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class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 18250</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: cultivation system</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18250</span> Dynamic Changes of Shifting Cultivation: Past, Present and Future Perspective of an Agroforestry System from Sri Lanka</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thavananthan%20Sivananthawerl">Thavananthan Sivananthawerl</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Shifting cultivation (Chena, Slash & Burn) is a cultivation method of raising, primarily, food crops (mainly annual) where an area of land is cleared off for its vegetation and cultivated for a period, and the abandoned (fallow) for its fertility to be naturally restored. Although this is the oldest (more than 5000 years) farming system, it is still practiced by indigenous communities of several countries such as Sri Lanka, India, Indonesia, Malaysia, Myanmar, West & Central Africa, and Amazon rainforest area. In Sri Lanka, shifting cultivation is mainly practiced during the North-East monsoon (called as Maha season, from Sept. to Dec.) with no irrigation. The traditional system allows farmers to cultivate for a short period of cultivation and a long period fallow period. This was facilitated mainly by the availability of land with less population. In addition, in the old system, cultivation practices were mostly related to religious and spiritual practices (Astrology, dynamic farming, etc.). At present, the majority of the shifting cultivators (SC’s) are cultivating in government lands, and most of them are adopting new technology (seeds, agrochemicals, machineries). Due to the local demand, almost 70% of the SC’s growing maize is mono-crop, and the rest with mixed-crop, such as groundnut, cowpea, millet, and vegetables. To ensure continuous cultivation and reduce moisture stress, they established ‘dug wells’ and used pumps to lift water from nearby sources. Due to this, the fallow period has been reduced drastically to 1- 2 years. To have the future prosperous of system, farmers should be educated so that they can understand the harmful effects of shifting cultivation and require new policies and a framework for converting the land use pattern towards high economic returns (new crop varieties, maintaining soil fertility, reducing soil erosion) while protecting the natural forests. The practice of agroforestry should be encouraged in which both the crops and the tall trees are cared for by farmers simultaneously. To facilitate the continuous cultivation, the system needs to develop water harvesting, water-conserving technologies, and scientific water management for the limited rainy season. Even though several options are available, all the solutions vary from region to region. Therefore, it is only the government and cultivators together who can find solutions to the problems of the specific areas. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=shifting%20cultivation" title="shifting cultivation">shifting cultivation</a>, <a href="https://publications.waset.org/abstracts/search?q=agroforestry" title=" agroforestry"> agroforestry</a>, <a href="https://publications.waset.org/abstracts/search?q=fallow" title=" fallow"> fallow</a>, <a href="https://publications.waset.org/abstracts/search?q=economic%20returns" title=" economic returns"> economic returns</a>, <a href="https://publications.waset.org/abstracts/search?q=government" title=" government"> government</a>, <a href="https://publications.waset.org/abstracts/search?q=Sri%20Lanka" title=" Sri Lanka"> Sri Lanka</a> </p> <a href="https://publications.waset.org/abstracts/155673/dynamic-changes-of-shifting-cultivation-past-present-and-future-perspective-of-an-agroforestry-system-from-sri-lanka" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/155673.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">100</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18249</span> Land Suitability Analysis for Rice Production in a Typical Watershed of Southwestern Nigeria: A Sustainability Pathway</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Oluwagbenga%20O.%20Isaac%20Orimoogunje">Oluwagbenga O. Isaac Orimoogunje</a>, <a href="https://publications.waset.org/abstracts/search?q=Omolola%20Helen%20Oshosanya"> Omolola Helen Oshosanya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study examined land management in a typical watershed in southwestern Nigeria with a view to ascertaining its impact on land suitability analysis for rice cultivation and production. The study applied the analytical hierarchy process (AHP), weighted overlay analysis (WOA), multi-criteria decision-making techniques, and suitability map calculations within a Geographic Information System environment. Five main criteria were used, and these include climate, topography, soil fertility, macronutrients, and micronutrients. A consistency ratio (CR) of 0.067 was obtained for rice cultivation. The results showed that 95% of the land area is suitable for rice cultivation, with pH units ranging between 4.6 and 6.0, organic matter of 1.4–2.5 g kg-1 and base saturation of more than 80%. The study concluded that the Ofiki watershed is a potential site for large-scale rice cultivation in a sustainable capacity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=land%20management" title="land management">land management</a>, <a href="https://publications.waset.org/abstracts/search?q=land%20characteristics" title=" land characteristics"> land characteristics</a>, <a href="https://publications.waset.org/abstracts/search?q=land%20suitability" title=" land suitability"> land suitability</a>, <a href="https://publications.waset.org/abstracts/search?q=rice%20production" title=" rice production"> rice production</a>, <a href="https://publications.waset.org/abstracts/search?q=watershed" title=" watershed"> watershed</a> </p> <a href="https://publications.waset.org/abstracts/171918/land-suitability-analysis-for-rice-production-in-a-typical-watershed-of-southwestern-nigeria-a-sustainability-pathway" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/171918.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">82</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18248</span> Mixotrophic Cultivation of Microalgae as a Feasible Strategy for Carotenoid Production</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jian%20Li">Jian Li</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Carotenoids area group of metabolites in mostly photosynthetic organisms such as plants and microalgae and have wide applications in cosmetics, food, feed, and health industries. Although phototrophic cultivation of microalgae has been developed to produce some carotenoids for decades, most carotenoids are currently synthesized chemically at industrial scales because of affordable production costs. Chemical carotenoids are regarded not as safe for human beings as natural carotenoids and are restricted only for animal feed markets, and the industries call for inexpensive sources of natural products. Microalgae grow much quicker in mixotrophy than in phototrophy, and thus mixotrophic cultivation processes have great potential to reduce the production cost of carotenoids from microalgae. However, much more expensive photobioreactor systems and more strictly controlled sterile processes are needed to avoid contamination by heterotrophic organisms during mixotrophic cultivation processes, which makes mixotrophy, in fact, much more expensive than phototrophic cultivation. Recently technical breakthroughs have been reported to overcome contamination problems in photobioreactor systems traditionally used for phototrophic cultivation, and a much lower process cost of mixotrophic cultivation than that of phototrophic cultivation might be achieved for carotenoid production. These reviews intend to summarize recent technical advancements in mixotrophic cultivation of microalgae, to evaluate the economic viability of carotenoid production from mixotrophically cultivated microalgae, and to prospect mixotrophy as a strategy to produce a variety of carotenoids for industrial applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microalgae" title="microalgae">microalgae</a>, <a href="https://publications.waset.org/abstracts/search?q=carotenoid" title=" carotenoid"> carotenoid</a>, <a href="https://publications.waset.org/abstracts/search?q=mixotrophy" title=" mixotrophy"> mixotrophy</a>, <a href="https://publications.waset.org/abstracts/search?q=biotechnology" title=" biotechnology"> biotechnology</a> </p> <a href="https://publications.waset.org/abstracts/147987/mixotrophic-cultivation-of-microalgae-as-a-feasible-strategy-for-carotenoid-production" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/147987.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">163</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18247</span> Mapping the Land Use Changes in Cultivation Areas of Maize and Soybean from 2006 to 2017 in North West and Free State Provinces, South Africa</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Ngcinela">S. Ngcinela</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Mushunje"> A. Mushunje</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Taruvinga"> A. Taruvinga</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20S.%20Mutengwa"> C. S. Mutengwa</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20S.%20Masehela"> T. S. Masehela</a> </p> <p class="card-text"><strong>Abstract:</strong></p> There is high demand and competing needs when it comes to land use practices. Several factors contribute to this trend, for example, the ever-increasing human population, the need to produce more food than before, and the expansion of industrial and agricultural areas. This paper, focused on the cultivation patterns, land use change over time, of maize and soybean (i.e. both genetically modified and non-genetically modified) in two South African provinces to establish their land cover changes over time. From a global context, genetically modified crops have been advocated by some to be saving land – due to more yield over small cultivation area(s); while other argue and even criticise their cultivation as they take up more land, replace other crops or are the expense of natural (pristine) vegetation. The study quantified and mapped land used for the cultivation of maize and soybean from 2006 to 2017 in Free State and North West provinces, using ArcGIS. The results show both provinces to have minimal expansion or change in cultivation area for both maize and soybean between 2006 and 2017. The results further indicate that both maize and soybean cultivation areas in these provinces, did not expand beyond the current agricultural areas (space), and did not encroach onto new land areas. This suggests that both maize and soybean, do not currently pose a threat to the surrounding landscape and are not in direct coemption with other neighboring land use practices. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=agriculture" title="agriculture">agriculture</a>, <a href="https://publications.waset.org/abstracts/search?q=crops" title=" crops"> crops</a>, <a href="https://publications.waset.org/abstracts/search?q=cultivation" title=" cultivation"> cultivation</a>, <a href="https://publications.waset.org/abstracts/search?q=genetically%20modified" title=" genetically modified"> genetically modified</a>, <a href="https://publications.waset.org/abstracts/search?q=land%20use" title=" land use"> land use</a>, <a href="https://publications.waset.org/abstracts/search?q=maize" title=" maize"> maize</a>, <a href="https://publications.waset.org/abstracts/search?q=soybean" title=" soybean"> soybean</a> </p> <a href="https://publications.waset.org/abstracts/158126/mapping-the-land-use-changes-in-cultivation-areas-of-maize-and-soybean-from-2006-to-2017-in-north-west-and-free-state-provinces-south-africa" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/158126.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">180</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18246</span> Monitoring of Cannabis Cultivation with High-Resolution Images</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Levent%20Basayigit">Levent Basayigit</a>, <a href="https://publications.waset.org/abstracts/search?q=Sinan%20Demir"> Sinan Demir</a>, <a href="https://publications.waset.org/abstracts/search?q=Burhan%20Kara"> Burhan Kara</a>, <a href="https://publications.waset.org/abstracts/search?q=Yusuf%20Ucar">Yusuf Ucar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cannabis is mostly used for drug production. In some countries, an excessive amount of illegal cannabis is cultivated and sold. Most of the illegal cannabis cultivation occurs on the lands far from settlements. In farmlands, it is cultivated with other crops. In this method, cannabis is surrounded by tall plants like corn and sunflower. It is also cultivated with tall crops as the mixed culture. The common method of the determination of the illegal cultivation areas is to investigate the information obtained from people. This method is not sufficient for the determination of illegal cultivation in remote areas. For this reason, more effective methods are needed for the determination of illegal cultivation. Remote Sensing is one of the most important technologies to monitor the plant growth on the land. The aim of this study is to monitor cannabis cultivation area using satellite imagery. The main purpose of this study was to develop an applicable method for monitoring the cannabis cultivation. For this purpose, cannabis was grown as single or surrounded by the corn and sunflower in plots. The morphological characteristics of cannabis were recorded two times per month during the vegetation period. The spectral signature library was created with the spectroradiometer. The parcels were monitored with high-resolution satellite imagery. With the processing of satellite imagery, the cultivation areas of cannabis were classified. To separate the Cannabis plots from the other plants, the multiresolution segmentation algorithm was found to be the most successful for classification. WorldView Improved Vegetative Index (WV-VI) classification was the most accurate method for monitoring the plant density. As a result, an object-based classification method and vegetation indices were sufficient for monitoring the cannabis cultivation in multi-temporal Earthwiev images. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Cannabis" title="Cannabis">Cannabis</a>, <a href="https://publications.waset.org/abstracts/search?q=drug" title=" drug"> drug</a>, <a href="https://publications.waset.org/abstracts/search?q=remote%20sensing" title=" remote sensing"> remote sensing</a>, <a href="https://publications.waset.org/abstracts/search?q=object-based%20classification" title=" object-based classification"> object-based classification</a> </p> <a href="https://publications.waset.org/abstracts/74202/monitoring-of-cannabis-cultivation-with-high-resolution-images" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74202.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">276</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18245</span> Cultivation of a Blue Marine Sponge (Xestospongia SP.) for Pharmaceutical Proposed by Inland Technique</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kietisak%20Yokseng">Kietisak Yokseng</a>, <a href="https://publications.waset.org/abstracts/search?q=Rachow%20Khaochumnan"> Rachow Khaochumnan</a>, <a href="https://publications.waset.org/abstracts/search?q=Patchara%20Pedpradab"> Patchara Pedpradab</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Sponges are biological filtration organisms in the marine environment and are a rich source of bioactive compounds. Inland cultivation presents an alternative method for growing sponges for pharmaceutical purposes. A blue marine sponge (Xestospongia sp.) was collected by hand from Sarai Island, Thailand. The sponge samples were rehabilitated in natural seawater within a 90 m³ cement pond for one month. The system maintained a water flow rate of 180 m/second and salinity levels between 28-30 ppt. After an incubation period, the experimented sponge explants were prepared at the initial size of 1×2 cm and weighed before being attached to the plastic net. The samples were then transferred to the aquarium under a semi-close circulating system operation. Sponges fed with Chaetoceros gracilis. The cultural container material is made of glass, plastic, and polymeric form. Results revealed that the highest sponge growth (1.21 g) was observed in a cultural tank made from glass, while the lowest growth (0.66 g) was recorded in plastic containers. However, the growth differences between container materials were not statistically significant. The results demonstrated that a semi-closed circulating system is suitable for inland sponge cultivation, with optimal growth achieved using glass containers feeding with diatom C. gracilis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=xestospongia%20sp" title="xestospongia sp">xestospongia sp</a>, <a href="https://publications.waset.org/abstracts/search?q=culture" title=" culture"> culture</a>, <a href="https://publications.waset.org/abstracts/search?q=development" title=" development"> development</a>, <a href="https://publications.waset.org/abstracts/search?q=marine%20sponge" title=" marine sponge"> marine sponge</a> </p> <a href="https://publications.waset.org/abstracts/198492/cultivation-of-a-blue-marine-sponge-xestospongia-sp-for-pharmaceutical-proposed-by-inland-technique" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/198492.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">3</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18244</span> Assessment of Al/Fe Humus, pH, and P Retention to Differentiate Andisols under Different Cultivation, Karanganyar, Central Java, Indonesia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Miseri%20Roeslan%20Afany">Miseri Roeslan Afany</a>, <a href="https://publications.waset.org/abstracts/search?q=Nur%20Ainun%20Pulungan"> Nur Ainun Pulungan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The unique characteristics of Andisol differentiate them from other soils. These characteristics become a guideline in determining management and usage with regards to agriculture. Especially in the tropical area, Andisols may have fast mineral alteration due to intensive water movement in the soils. Four soil chemical tests were conducted for evaluating soils in the study area. Al/Fe humus, allophane, pH, and P retention were used to differentiate Andisols under different practices. Non-cultivation practice (e.g. natural forest) and cultivation practices (e.g. horticulture systems and intensive farming systems) are compared in this study. We applied Blackmore method for P retention analysis. The aims of this study are: (i) to analyze the specific behavior of Al/Fe humus, pH, and allophane towards P retention in order (ii) to evaluate the effect of cultivation practices on their behavior changes among Andisols, and (iii) to gain the sustainable agriculture through proposing an appropriate soil managements in the study area. 5 observation sites were selected, and 75 soil sampling were analyzed in this study. The results show that the cultivation decreases P retention in all sampling sites. There is a declining from ±90% to ±50% of P retention in the natural forest where shifts into cultivated land. The average of P retention under 15 years of cultivation down into 63%, whereas, the average of P retention more than 15 years of cultivation down into 54%. Many factors affect the retention of P in the soil such as: (1) type and amount of clay, (2) allophone and/or imogolit, (3) Al/Fe humus, (4) soil pH, (5) type and amount of organic material, (6) Exchangeable bases (Ca, Mg, Na, K), (7) forms and solubility of Al/Fe. To achieve the sustainable agriculture in the study area, conventional agriculture practices should be preserved and intensive fertilizing practices should be applied in order to increase the soil pH, to maintain the organic matter of andisols, to maintain microba activities, and to release Al/Fe humus complex, and thus increase available P in the soils. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Andisols" title="Andisols">Andisols</a>, <a href="https://publications.waset.org/abstracts/search?q=cultivation" title=" cultivation"> cultivation</a>, <a href="https://publications.waset.org/abstracts/search?q=P%20retention" title=" P retention"> P retention</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20agriculture" title=" sustainable agriculture"> sustainable agriculture</a> </p> <a href="https://publications.waset.org/abstracts/61531/assessment-of-alfe-humus-ph-and-p-retention-to-differentiate-andisols-under-different-cultivation-karanganyar-central-java-indonesia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/61531.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">284</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18243</span> Investigation of Clubroot Disease Occurrence under Chemical and Organic Soil Environment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zakirul%20Islam">Zakirul Islam</a>, <a href="https://publications.waset.org/abstracts/search?q=Yugo%20Kumokawa"> Yugo Kumokawa</a>, <a href="https://publications.waset.org/abstracts/search?q=Quoc%20Thinh%20Tran"> Quoc Thinh Tran</a>, <a href="https://publications.waset.org/abstracts/search?q=Motoki%20Kubo"> Motoki Kubo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Clubroot is a disease of cruciferous plant caused by soil born pathogen Plasmodiophora brassicae and can significantly limit the production through rapid spreading. The present study was designed to investigate the effect of cultivation practices (chemical and organic soils) on clubroot disease development in Brassica rapa. Disease index and root bacterial composition were investigated for both chemical and organic soils. The bacterial biomass and diversity in organic soil were higher than those in chemical soil. Disease severity was distinct for two different cultivation methods. The number of endophytic bacteria decreased in the infected root for both soils. The increased number of endophytic bacterial number led to reduce the proliferation of pathogen spore inside the root and thus reduced the disease severity in organic plants. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=clubroot%20disease" title="clubroot disease">clubroot disease</a>, <a href="https://publications.waset.org/abstracts/search?q=bacterial%20biomass" title=" bacterial biomass"> bacterial biomass</a>, <a href="https://publications.waset.org/abstracts/search?q=root%20infection" title=" root infection"> root infection</a>, <a href="https://publications.waset.org/abstracts/search?q=disease%20index" title=" disease index"> disease index</a>, <a href="https://publications.waset.org/abstracts/search?q=chemical%20cultivation" title=" chemical cultivation"> chemical cultivation</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20cultivation" title=" organic cultivation"> organic cultivation</a> </p> <a href="https://publications.waset.org/abstracts/169607/investigation-of-clubroot-disease-occurrence-under-chemical-and-organic-soil-environment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169607.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">90</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18242</span> A Comparative Study of Modern Trends in Traditional Farming Methods of Paddy Cultivation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Prasansha%20Kumari">Prasansha Kumari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research intends to identify and analyze the new trends of usage the traditional farming methods to modern paddy cultivation. Information gathered through conducting interviews with total of 200 farmers in selected paddy cultivation areas in Kurunegalla district. As well as this research utilized by case study and observation in Ulpotha Traditional Village, Galgamuwa of Sri Lanka. Secondary data collected from books, articles, relevant websites and other relevant documents. Collected data analyzed by descriptive research methodology. Outcomes are there is growing interest in usage the traditional farming methods to the small consumption level paddy lands that have emerged during the last few decades as well as the research revealed that traditional farming method has identified the ecofriendly farming practices to restrict long term side effects inherited from the modern methods. The study finds out the demand of traditional rice varieties has been growing among the community as health and nutrition purpose. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=traditional%20farming" title="traditional farming">traditional farming</a>, <a href="https://publications.waset.org/abstracts/search?q=organic" title=" organic"> organic</a>, <a href="https://publications.waset.org/abstracts/search?q=inorganic" title=" inorganic"> inorganic</a>, <a href="https://publications.waset.org/abstracts/search?q=paddy%20cultivation" title=" paddy cultivation"> paddy cultivation</a> </p> <a href="https://publications.waset.org/abstracts/51822/a-comparative-study-of-modern-trends-in-traditional-farming-methods-of-paddy-cultivation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51822.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">293</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18241</span> Assessment of Soil Quality Indicators in Rice Soils Under Rainfed Ecosystem</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20Kaleeswari">R. Kaleeswari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An investigation was carried out to assess the soil biological quality parameters in rice soils under rainfed and to compare soil quality indexing methods viz., Principal component analysis, Minimum data set and Indicator scoring method and to develop soil quality indices for formulating soil and crop management strategies.Soil samples were collected and analyzed for soil biological properties by adopting standard procedure. Biological indicators were determined for soil quality assessment, viz., microbial biomass carbon and nitrogen (MBC and MBN), potentially mineralizable nitrogen (PMN) and soil respiration and dehydrogenease activity. Among the methods of rice cultivation, Organic nutrition, Integrated Nutrient Management (INM) and System of Rice Intensification (SRI ), rice cultivation registered higher values of MBC, MBN and PMN. Mechanical and conventional rice cultivation registered lower values of biological quality indicators. Organic nutrient management and INM enhanced the soil respiration rate. SRI and aerobic rice cultivation methods increased the rate of soil respiration, while conventional and mechanical rice farming lowered the soil respiration rate. Dehydrogenase activity (DHA) was registered to be higher in soils under organic nutrition and Integrated Nutrient Management INM. System of Rice Intensification SRI and aerobic rice cultivation enhanced the DHA; while conventional and mechanical rice cultivation methods reduced DHA. The microbial biomass carbon (MBC) of the rice soils varied from 65 to 244 mg kg-1. Among the nutrient management practices, INM registered the highest available microbial biomass carbon of 285 mg kg-1.Potentially mineralizable N content of the rice soils varied from 20.3 to 56.8 mg kg-1. Aerobic rice farming registered the highest potentially mineralizable N of 78.9 mg kg-1..The soil respiration rate of the rice soils varied from 60 to 125 µgCO2 g-1. Nutrient management practices ofINM practice registered the highest. soil respiration rate of 129 µgCO2 g-1.The dehydrogenase activity of the rice soils varied from 38.3 to 135.3µgTPFg-1 day-1. SRI method of rice cultivation registered the highest dehydrogenase activity of 160.2 µgTPFg-1 day-1. Soil variables from each PC were considered for minimum soil data set (MDS). Principal component analysis (PCA) was used to select the representative soil quality indicators. In intensive rice cultivating regions, soil quality indicators were selected based on factor loading value and contribution percentage value using principal component analysis (PCA).Variables having significant difference within production systems were used for the preparation of minimum data set (MDS). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=soil%20quality" title="soil quality">soil quality</a>, <a href="https://publications.waset.org/abstracts/search?q=rice" title=" rice"> rice</a>, <a href="https://publications.waset.org/abstracts/search?q=biological%20properties" title=" biological properties"> biological properties</a>, <a href="https://publications.waset.org/abstracts/search?q=PCA%20analysis" title=" PCA analysis"> PCA analysis</a> </p> <a href="https://publications.waset.org/abstracts/170132/assessment-of-soil-quality-indicators-in-rice-soils-under-rainfed-ecosystem" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/170132.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">118</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18240</span> Using Optimal Cultivation Strategies for Enhanced Biomass and Lipid Production of an Indigenous Thraustochytrium sp. BM2</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hsin-Yueh%20Chang">Hsin-Yueh Chang</a>, <a href="https://publications.waset.org/abstracts/search?q=Pin-Chen%20Liao"> Pin-Chen Liao</a>, <a href="https://publications.waset.org/abstracts/search?q=Jo-Shu%20Chang"> Jo-Shu Chang</a>, <a href="https://publications.waset.org/abstracts/search?q=Chun-Yen%20Chen"> Chun-Yen Chen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Biofuel has drawn much attention as a potential substitute to fossil fuels. However, biodiesel from waste oil, oil crops or other oil sources can only satisfy partial existing demands for transportation. Due to the feature of being clean, green and viable for mass production, using microalgae as a feedstock for biodiesel is regarded as a possible solution for a low-carbon and sustainable society. In particular, Thraustochytrium sp. BM2, an indigenous heterotrophic microalga, possesses the potential for metabolizing glycerol to produce lipids. Hence, it is being considered as a promising microalgae-based oil source for biodiesel production and other applications. This study was to optimize the culture pH, scale up, assess the feasibility of producing microalgal lipid from crude glycerol and apply operation strategies following optimal results from shake flask system in a 5L stirred-tank fermenter for further enhancing lipid productivities. Cultivation of Thraustochytrium sp. BM2 without pH control resulted in the highest lipid production of 3944 mg/L and biomass production of 4.85 g/L. Next, when initial glycerol and corn steep liquor (CSL) concentration increased five times (50 g and 62.5 g, respectively), the overall lipid productivity could reach 124 mg/L/h. However, when using crude glycerol as a sole carbon source, direct addition of crude glycerol could inhibit culture growth. Therefore, acid and metal salt pretreatment methods were utilized to purify the crude glycerol. Crude glycerol pretreated with acid and CaCl₂ had the greatest overall lipid productivity 131 mg/L/h when used as a carbon source and proved to be a better substitute for pure glycerol as carbon source in Thraustochytrium sp. BM2 cultivation medium. Engineering operation strategies such as fed-batch and semi-batch operation were applied in the cultivation of Thraustochytrium sp. BM2 for the improvement of lipid production. In cultivation of fed-batch operation strategy, harvested biomass 132.60 g and lipid 69.15 g were obtained. Also, lipid yield 0.20 g/g glycerol was same as in batch cultivation, although with poor overall lipid productivity 107 mg/L/h. In cultivation of semi-batch operation strategy, overall lipid productivity could reach 158 mg/L/h due to the shorter cultivation time. Harvested biomass and lipid achieved 232.62 g and 126.61 g respectively. Lipid yield was improved from 0.20 to 0.24 g/g glycerol. Besides, product costs of three kinds of operation strategies were also calculated. The lowest product cost 12.42 $NTD/g lipid was obtained while employing semi-batch operation strategy and reduced 33% in comparison with batch operation strategy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heterotrophic%20microalga%20Thrasutochytrium%20sp.%20BM2" title="heterotrophic microalga Thrasutochytrium sp. BM2">heterotrophic microalga Thrasutochytrium sp. BM2</a>, <a href="https://publications.waset.org/abstracts/search?q=microalgal%20lipid" title=" microalgal lipid"> microalgal lipid</a>, <a href="https://publications.waset.org/abstracts/search?q=crude%20glycerol" title=" crude glycerol"> crude glycerol</a>, <a href="https://publications.waset.org/abstracts/search?q=fermentation%20strategy" title=" fermentation strategy"> fermentation strategy</a>, <a href="https://publications.waset.org/abstracts/search?q=biodiesel" title=" biodiesel"> biodiesel</a> </p> <a href="https://publications.waset.org/abstracts/107365/using-optimal-cultivation-strategies-for-enhanced-biomass-and-lipid-production-of-an-indigenous-thraustochytrium-sp-bm2" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/107365.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">155</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18239</span> The Study on Enhanced Micro Climate of the Oyster Mushroom Cultivation House with Multi-Layered Shelves by Using Computational Fluid Dynamics Analysis in Winter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sunghyoun%20Lee">Sunghyoun Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Byeongkee%20Yu"> Byeongkee Yu</a>, <a href="https://publications.waset.org/abstracts/search?q=Chanjung%20Lee"> Chanjung Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Yeongtaek%20Lim"> Yeongtaek Lim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Oyster mushrooms are one of the ingredients that Koreans prefer. The oyster mushroom cultivation house has multiple layers in order to increase the mushroom production per unit area. However, the growing shelves in the house act as obstacles and hinder the circulation of the interior air, which leads to the difference of cultivation environment between the upper part and lower part of the growing shelves. Due to this difference of environments, growth distinction occurs according to the area of the growing shelves. It is known that minute air circulation around the mushroom cap facilitates the metabolism of mushrooms and improves its quality. This study has utilized the computational fluid dynamics (CFD) program, that is, FLUENT R16, in order to analyze the improvement of the internal environment uniformity of the oyster mushroom cultivation house. The analyzed factors are velocity distribution, temperature distribution, and humidity distribution. In order to maintain the internal environment uniformity of the oyster mushroom cultivation house, it appeared that installing circulation fan at the upper part of the working passage towards the ceiling is effective. When all the environmental control equipment – unit cooler, inlet fan, outlet fan, air circulation fan, and humidifier - operated simultaneously, the RMS figure on the growing shelves appeared as follows: velocity 28.23%, temperature 30.47%, humidity 7.88%. However, when only unit cooler and air circulation fan operated, the RMS figure on the growing shelves appeared as follows: velocity 22.28%, temperature 0.87%, humidity 0.82%. Therefore, in order to maintain the internal environment uniformity of the mushroom cultivation house, reducing the overall operating time of inlet fan, outlet fan, and humidifier is needed, and managing the internal environment with unit cooler and air circulation fan appropriately is essential. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=air%20circulation%20fan" title="air circulation fan">air circulation fan</a>, <a href="https://publications.waset.org/abstracts/search?q=computational%20fluid%20dynamics" title=" computational fluid dynamics"> computational fluid dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-layered%20shelves%20cultivation" title=" multi-layered shelves cultivation"> multi-layered shelves cultivation</a>, <a href="https://publications.waset.org/abstracts/search?q=oyster%20mushroom%20cultivation%20house" title=" oyster mushroom cultivation house"> oyster mushroom cultivation house</a> </p> <a href="https://publications.waset.org/abstracts/86845/the-study-on-enhanced-micro-climate-of-the-oyster-mushroom-cultivation-house-with-multi-layered-shelves-by-using-computational-fluid-dynamics-analysis-in-winter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86845.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">211</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18238</span> Domestic Wastewater Treatment by Microalgae – Removal of Nitrogen </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Siham%20Dehmani">A. Siham Dehmani</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Djamal%20Zerrouki"> B. Djamal Zerrouki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Domestic wastewater contains high concentrations of nitrogen, which can affect public health and cause harmful ecological impacts. The potential of microalgae as a source of renewable energy based on wastewater has received increasing interest worldwide in recent decades. The microalgae cultivation in wastewater has two advantages: wastewater treatment and algal biomass production. Our work aimed to remove nitrogen from municipal wastewater. Wastewater samples were taken from the wastewater treatment station located in Ouargla and used as a medium for the cultivation of chlorella microalgae strains inside a photobioreactor. Analysis of different parameters was done every 2 days along the period of the cultivation (10 days). The average removal efficiencies of nitrogen were maintained at 95%. Our results show the potential of integrating nutrient removal from wastewater by microalgae as a secondary wastewater treatment processes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomass" title="biomass">biomass</a>, <a href="https://publications.waset.org/abstracts/search?q=microalgae" title=" microalgae"> microalgae</a>, <a href="https://publications.waset.org/abstracts/search?q=treatment" title=" treatment"> treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=wastewater" title=" wastewater"> wastewater</a> </p> <a href="https://publications.waset.org/abstracts/40854/domestic-wastewater-treatment-by-microalgae-removal-of-nitrogen" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40854.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">434</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18237</span> Climate Change Impacts on Future Wheat Growing Areas</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rasha%20Aljaryian">Rasha Aljaryian</a>, <a href="https://publications.waset.org/abstracts/search?q=Lalit%20Kumar"> Lalit Kumar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Climate is undergoing continuous change and this trend will affect the cultivation areas ofmost crops, including wheat (Triticum aestivum L.), in the future. The current suitable cultivation areas may become unsuitable climatically. Countries that depend on wheat cultivation and export may suffer an economic loss because of production decline. On the other hand, some regions of the world could gain economically by increasing cultivation areas. This study models the potential future climatic suitability of wheat by using CLIMEX software. Two different global climate models (GCMs) were used, CSIRO-Mk3.0 (CS) and MIROC-H (MR), with two emission scenarios (A2, A1B). The results of this research indicate that the suitable climatic areas for wheat in the southern hemisphere, such as Australia, are expected to contract by the end of this century. However, some unsuitable or marginal areas will become climatically suitable under future climate scenarios. In North America and Europe further expansion inland could occur. Also, the results illustrate that heat and dry stresses as abiotic climatic factors will play an important role in wheat distribution in the future. Providing sufficient information about future wheat distribution will be useful for agricultural ministries and organizations to manage the shift in production areas in the future. They can minimize the expected harmful economic consequences by preparing strategic plans and identifying new areas for wheat cultivation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Climate%20change" title="Climate change">Climate change</a>, <a href="https://publications.waset.org/abstracts/search?q=Climate%20modelling" title=" Climate modelling"> Climate modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=CLIMEX" title=" CLIMEX"> CLIMEX</a>, <a href="https://publications.waset.org/abstracts/search?q=Triticum%20aestivum" title=" Triticum aestivum"> Triticum aestivum</a>, <a href="https://publications.waset.org/abstracts/search?q=Wheat" title=" Wheat"> Wheat</a> </p> <a href="https://publications.waset.org/abstracts/56514/climate-change-impacts-on-future-wheat-growing-areas" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56514.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">258</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18236</span> Quantitative Research on the Effects of Following Brands on Twitter on Consumer Brand Attitude</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yujie%20Wei">Yujie Wei</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Twitter uses a variety of narrative methods (e.g., messages, featured videos, music, and actual events) to strengthen its cultivation effect. Consumers are receiving mass-produced brand stores or images made by brand managers according to strict market specifications. Drawing on the cultivation theory, this quantitative research investigates how following a brand on Twitter for 12 weeks can cultivate their attitude toward the brand and influence their purchase intentions. We conducted three field experiments on Twitter to test the cultivation effects of following a brand for 12 weeks on consumer attitude toward the followed brand. The cultivation effects were measured by comparing the changes in consumer attitudes before and after they have followed a brand over time. The findings of our experiments suggest that when consumers are exposed to a brand’s stable, pervasive, and recurrent tweets on Twitter for 12 weeks, their attitude toward a brand can be significantly changed, which confirms the cultivating effects on consumer attitude. Also, the results indicate that branding activities on Twitter, when properly implemented, can be very effective in changing consumer attitudes toward a brand, increasing the purchase intentions, and increasing their willingness to spread the word-of-mouth for the brand on social media. The cultivation effects are moderated by brand type and consumer age. The research provides three major marketing implications. First, Twitter marketers should create unique content to engage their brand followers to change their brand attitude through steady, cumulative exposure to the branding activities on Twitter. Second, there is a significant moderating effect of brand type on the cultivation effects, so Twitter marketers should align their branding content with the brand type to better meet the needs and wants of consumers for different types of brands. Finally, Twitter marketers should adapt their tweeting strategies according to the media consumption preferences of different age groups of their target markets. This empirical research proves that content is king. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tweeting" title="tweeting">tweeting</a>, <a href="https://publications.waset.org/abstracts/search?q=cultivation%20theory" title=" cultivation theory"> cultivation theory</a>, <a href="https://publications.waset.org/abstracts/search?q=consumer%20brand%20attitude" title=" consumer brand attitude"> consumer brand attitude</a>, <a href="https://publications.waset.org/abstracts/search?q=purchase%20intentions" title=" purchase intentions"> purchase intentions</a>, <a href="https://publications.waset.org/abstracts/search?q=word-of-mouth" title=" word-of-mouth"> word-of-mouth</a> </p> <a href="https://publications.waset.org/abstracts/118469/quantitative-research-on-the-effects-of-following-brands-on-twitter-on-consumer-brand-attitude" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/118469.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">115</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18235</span> Evaluation of Commercial Herbicides for Weed Control and Yield under Direct Dry Seeded Rice Cultivation System in Pakistan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sanaullah%20Jalil">Sanaullah Jalil</a>, <a href="https://publications.waset.org/abstracts/search?q=Abid%20Majeed"> Abid Majeed</a>, <a href="https://publications.waset.org/abstracts/search?q=Syed%20Haider%20Abbas"> Syed Haider Abbas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Direct dry seeded rice cultivation system is an emerging production technology in Pakistan. Weeds are a major constraint to the success of direct dry seeded rice (DDSR). Studies were carried out for two years during 2015 and 2016 to evaluate the performance of applications of pre-emergence herbicides (Top Max @ 2.25 lit/ha, Click @1.5 lit/ha and Pendimethaline @ 1.25 lit/ha) and post-emergence herbicides (Clover @ 200 g/ha, Pyranex Gold @ 250 g/ha, Basagran @ 2.50 lit/ha, Sunstar Gold @ 50 g/ha and Wardan @ 1.25 lit/ha) at rice research field area of National Agriculture Research Center (NARC), Islamabad. The experiments were laid out in Randomized Complete Block Design (RCBD) with three replications. All evaluated herbicides reduced weed density and biomass by a significant amount. The net plot size was 2.5 x 5 m with 10 rows. Basmati-385 was used as test variety of rice. Data indicated that Top Max and Click provided best weed control efficiency but suppressed the germination of rice seed which causes the lowest grain yield production (680.6 kg/ha and 314.5 kg/ha respectively). A weedy check plot contributed 524.7 kg/ha paddy yield with highest weed density. Pyranex Gold provided better weed control efficiency and contributed to significantly higher paddy yield 5116.6 kg/ha than that of all other herbicide applications followed by the Clover which give paddy yield 4241.7 kg/ha. The results of our study suggest that pre-emergence herbicides provided best weed control but not fit for direct dry seeded rice (DDSR) cultivation system, and therefore post-emergence herbicides (Pyranex Gold and Clover) can be suggested for weed control and higher yield. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pyranex%20gold" title="pyranex gold">pyranex gold</a>, <a href="https://publications.waset.org/abstracts/search?q=clover" title=" clover"> clover</a>, <a href="https://publications.waset.org/abstracts/search?q=direct%20dry%20seeded%20rice%20%28DDSR%29" title=" direct dry seeded rice (DDSR)"> direct dry seeded rice (DDSR)</a>, <a href="https://publications.waset.org/abstracts/search?q=yield" title=" yield"> yield</a> </p> <a href="https://publications.waset.org/abstracts/94994/evaluation-of-commercial-herbicides-for-weed-control-and-yield-under-direct-dry-seeded-rice-cultivation-system-in-pakistan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/94994.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">272</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18234</span> Cybernetic Model-Based Optimization of a Fed-Batch Process for High Cell Density Cultivation of E. Coli In Shake Flasks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Snehal%20D.%20Ganjave">Snehal D. Ganjave</a>, <a href="https://publications.waset.org/abstracts/search?q=Hardik%20Dodia"> Hardik Dodia</a>, <a href="https://publications.waset.org/abstracts/search?q=Avinash%20V.%20Sunder"> Avinash V. Sunder</a>, <a href="https://publications.waset.org/abstracts/search?q=Swati%20Madhu"> Swati Madhu</a>, <a href="https://publications.waset.org/abstracts/search?q=Pramod%20P.%20Wangikar"> Pramod P. Wangikar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Batch cultivation of recombinant bacteria in shake flasks results in low cell density due to nutrient depletion. Previous protocols on high cell density cultivation in shake flasks have relied mainly on controlled release mechanisms and extended cultivation protocols. In the present work, we report an optimized fed-batch process for high cell density cultivation of recombinant E. coli BL21(DE3) for protein production. A cybernetic model-based, multi-objective optimization strategy was implemented to obtain the optimum operating variables to achieve maximum biomass and minimized substrate feed rate. A syringe pump was used to feed a mixture of glycerol and yeast extract into the shake flask. Preliminary experiments were conducted with online monitoring of dissolved oxygen (DO) and offline measurements of biomass and glycerol to estimate the model parameters. Multi-objective optimization was performed to obtain the pareto front surface. The selected optimized recipe was tested for a range of proteins that show different extent soluble expression in E. coli. These included eYFP and LkADH, which are largely expressed in soluble fractions, CbFDH and GcanADH , which are partially soluble, and human PDGF, which forms inclusion bodies. The biomass concentrations achieved in 24 h were in the range 19.9-21.5 g/L, while the model predicted value was 19.44 g/L. The process was successfully reproduced in a standard laboratory shake flask without online monitoring of DO and pH. The optimized fed-batch process showed significant improvement in both the biomass and protein production of the tested recombinant proteins compared to batch cultivation. The proposed process will have significant implications in the routine cultivation of E. coli for various applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cybernetic%20model" title="cybernetic model">cybernetic model</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20coli" title=" E. coli"> E. coli</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20cell%20density%20cultivation" title=" high cell density cultivation"> high cell density cultivation</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-objective%20optimization" title=" multi-objective optimization"> multi-objective optimization</a> </p> <a href="https://publications.waset.org/abstracts/141517/cybernetic-model-based-optimization-of-a-fed-batch-process-for-high-cell-density-cultivation-of-e-coli-in-shake-flasks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/141517.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">268</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18233</span> Strengthening National Salt Industry through Cultivation Upgrading and Product Diversification</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Etty%20Soesilowati">Etty Soesilowati</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research was intended to: (1) designing production systems that produce high quality salt and (2) diversification of salt products. This research used qualitative and quantitative approaches which Garam Mas Ltd. as the research site. The data were analyzed interactively and subjected to laboratory tests. The analyses showed that salt production system using HDPE geomembranes produced whiter and cleaner salts than those produced by conventional methods without HDPE geomembranes. High quality consumption salt contained 97% NaCl and a maximum of 0.05% water, in the form of white minute crystals and usually used for table salt of food and snack seasoning, souses and cheese and vegetable oil industries. Medium grade salt contained 94.7%-97% NaCl and 3%-7% water and usually used for kitchen salt, soy sauce, tofu industries and cattle feeding. Low quality salt contained 90%-94.7% NaCl and 5%-10% water, with dull white color and usually used for fish preservation and agriculture. The quality and quantity of salts production were influenced by temperatures, weather, water concentrations used during production processes and the discipline of salt farmers itself. The use of water temperature less than 23 °Be during the production processes produced low quality salts. Optimizing cultivation of the production process from raw material to end product (consumption salt) should be attempted to produce quality salt that fulfills the Indonesian National Standard. Therefore, the integrated policies among stakeholders are really needed to build strong institutional base at salt farmer level. This might be achieved through the establishment of specific region for salt production. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cultivation%20system" title="cultivation system">cultivation system</a>, <a href="https://publications.waset.org/abstracts/search?q=diversification" title=" diversification"> diversification</a>, <a href="https://publications.waset.org/abstracts/search?q=salt%20products" title=" salt products"> salt products</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20quality%20salt" title=" high quality salt"> high quality salt</a> </p> <a href="https://publications.waset.org/abstracts/8095/strengthening-national-salt-industry-through-cultivation-upgrading-and-product-diversification" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8095.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">408</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18232</span> Design of a Simple Smart Greenhouse for Optimized Pak choi Cultivation in Rural Tropical Areas</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dedie%20Tooy">Dedie Tooy</a>, <a href="https://publications.waset.org/abstracts/search?q=Rio%20Kolibu"> Rio Kolibu</a>, <a href="https://publications.waset.org/abstracts/search?q=Rio%20Putra"> Rio Putra</a>, <a href="https://publications.waset.org/abstracts/search?q=Herry%20Frits%20Pinatik"> Herry Frits Pinatik</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20P.%20M.%20Ludong"> Daniel P. M. Ludong</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study presents the design and development of a smart greenhouse prototype tailored to optimize Pak choi (Brassica chinensis L.) cultivation in tropical rural climates. Pak choi, a high-demand leafy vegetable in Indonesia, often experiences suboptimal growth due to elevated temperatures and humidity. The objective of this research is to design and develop an intelligent greenhouse to optimize pak choi cultivation in tropical rural climates. The design of a smart greenhouse provides a controlled environment to stabilize these conditions, but managing fluctuating temperature, humidity, and light in tropical regions remains challenging. This system regulates critical environmental factors, including temperature, humidity, irrigation system, and light, creating optimal conditions for Pak Choi. The prototype's effectiveness was evaluated by monitoring growth indicators such as leaf weight, freshness, and moisture content, alongside the consistency of the internal climate compared to external conditions. Results indicate that the smart greenhouse supports superior crop growth, enhances yield quality, and reduces environmental resource consumption. The irrigation control system test was carried out for 40 days. Researchers observed the results of the automatic system working according to the sensor value readings. The results of the temperature control system test work: when the air temperature in the greenhouse is more than 33 degrees, the condensation pump will turn on, and when the temperature is below 32 degrees, the pump will automatically turn itself off. The cycle repeats continuously. The results achieved pak coy can live up to 40 days. As part of our ongoing research, we are actively considering integrating double-layered roofs to improve insulation and reduce external temperature fluctuations, which could further enhance the effectiveness of the smart greenhouse. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=smart%20greenhouse" title="smart greenhouse">smart greenhouse</a>, <a href="https://publications.waset.org/abstracts/search?q=horticulture" title=" horticulture"> horticulture</a>, <a href="https://publications.waset.org/abstracts/search?q=rural%20tropical%20climate" title=" rural tropical climate"> rural tropical climate</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20agriculture" title=" sustainable agriculture"> sustainable agriculture</a> </p> <a href="https://publications.waset.org/abstracts/195110/design-of-a-simple-smart-greenhouse-for-optimized-pak-choi-cultivation-in-rural-tropical-areas" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/195110.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">21</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18231</span> Agronomic Manipulation in Cultivation Practices of Scented Rice: For Sustainable Crop Production</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Damini%20Thawait">Damini Thawait</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20K.%20Dwivedi"> S. K. Dwivedi</a>, <a href="https://publications.waset.org/abstracts/search?q=Amit%20K.%20Patel"> Amit K. Patel</a>, <a href="https://publications.waset.org/abstracts/search?q=Samaptika%20Kar"> Samaptika Kar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The experiment was carried out at Raipur during season of 2012 to find out the optimum planting patterns for scented rice cultivation. The treatment (T2) planting of two to three seedlings hill-1 transplanted in the spacing of 25 cm from plant to plant and 25 cm from row to row recorded significantly good grain quality i.e. higher head rice recovery (41.41) along with higher gain length (8.05). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rice" title="rice">rice</a>, <a href="https://publications.waset.org/abstracts/search?q=scented" title=" scented"> scented</a>, <a href="https://publications.waset.org/abstracts/search?q=quality" title=" quality"> quality</a>, <a href="https://publications.waset.org/abstracts/search?q=yield" title=" yield "> yield </a> </p> <a href="https://publications.waset.org/abstracts/21990/agronomic-manipulation-in-cultivation-practices-of-scented-rice-for-sustainable-crop-production" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21990.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">425</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18230</span> Enhanced Enzymes Production through Immobilization of Filamentous Fungi</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zhanara%20B.%20Suleimenova">Zhanara B. Suleimenova</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhazira%20K.%20Saduyeva"> Zhazira K. Saduyeva</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Filamentous fungi are major producers of enzymes that have important applications in the food and beverage industries. The overall objective of this research is a strain improvement technology for efficient industrial enzymes production. The new way of filamentous fungi cultivation method has been developed. Such technology prolong producers’ cultivation period up to 60 days and create the opportunity to obtain enzymes repeatedly in every 2-3 days of fungal cultivation. This method is based on immobilizing enzymes producers with solid support in submerged conditions of growth. Immobilizing has a range of advantages: Decreasing the price of the final product, absence of foreign substances, controlled process of enzyme-genesis, ability of various enzymes simultaneous production, etc. Design of proposed technology gives the opportunity to increase the activity of immobilized cells culture filtrate comparing to free cells, growing in periodic culture conditions. Thus, proposed research focuses on new, more versatile, microorganisms capable of squeezing more end-products as well as proposed cultivation technology led to increased enzymatic productivity by several times. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=filamentous%20fungi" title="filamentous fungi">filamentous fungi</a>, <a href="https://publications.waset.org/abstracts/search?q=immobilization" title=" immobilization"> immobilization</a>, <a href="https://publications.waset.org/abstracts/search?q=industrial%20enzymes%20production" title=" industrial enzymes production"> industrial enzymes production</a>, <a href="https://publications.waset.org/abstracts/search?q=strain%20improvement" title=" strain improvement "> strain improvement </a> </p> <a href="https://publications.waset.org/abstracts/27195/enhanced-enzymes-production-through-immobilization-of-filamentous-fungi" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27195.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">364</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18229</span> Sustainable Cities: Viability of a Hybrid Aeroponic/Nutrient Film Technique System for Cultivation of Tomatoes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.%20Dannehl">D. Dannehl</a>, <a href="https://publications.waset.org/abstracts/search?q=Z.%20Taylor"> Z. Taylor</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Suhl"> J. Suhl</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Miranda"> L. Miranda</a>, <a href="https://publications.waset.org/abstracts/search?q=R."> R.</a>, <a href="https://publications.waset.org/abstracts/search?q=Ulrichs"> Ulrichs</a>, <a href="https://publications.waset.org/abstracts/search?q=C."> C.</a>, <a href="https://publications.waset.org/abstracts/search?q=Salazar"> Salazar</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20Fitz-Rodriguez"> E. Fitz-Rodriguez</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Lopez-Cruz"> I. Lopez-Cruz</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Rojano-Aguilar"> A. Rojano-Aguilar</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Navas-Gomez"> G. Navas-Gomez</a>, <a href="https://publications.waset.org/abstracts/search?q=U.%20Schmidt"> U. Schmidt</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Growing environmental and sustainability concerns have driven continual modernization of horticultural practices, especially for urban farming. Controlled environment and soilless production methods are increasing in popularity because of their efficient resource use and intensive cropping capabilities. However, some popular substrates used for hydroponic cultivation, particularly rock wool, represent a large environmental burden in regard to their manufacture and disposal. Substrate-less hydroponic systems are effective in producing short cropping cycle plants such as lettuce or herbs, but less information is available for the production of plants with larger root-systems and longer cropping times. Here, we investigated the viability of a hybrid aeroponic/nutrient film technique (AP/NFT) system for the cultivation of greenhouse tomatoes (<em>Solanum lycopersicum </em>‘Panovy’). The plants grown in the AP/NFT system had a more compact phenotype, accumulated more Na<sup>+</sup> and less P and S than the rock wool grown counterparts. Due to forced irrigation interruptions, we propose that the differences observed were cofounded by the differing severity of water-stress for plants with and without substrate. They may also be caused by a higher root zone temperature predominant in plants exposed to AP/NFT. However, leaf area, stem diameter, and number of trusses did not differ significantly. The same was found for leaf pigments and plant photosynthetic efficiency. Overall, the AP/NFT system appears to be viable for the production of greenhouse tomato, enabling the environment to be relieved by way of lessening rock wool usage. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=closed%20aeroponic%20systems" title="closed aeroponic systems">closed aeroponic systems</a>, <a href="https://publications.waset.org/abstracts/search?q=fruit%20quality" title=" fruit quality"> fruit quality</a>, <a href="https://publications.waset.org/abstracts/search?q=nutrient%20dynamics" title=" nutrient dynamics"> nutrient dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=substrate%20waste%20reduction" title=" substrate waste reduction"> substrate waste reduction</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20farming%20systems" title=" urban farming systems"> urban farming systems</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20savings" title=" water savings"> water savings</a> </p> <a href="https://publications.waset.org/abstracts/65351/sustainable-cities-viability-of-a-hybrid-aeroponicnutrient-film-technique-system-for-cultivation-of-tomatoes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65351.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">268</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18228</span> Dao Embodied – Embodying Dao: The Body as Locus of Personal Cultivation in Ancient Daoist and Confucian Philosophy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Geir%20Sigur%C3%B0sson">Geir Sigurðsson</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper compares ancient Daoist and Confucian approaches to the human body as a locus for learning, edification or personal cultivation. While pointing out some major differences between ancient Chinese and mainstream Western visions of the body, it seeks at the same time inspiration in some seminal Western phenomenological and post-structuralist writings, in particular from Maurice Merleau-Ponty and Pierre Bourdieu. By clarifying the somewhat dissimilar scopes of foci found in Daoist and Confucian philosophies with regard to the role of and attitude to the body, the conclusion is nevertheless that their approaches are comparable, and that both traditions take the physical body to play a vital role in the cultivation of excellence. Lastly, it will be argued that cosmological underpinnings prevent the Confucian li from being rigid and invariable and that it rather emerges as a flexible learning device to train through active embodiment a refined sensibility for one’s cultural environment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=body" title="body">body</a>, <a href="https://publications.waset.org/abstracts/search?q=Confucianism" title=" Confucianism"> Confucianism</a>, <a href="https://publications.waset.org/abstracts/search?q=Daoism" title=" Daoism"> Daoism</a>, <a href="https://publications.waset.org/abstracts/search?q=li%20%28ritual%29" title=" li (ritual)"> li (ritual)</a>, <a href="https://publications.waset.org/abstracts/search?q=phenomenology" title=" phenomenology"> phenomenology</a> </p> <a href="https://publications.waset.org/abstracts/103296/dao-embodied-embodying-dao-the-body-as-locus-of-personal-cultivation-in-ancient-daoist-and-confucian-philosophy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/103296.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">133</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18227</span> Implementation of the Circular Economy Concept in Greenhouse Production Systems: Microalgae and Biostimulant Production Using Soilless Crops’ Drainage Nutrient Solution</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nikolaos%20Katsoulas">Nikolaos Katsoulas</a>, <a href="https://publications.waset.org/abstracts/search?q=Sofia%20Faliagka"> Sofia Faliagka</a>, <a href="https://publications.waset.org/abstracts/search?q=George%20Kountrias"> George Kountrias</a>, <a href="https://publications.waset.org/abstracts/search?q=Eleni%20Dimitriou"> Eleni Dimitriou</a>, <a href="https://publications.waset.org/abstracts/search?q=Eleftheria%20Pechlivani"> Eleftheria Pechlivani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The challenges to feed the world in 2050 are becoming more and more apparent. This calls for producing more with fewer inputs (most of them under scarcity), higher resource efficiency, minimum or zero effect on the environment, and higher sustainability. Therefore, increasing the circularity of production systems is highly significant for their sustainability. Protected horticulture offers opportunities for maximum resource efficiency across various levels within and between farms and at the regional level), high-quality production, and contributes significantly to the nutrition security as part of the world food production. In greenhouses, closed soilless cultivation systems give the opportunity to increase the water and nutrient use efficiency and reduce the environmental impact of the cultivation system by the reuse of the drained water and nutrients. However, due to the low quality of the water used in the Mediterranean countries, a completely closed system is not feasible. Partial discharge of the drainage nutrient solution when the levels of electrical conductivity (EC) or of the toxic ions in the system are reached is still a necessity. Thus, in the frame of the circular economy concept, this work presents the utilisation of the drainage solution of soilless cultivation systems for microalgae and biofertilisers production. The system includes a greenhouse equipped with a soilless cultivation system, a drainage solution collection tank, a closed bioreactor for microalgae production, and a biocatalysis tank. The bioreactor tested in the frame of this work includes two closed tube loops of a capacity of 1000 L each where, after the initial inoculation, the microalgae is developed using as a growth medium the drainage solution collected from the greenhouse crops. The bioreactor includes light and temperature control while pH is still manually regulated. As soon as the microalgae culture reaches a certain density level, 20% of the culture is harvested, and the culture system is refiled by a drainage nutrient solution. The microalgae produced goes through a biocatalysis process, which leads to the production of a rich aminoacids (and nitrogen) biofertiliser. The produced biofertiliser is then used for the fertilisation of greenhouse crops. The complete production cycle along with the effects of the biofertiliser produced on crop growth and yield are presented and discussed in this manuscript. Acknowledgment: This work was carried out under the PestNu project that has received funding from the European Union’s Horizon 2020 research and innovation programme under the Green Deal grant agreement No. 101037128 — PestNu. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=soilless" title="soilless">soilless</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20use%20efficiency" title=" water use efficiency"> water use efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=nutrients%20use%20efficiency" title=" nutrients use efficiency"> nutrients use efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=biostimulant" title=" biostimulant"> biostimulant</a> </p> <a href="https://publications.waset.org/abstracts/175835/implementation-of-the-circular-economy-concept-in-greenhouse-production-systems-microalgae-and-biostimulant-production-using-soilless-crops-drainage-nutrient-solution" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/175835.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">92</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18226</span> Fed-Batch Mixotrophic Cultivation of Microalgae Scenedesmus sp., Using Airlift Photobioreactor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lakshmidevi%20Rajendran">Lakshmidevi Rajendran</a>, <a href="https://publications.waset.org/abstracts/search?q=Bharathidasan%20Kanniappan"> Bharathidasan Kanniappan</a>, <a href="https://publications.waset.org/abstracts/search?q=Gopi%20Raja"> Gopi Raja</a>, <a href="https://publications.waset.org/abstracts/search?q=Muthukumar%20Karuppan"> Muthukumar Karuppan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study investigates the feasibility of fed-batch mixotrophic cultivation of microalgae Scenedesmus sp. in a 3-litre airlift photobioreactor under standard operating conditions. The results of this study suggest the algae species may serve as an excellent feed for aquatic species using organic byproducts. Microalgae Scenedesmus sp., was cultured using a synthetic wastewater by stepwise addition of crude glycerol concentration ranging from 2-10g/l under fed-batch mixotrophic mode for a period of 15 days. The attempts were made with the stepwise addition of crude glycerol as a carbon source in the initial growth phase to evade the inhibitory nature of high glycerol concentration on the growth of Scenedesmus sp. Crude glycerol was chosen since it is readily accessible as byproduct from biodiesel production sectors. Highest biomass concentration was achieved to be 2.43 g/l at the crude glycerol concentration of 6g/l after 10 days which is 3 fold times the increase in the biomass concentration compared with the control medium without the addition of glycerol. Biomass growth data obtained for the microalgae Scenedesmus sp. was fitted well with the modified Logistic equation. Substrate utilization kinetics was also employed to model the biomass productivity with respect to the various crude glycerol concentration. The results indicated that the supplement of crude glycerol to the mixotrophic culture of Scenedesmus sp., enhances the biomass concentration, chlorophyll and lutein productivity. Thus the application of fed-batch mixotrophic cultivation with stepwise addition of crude glycerol to Scenedesmus sp., provides a subtle way to reduce the production cost and improvisation in the large-scale cultivation along with biochemical compound synthesis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=airlift%20photobioreactor" title="airlift photobioreactor">airlift photobioreactor</a>, <a href="https://publications.waset.org/abstracts/search?q=crude%20glycerol" title=" crude glycerol"> crude glycerol</a>, <a href="https://publications.waset.org/abstracts/search?q=microalgae%20Scenedesmus%20sp." title=" microalgae Scenedesmus sp."> microalgae Scenedesmus sp.</a>, <a href="https://publications.waset.org/abstracts/search?q=mixotrophic%20cultivation" title=" mixotrophic cultivation"> mixotrophic cultivation</a>, <a href="https://publications.waset.org/abstracts/search?q=lutein%20production" title=" lutein production"> lutein production</a> </p> <a href="https://publications.waset.org/abstracts/85027/fed-batch-mixotrophic-cultivation-of-microalgae-scenedesmus-sp-using-airlift-photobioreactor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85027.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">189</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18225</span> Regenerative Agriculture: A Green Economy Tool for a Sustainable Crop Production</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Meisam%20Zargar">Meisam Zargar</a>, <a href="https://publications.waset.org/abstracts/search?q=Yurii%20Pleskachov"> Yurii Pleskachov</a>, <a href="https://publications.waset.org/abstracts/search?q=Mostafa%20Abdelkader"> Mostafa Abdelkader</a>, <a href="https://publications.waset.org/abstracts/search?q=Aldaibe%20Ahmed"> Aldaibe Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Maryam%20Bayat"> Maryam Bayat</a>, <a href="https://publications.waset.org/abstracts/search?q=Malek%20H.%20Walli"> Malek H. Walli</a>, <a href="https://publications.waset.org/abstracts/search?q=Shimendi%20Okbagabir"> Shimendi Okbagabir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The increased need of humankind for foodstuffs highlights the intensification of agricultural production. It is necessary either to increase the size of the sown area or to look for new approaches to improve agricultural land productivity. Developing new areas for cultivation is possible due to the intensification of soil cultivation. Nevertheless, this will decrease the effectiveness of de-carbonization programs since this approach will inevitably increase greenhouse gas emissions. Therefore, searching for new solutions to conserve natural resources while obtaining stable predicted crop yields is a vital scientific and technical task. For a long time, destructive land use methods have been used in crop production. The present stage of civilization's development and implementation of new techniques and methods of tillage and crops require the solution of technological, economic, and environmental problems simultaneously with the possibility of creating conditions for the regeneration of soil resources. Implementing these approaches became possible due to the development of new technology for the cultivation of crops based on the exact selective impact on the object of processing. This technology of particular effects of TIV combines the positive accumulated experience of traditional farming systems and resource-saving approaches. Particularly high-quality indicators and cost savings with introducing TIV can be achieved when used on row crops, including vegetables and melons. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=agricultural%20machinery" title="agricultural machinery">agricultural machinery</a>, <a href="https://publications.waset.org/abstracts/search?q=vegetable" title=" vegetable"> vegetable</a>, <a href="https://publications.waset.org/abstracts/search?q=irrigation" title=" irrigation"> irrigation</a>, <a href="https://publications.waset.org/abstracts/search?q=strip%20system" title=" strip system"> strip system</a> </p> <a href="https://publications.waset.org/abstracts/190121/regenerative-agriculture-a-green-economy-tool-for-a-sustainable-crop-production" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/190121.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">36</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18224</span> Effect of Nitrogen and Carbon Sources on Growth and Lipid Production from Mixotrophic Growth of Chlorella sp. KKU-S2</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ratanaporn%20Leesing">Ratanaporn Leesing</a>, <a href="https://publications.waset.org/abstracts/search?q=Thidarat%20Papone"> Thidarat Papone</a>, <a href="https://publications.waset.org/abstracts/search?q=Mutiyaporn%20Puangbut"> Mutiyaporn Puangbut</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Mixotrophic cultivation of the isolated freshwater microalgae Chlorella sp. KKU-S2 in batch shake flask for biomass and lipid productions, different concentration of glucose as carbon substrate, different nitrogen source and concentrations were investigated. Using 1.0g/L of NaNO3 as nitrogen source, the maximum biomass yield of 10.04g/L with biomass productivity of 1.673g/L d was obtained using 40g/L glucose, while a biomass of 7.09, 8.55 and 9.45g/L with biomass productivity of 1.182, 1.425 and 1.575g/L d were found at 20, 30 and 50g/L glucose, respectively. The maximum lipid yield of 3.99g/L with lipid productivity of 0.665g/L d was obtained when 40g/L glucose was used. Lipid yield of 1.50, 3.34 and 3.66g/L with lipid productivity of 0.250, 0.557 and 0.610g/L d were found when using the initial concentration of glucose at 20, 30 and 50g/L, respectively. Process product yield (YP/S) of 0.078, 0.119, 0.158 and 0.094 were observed when glucose concentration was 20, 30, 40 and 50 g/L, respectively. The results obtained from the study shows that mixotrophic culture of Chlorella sp. KKU-S2 is a desirable cultivation process for microbial lipid and biomass production. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mixotrophic%20cultivation" title="mixotrophic cultivation">mixotrophic cultivation</a>, <a href="https://publications.waset.org/abstracts/search?q=microalgal%20lipid" title=" microalgal lipid"> microalgal lipid</a>, <a href="https://publications.waset.org/abstracts/search?q=Chlorella%20sp.%20KKU-S2" title=" Chlorella sp. KKU-S2"> Chlorella sp. KKU-S2</a> </p> <a href="https://publications.waset.org/abstracts/5171/effect-of-nitrogen-and-carbon-sources-on-growth-and-lipid-production-from-mixotrophic-growth-of-chlorella-sp-kku-s2" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/5171.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">345</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18223</span> Coconut Based Sustainable Agri-Silvicultural System: Success Story from Sri Lanka</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thavananthan%20Sivananthawerl">Thavananthan Sivananthawerl</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Coconut palm is existing for more than 2000 years in Sri Lanka. However, cultivation on a large scale (plantation) began only in the 19th century. Due to different light perceptions during the growth stages of palm, there is a huge potential to grow crops in-between rows of coconut plants which are grown with wider, fixed spacing. Intercropping under coconut will have multiple benefits such as increasing soil fertility, increasing sunlight utilization, increasing total crop productivity, increasing income & profit, maximum use of resources, reducing the risk, and increasing food security. Growing potential annual, agricultural intercrops could be classified as ‘agri-silvicultural’ system. This is the best agri-silvicultural system that can be named under any perennial crop system in Sri Lanka. In the late 1970’s cassava, pepper and cacao are the major intercrops under the coconut plantations. At the early ages of the palm (<5 years) light-loving crops such as pineapple, passion, papaya, and cassava are recommended and preferred by the cultivators. In between 5-20 years of age, the availability of light is very low, and therefore shade tolerant/loving crops (pasture, yam, ginger) could be used as the intercrops. However, after 20 years of age (>20 years) canopy is getting small, and the light availability on the ground increases. So, light demanding crops such as pepper, banana, pineapple, betel, cassava, and seasonal crops could be grown successfully. Even though this is a sustainable system in several aspects, there are potential challenges ahead to the system. The major ones are land fragmentation and infrastructure development. The other factors are drought, lack of financial support, price instability of the intercrops, availability of improved planting materials, and development of dwarf varieties which reduces the light. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coconut%20cultivation" title="coconut cultivation">coconut cultivation</a>, <a href="https://publications.waset.org/abstracts/search?q=agri-silviculture" title=" agri-silviculture"> agri-silviculture</a>, <a href="https://publications.waset.org/abstracts/search?q=intercrop" title=" intercrop"> intercrop</a>, <a href="https://publications.waset.org/abstracts/search?q=sunlight" title=" sunlight"> sunlight</a>, <a href="https://publications.waset.org/abstracts/search?q=annuals" title=" annuals"> annuals</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainability" title=" sustainability"> sustainability</a> </p> <a href="https://publications.waset.org/abstracts/155671/coconut-based-sustainable-agri-silvicultural-system-success-story-from-sri-lanka" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/155671.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">128</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18222</span> Fundamentals and Techniques of Organic Agriculture in Egypt</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Moustafa%20Odah">Moustafa Odah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Organic Agriculture is a new and sustainable agricultural system that depends on the use of organic materials from within the farm resulting from crop residues and animal husbandry and the cultivation of leguminous crops, away from the use of chemicals in fertilization or pest resistance, which leads to the production of safe, clean and healthy food products with nutritional value high and free of chemicals enhance food security; it is also an agricultural model preserve natural resources by improving the fertility and soil characteristics, and enhance biodiversity and biological cycles; additionally, they preserve the environment from pollution, which makes it play an important role in providing food needs of the present generations and the preservation of the rights of the coming generations to achieve sustainable development. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=organic%20agriculture" title="organic agriculture">organic agriculture</a>, <a href="https://publications.waset.org/abstracts/search?q=food%20security%20and%20achieving%20sustainable%20development" title=" food security and achieving sustainable development"> food security and achieving sustainable development</a>, <a href="https://publications.waset.org/abstracts/search?q=fertilization%20or%20pest%20resistance" title=" fertilization or pest resistance"> fertilization or pest resistance</a>, <a href="https://publications.waset.org/abstracts/search?q=crop%20residues%20%20and%20animal%20husbandry%20and%20the%20cultivation%20of%20leguminous%20crops" title=" crop residues and animal husbandry and the cultivation of leguminous crops"> crop residues and animal husbandry and the cultivation of leguminous crops</a> </p> <a href="https://publications.waset.org/abstracts/163794/fundamentals-and-techniques-of-organic-agriculture-in-egypt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163794.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">91</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18221</span> Measuring Greenhouse Gas Exchange from Paddy Field Using Eddy Covariance Method in Mekong Delta, Vietnam</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vu%20H.%20N.%20Khue">Vu H. N. Khue</a>, <a href="https://publications.waset.org/abstracts/search?q=Marian%20Pavelka"> Marian Pavelka</a>, <a href="https://publications.waset.org/abstracts/search?q=Georg%20Jocher"> Georg Jocher</a>, <a href="https://publications.waset.org/abstracts/search?q=Ji%C5%99%C3%AD%20Du%C5%A1ek"> Jiří Dušek</a>, <a href="https://publications.waset.org/abstracts/search?q=Le%20T.%20Son"> Le T. Son</a>, <a href="https://publications.waset.org/abstracts/search?q=Bui%20T.%20An"> Bui T. An</a>, <a href="https://publications.waset.org/abstracts/search?q=Ho%20Q.%20Bang"> Ho Q. Bang</a>, <a href="https://publications.waset.org/abstracts/search?q=Pham%20Q.%20Huong"> Pham Q. Huong</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Agriculture is an important economic sector of Vietnam, the most popular of which is wet rice cultivation. These activities are also known as the main contributor to the national greenhouse gas. In order to understand more about greenhouse gas exchange in these activities and to investigate the factors influencing carbon cycling and sequestration in these types of ecosystems, since 2019, the first eddy covariance station has been installed in a paddy field in Long An province, Mekong Delta. The station was equipped with state-of-the-art equipment for CO₂ and CH₄ gas exchange and micrometeorology measurements. In this study, data from the station was processed following the ICOS recommendations (Integrated Carbon Observation System) standards for CO₂, while CH₄ was manually processed and gap-filled using a random forest model from methane-gapfill-ml, a machine learning package, as there is no standard method for CH₄ flux gap-filling yet. Finally, the carbon equivalent (Ce) balance based on CO₂ and CH₄ fluxes was estimated. The results show that in 2020, even though a new water management practice - alternate wetting and drying - was applied to reduce methane emissions, the paddy field released 928 g Cₑ.m⁻².yr⁻¹, and in 2021, it was reduced to 707 g Cₑ.m⁻².yr⁻¹. On a provincial level, rice cultivation activities in Long An, with a total area of 498,293 ha, released 4.6 million tons of Cₑ in 2020 and 3.5 million tons of Cₑ in 2021. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=eddy%20covariance" title="eddy covariance">eddy covariance</a>, <a href="https://publications.waset.org/abstracts/search?q=greenhouse%20gas" title=" greenhouse gas"> greenhouse gas</a>, <a href="https://publications.waset.org/abstracts/search?q=methane" title=" methane"> methane</a>, <a href="https://publications.waset.org/abstracts/search?q=rice%20cultivation" title=" rice cultivation"> rice cultivation</a>, <a href="https://publications.waset.org/abstracts/search?q=Mekong%20Delta" title=" Mekong Delta"> Mekong Delta</a> </p> <a href="https://publications.waset.org/abstracts/175768/measuring-greenhouse-gas-exchange-from-paddy-field-using-eddy-covariance-method-in-mekong-delta-vietnam" class="btn btn-primary 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