Search results for: Halilat M. El-Taher

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El-Taher</title> <meta name="description" content="Search results for: Halilat M. El-Taher"> <meta name="keywords" content="Halilat M. El-Taher"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="Halilat M. 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El-Taher"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div 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> 3</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Halilat M. El-Taher</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3</span> Effect of Organic Fertilizers on the Improvement of Soil Microbiological Functioning under Saline Conditions of Arid Regions: Impact on Carbon and Nitrogen Mineralization </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Oustani%20Mabrouka">Oustani Mabrouka</a>, <a href="https://publications.waset.org/abstracts/search?q=Halilat%20Md%20Tahar"> Halilat Md Tahar</a>, <a href="https://publications.waset.org/abstracts/search?q=Hannachi%20Slimane"> Hannachi Slimane </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study was conducted on representative and contrasting soils of arid regions. It focuses on the compared influence of two organic fertilizers: poultry manure (PM) and bovine manure (BM) on improving the microbial functioning of non-saline (SS) and saline (SSS) soils, in particularly, the process of mineralization of nitrogen and carbon. The microbiological activity was estimated by respirometric test (CO2鈥揅 emissions) and the extraction of two forms of mineral nitrogen (NH4+-N and NO3--N). Thus, after 56 days of incubation under controlled conditions (28 degrees and 80 per cent of the field capacity), the two types of manures showed that the mineralization activity varies according to type of soil and the organic substrate itself. However, the highest cumulative quantities of CO2鈥揅, NH4+鈥揘 and NO3-鈥揘 obtained at the end of incubation were recorded in non-saline (SS) soil treated with poultry manure with 1173.4, 4.26 and 8.40 mg/100 g of dry soil, respectively. The reductions in rates of release of CO2鈥揅 and of nitrification under saline conditions were 21 and 36, 78 %, respectively. The influence of organic substratum on the microbial density shows a stimulating effect on all microbial groups studied. The whole results show the usefulness of two types of manures for the improvement of the microbiological functioning of arid soils. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Salinity" title="Salinity">Salinity</a>, <a href="https://publications.waset.org/abstracts/search?q=Organic%20matter" title=" Organic matter"> Organic matter</a>, <a href="https://publications.waset.org/abstracts/search?q=Microorganisms" title=" Microorganisms"> Microorganisms</a>, <a href="https://publications.waset.org/abstracts/search?q=Mineralization" title=" Mineralization"> Mineralization</a>, <a href="https://publications.waset.org/abstracts/search?q=Nitrogen" title=" Nitrogen"> Nitrogen</a>, <a href="https://publications.waset.org/abstracts/search?q=Carbon" title=" Carbon"> Carbon</a>, <a href="https://publications.waset.org/abstracts/search?q=Arid%20regions" title=" Arid regions"> Arid regions</a> </p> <a href="https://publications.waset.org/abstracts/21670/effect-of-organic-fertilizers-on-the-improvement-of-soil-microbiological-functioning-under-saline-conditions-of-arid-regions-impact-on-carbon-and-nitrogen-mineralization" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21670.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">280</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">2</span> The Effect of Soil in the Allelopathic Potential of Artemisia herba-alba and Oudneya africana Crude Powder on Growth of Weeds</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Salhi%20Nesrine">Salhi Nesrine</a>, <a href="https://publications.waset.org/abstracts/search?q=Salama%20M.%20El-Darier"> Salama M. El-Darier</a>, <a href="https://publications.waset.org/abstracts/search?q=Halilat%20M.%20El-Taher"> Halilat M. El-Taher</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present study aimed to investigate the effect of two type of soil (clay and sandy soils) in the potential allelopathic effects of Artemisia herba-alba, Oudneya africana crude powder on some growth parameters and phytomass of two weeds (Bromus tectorum and Melilotus indica) under laboratory conditions (pot experiment). The experimental findings have reported that the donor species crude powder concentrations were suppressing to shoot length (SL), root length (RL), fresh and dry weight of shoot and root (SFw, RFw, SDw and RDw, respectively and the leaf number (LN)) in both soil types and caused a gradual reduction particularly when they are high. However, the reduction degree was varied and species, concentration dependent. The suppressive effect of all the eight donors on the two weedy species was in the following order Bromus tectorum> Melilotus indica. Generally, the growth parameters of two recipient species were significantly decreased with the increase of each of the donor species crude powder concentration levels. Concerning the type of sol the t-test indicated that the difference was insignificant between clay and sandy soils. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=allelopathy" title="allelopathy">allelopathy</a>, <a href="https://publications.waset.org/abstracts/search?q=soil" title=" soil"> soil</a>, <a href="https://publications.waset.org/abstracts/search?q=Artemisia%20herba-alba" title=" Artemisia herba-alba"> Artemisia herba-alba</a>, <a href="https://publications.waset.org/abstracts/search?q=Oudneya%20africana" title=" Oudneya africana"> Oudneya africana</a>, <a href="https://publications.waset.org/abstracts/search?q=growth" title=" growth"> growth</a>, <a href="https://publications.waset.org/abstracts/search?q=weeds" title=" weeds "> weeds </a> </p> <a href="https://publications.waset.org/abstracts/1336/the-effect-of-soil-in-the-allelopathic-potential-of-artemisia-herba-alba-and-oudneya-africana-crude-powder-on-growth-of-weeds" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/1336.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">361</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">1</span> Physico-Chemical and Microbial Changes of Organic Fertilizers after Compositing Processes under Arid Conditions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Oustani%20Mabrouka">Oustani Mabrouka</a>, <a href="https://publications.waset.org/abstracts/search?q=Halilat%20Med%20Tahar"> Halilat Med Tahar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The physico-chemical properties of poultry droppings indicate that this waste can be an excellent way to enrich the soil with low fertility that is the case in arid soils (low organic matter content), but its concentrations in some microbial and chemical components make them potentially dangerous and toxic contaminants if they are used directly in fresh state. On other hand, the accumulation of plant residues in the crop areas can become a source of plant disease and affects the quality of the environment. The biotechnological processes that we have identified appear to alleviate these problems. It leads to the stabilization and processing of wastes into a product of good hygienic quality and high fertilizer value by the composting test. In this context, a trial was conducted in composting operations in the region of Ouargla located in southern Algeria. Composing test was conducted in a completely randomized design experiment. Three mixtures were prepared, in pits of 1 m3 volume for each mixture. Each pit is composed by mixture of poultry droppings and crushed plant residues in amount of 40 and 60% respectively: C1: Droppings + Straw (P.D +S) , C2: Poultry Droppings + Olive Wastes (P.D+O.W) , C3: Poultry Droppings + Date palm residues (P.D+D.P). Before and after the composting process, physico-chemical parameters (temperature, moisture, pH, electrical conductivity, total carbon and total nitrogen) were studied. The stability of the biological system was noticed after 90 days. The results of physico-chemical and microbiological compost obtained from three mixtures: C1: (P.D +S) , C2: (P.D+O.W) and C3: (P.D +D.P) shows at the end of composting process, three composts characterized by the final products were characterized by their high agronomic and environmental interest with a good physico chemical characteristics in particularly a low C/N ratio with 15.15, 10.01 and 15.36 % for (P.D + S), (P.D. + O.W) and (P.D. +D.P), respectively, reflecting a stabilization and maturity of the composts. On the other hand, a significant increase of temperature was recorded at the first days of composting for all treatments, which is correlated with a strong reduction of the pathogenic micro flora contained in poultry dropings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arid%20environment" title="Arid environment">Arid environment</a>, <a href="https://publications.waset.org/abstracts/search?q=Composting" title=" Composting"> Composting</a>, <a href="https://publications.waset.org/abstracts/search?q=Date%20palm%20residues" title=" Date palm residues"> Date palm residues</a>, <a href="https://publications.waset.org/abstracts/search?q=Olive%20wastes" title=" Olive wastes"> Olive wastes</a>, <a href="https://publications.waset.org/abstracts/search?q=pH" title=" pH"> pH</a>, <a href="https://publications.waset.org/abstracts/search?q=Pathogenic%20microorganisms" title=" Pathogenic microorganisms"> Pathogenic microorganisms</a>, <a href="https://publications.waset.org/abstracts/search?q=Poultry%20Droppings" title=" Poultry Droppings"> Poultry Droppings</a>, <a href="https://publications.waset.org/abstracts/search?q=Straw" title=" Straw"> Straw</a> </p> <a href="https://publications.waset.org/abstracts/21679/physico-chemical-and-microbial-changes-of-organic-fertilizers-after-compositing-processes-under-arid-conditions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21679.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">235</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a 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Search results for: Halilat M. El-Taher