<?xml version="1.0" encoding="utf-8"?> <feed xmlns="http://www.w3.org/2005/Atom"> <title type="text">Horticultura Brasileira</title> <id>https://www.scielo.br/journal/hb/feed/</id> <updated>2024-10-22T19:15:38.840000Z</updated> <link href="https://www.scielo.br/" /> <link href="https://www.scielo.br/journal/hb/feed/" rel="self" /> <subtitle type="text">Vol. 42 - 2024</subtitle> <generator>Werkzeug</generator> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Foliar biofortification with copper nanoparticles and its effect on phytochemical quality and enzymatic activity in lettuce</title> <id>10.1590/s0102-0536-2024-e2617</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/HTzC6mCRjmFYR3KpytPZwNN/?lang=en" /> <author> <name>Fortis-Hernández, Manuel</name> </author> <author> <name>González-Rodríguez, Tony</name> </author> <author> <name>Espinosa-Palomeque, Bernardo</name> </author> <author> <name>Preciado-Rangel, Pablo</name> </author> <author> <name>Gallegos-Robles, Miguel Angel</name> </author> <author> <name>Rueda-Puente, Edgar Omar</name> </author> <content type="html"> Fortis-Hernández, Manuel; González-Rodríguez, Tony; Espinosa-Palomeque, Bernardo; Preciado-Rangel, Pablo; Gallegos-Robles, Miguel Angel; Rueda-Puente, Edgar Omar; ABSTRACT The objective of this study was to evaluate the foliar application of copper oxide nanoparticles (NPs-CuO) on the phytochemical quality, yield, catalase and peroxidase activity of the hydroponic lettuce crop. Five concentrations (5, 10, 15, 20 and 25 mg/L) of NPs-CuO and a control (0 mg/L) were compared. The experiment was established in a completely randomized design with five repetitions. Data were analyzed with analysis of variance and mean comparisons using Tukey&#39;s test (0.05). The results indicate that, under the hydroponic conditions, the lettuce plants showed a greater number of leaves, leaf width and the peroxidase enzyme activity was recorded with the concentration of 15 mg/L NPs-CuO. The concentration of 10 mg/L of NPs-CuO yielded higher contents of total phenols, total flavonoids and antioxidant capacity, being 46.63, 34.21 and 28.23% higher compared to the control treatment, respectively. Regarding the concentration of Cu in the lettuce leaf, the 20 mg/L treatment showed the highest concentration with a value of 9.93±2.40 µg/L DW. The use of copper nanoparticles could be an effective alternative to mitigate copper deficiency in the diet of the human population.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">The soil characteristics and morpho-physiological traits of two violet (Viola sp.) species as influenced by gibberellic acid and nitrogen</title> <id>10.1590/s0102-0536-2023-e2600</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/jgc8YKjwKQhFBhPkjRHKVDH/?lang=en" /> <author> <name>Nekouyar, Neda</name> </author> <author> <name>Naderi, Roohangiz</name> </author> <author> <name>Hashemabadi, Davood</name> </author> <author> <name>Torkashvand, Ali Mohammadi</name> </author> <content type="html"> Nekouyar, Neda; Naderi, Roohangiz; Hashemabadi, Davood; Torkashvand, Ali Mohammadi; ABSTRACT Violet, with its pleasant scent and attractive flower color, is also important for its medicinal and edible uses, in addition to ornamental uses. Proper nutrition of the plant (violet) with essential nutrients and growth hormones improves the quantitative and qualitative characteristics and can increase the economic value and popularity of these flowers. In this regard, the current research aims to investigate the combined effect of nitrogen (N) and gibberellic acid (GA) on the morphophysiological traits of two native Iranian violet species (Viola tricolor and Viola odorata), as a factorial experiment with three factors including two species of violets, three levels of GA (0, 150 and 300 mg/L) and three levels of N (0, 100 and 200 mg/L) in a completely randomized design with 18 treatments, 3 replications and a total of 216 plants. Some characteristics of planting medium, morphophysiological traits and activity of antioxidant enzymes were evaluated. The results of ANOVA showed that the three-way effect of experimental treatments on all evaluated traits is significant. According to the results of comparing the averages the N application reduced the soil electrical conductivity (EC) versus its non-application in both violet species and at all GA levels. The highest soil N in both species was obtained from the application of 0 mg/L GA × 100 or 200 mg/L N. In two species of violets, the highest number of leaves, flowers, and stolons was obtained from the treatment of 300 mg/L GA × 200 mg/L N. The highest chlorophyll a and total chlorophyll among the treatments were related to V. odorata × 150 mg/L GA × 200 mg/L N. The application of GA and N in both species increased peroxidase activity versus the control. The highest level of this enzyme activity was related to 300 mg/L GA × 200 mg/L N. V. odorata had higher peroxidase activity than V. tricolor. The lowest and highest levels of catalase activity were recorded by control × V. tricolor (0.13 nM/g FW/min) and V. odorata × 300 mg/L GA × 200 mg/L N (0.676 nM/g FW/min), respectively. According to the results, with the application of 300 or 150 mg/L GA × 200 mg/L N, the ornamental and edible properties of these two types of violets are improved, and their economic value and marketability are increased, and there will be a change in the sales market of these flowers.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Yield and physical-chemical quality of okra fruits irrigated with brackish water and phosphorus fertilization</title> <id>10.1590/s102-0536-2024-2607</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/FFW54fNnvrhyHknbKPZdVXg/?lang=en" /> <author> <name>Cruz Filho, Elizeu M</name> </author> <author> <name>Sousa, Geocleber G de</name> </author> <author> <name>Costa, Francisco Hermeson R da</name> </author> <author> <name>Sousa, Henderson C</name> </author> <author> <name>Silva, Fred Denilson B da</name> </author> <author> <name>Schneider, Fernanda</name> </author> <author> <name>Silva, Ênio FF e</name> </author> <author> <name>Leite, Kelly N</name> </author> <content type="html"> Cruz Filho, Elizeu M; Sousa, Geocleber G De; Costa, Francisco Hermeson R Da; Sousa, Henderson C; Silva, Fred Denilson B Da; Schneider, Fernanda; Silva, Ênio Ff E; Leite, Kelly N; ABSTRACT Phosphate fertilization can mitigate the deleterious effects of salts in the different stages of okra. The objective was to evaluate the effect of the cyclical use of water of lower and higher ECw at different phenological stages under phosphorus fertilization on productivity and fruit quality of okra. A completely randomized design was used, in a 4 x 3 factorial scheme, with four irrigation strategies of cyclical use with water of 0.3 dS/m (W1) and 2.0 dS/m (W2) applied in different phenological stages (IS1 = W1 throughout the cultivation cycle; IS2 = W2 in the establishment phase, W1 in the vegetative phase and W2 in the reproductive and maturation phase; IS3 = W1 in the establishment phase and W2 in the vegetative, reproductive and maturation phase; and IS4 = W1 in the establishment and vegetative phase, and W2 in the reproductive and maturation phase, with three doses of phosphorus (0, 50 and 100 kg/ha), and four replications. Cyclic water use of 0.3 dS/m in the establishment and vegetative phase and 2.0 dS/m in the reproductive and maturation phase reduced the thickness of the peel, while for the length of the fruit this reduction was evidenced with the use of water 0.3 dS/m throughout the cycle. Doses of 50 and 100 kg/ha provided greater performance in fruit quality and productivity of okra.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Agronomic efficiency of fermented composts formulated with tephrosia phytomass in arugula crop</title> <id>10.1590/s0102-0536-2024-e2624</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/QTmgrhHGqstTnDHZSV7L9RS/?lang=en" /> <author> <name>Aguiar, Beatriz Gaspar de</name> </author> <author> <name>Guerra, José Guilherme Marinho</name> </author> <author> <name>Goulart, Jhonatan Marins</name> </author> <author> <name>Espindola, José Antonio Azevedo</name> </author> <author> <name>Araújo, Ednaldo da Silva</name> </author> <content type="html"> Aguiar, Beatriz Gaspar De; Guerra, José Guilherme Marinho; Goulart, Jhonatan Marins; Espindola, José Antonio Azevedo; Araújo, Ednaldo Da Silva; ABSTRACT This study aimed to determine the chemical, physical-chemical properties and agronomic efficiency of fermented composts formulated with agro-industrial wastes and tephrosia (Tephrosia sinapou) phytomass (TS) in arugula fertilization. The experiment was carried out in two phases, using wheat bran (FT), sugarcane bagasse (BC), TS phytomass and malt bagasse (BM) in the compound formulations. The first stage consisted of evaluating the chemical and physical-chemical properties in a completely randomized experimental design with 9 treatments (60TS+30FT+10BC; 60TS+30BM+10BC; 60TS+20FT+20BC; 60TS+20BM+20BC; 60TS+ 10FT+30BC; 60TS+10BM+30BC; 60TS+40FT; 60TS+40BM; 60TS+40BC) and four replicates. The second stage consisted of evaluating the agronomic efficiency of the formulations 60TS+40FT, 60TS+10FT+30BC, 60TS+40BM, 60TS+10BM+30BC and 60TS+40BC in arugula crop and a control treatment (without fertilizer). The fermented composts showed suitable chemical and physical-chemical properties for being used as fertilizers. Tephrosia phytomass has the potential for producing fermented composts, whose combination with 40% FT or BM, respectively, provided increases in N, P, K, Ca and Mg uptake, and in arugula productivity of 129,14% and 127.32% higher than the control (without any organic fertilizer)</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Iodine biofortification improves yield and bioactive compounds in melon fruits</title> <id>10.1590/s0102-0536-2024-e275325</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/87RWtbSkfMD6mggd7CNkcQz/?lang=en" /> <author> <name>Andrade-Sifuentes, Alfonso</name> </author> <author> <name>Gaucin-Delgado, Jazmín M.</name> </author> <author> <name>Fortis-Hernandez, Manuel</name> </author> <author> <name>Ojeda-Barrios, Damaris L.</name> </author> <author> <name>Rodríguez-Ortiz, Juan C.</name> </author> <author> <name>Sánchez-Chavez, Esteban</name> </author> <author> <name>Preciado-Rangel, Pablo</name> </author> <content type="html"> Andrade-Sifuentes, Alfonso; Gaucin-Delgado, Jazmín M.; Fortis-Hernandez, Manuel; Ojeda-Barrios, Damaris L.; Rodríguez-Ortiz, Juan C.; Sánchez-Chavez, Esteban; Preciado-Rangel, Pablo; ABSTRACT Iodine (I) is a crucial micronutrient for human health, as its insufficient intake can lead to various health problems, such as thyroid dysfunction. Although not essential for terrestrial plants, I can act as a biostimulant at appropriate concentrations, promoting good crop productivity and metabolism changes. This study aimed to investigate the effects of foliar spray of I on melon yield, antioxidant compounds, and their accumulation in fruits. The experiment involved applying different doses of I (0, 5, 10, 15, and 20 µM/L) every 15 days after transplanting. Results showed that low doses of I (5 µM/L) improved melon yield and commercial quality, while high doses (20 µM/L) decreased yield and commercial quality, but increased the biosynthesis of bioactive compounds and I on the fruits. Therefore, plant biofortification is an important technique to increase I concentrations in crops and produce functional foods with potential health benefits.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Efficiency of the floating system in the production of lettuce seedlings using different trays and concentrations of nutrient solution</title> <id>10.1590/s0102-0536-2024-e2610</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/qcpdJ4NLLK8DTPfDfYWf7cp/?lang=en" /> <author> <name>Oliveira, Francisco de Assis de</name> </author> <author> <name>Santana, Francisco Cassio Gomes</name> </author> <author> <name>Oliveira, Mychelle Karla Teixeira de</name> </author> <author> <name>Lima, Breno Leonan de Carvalho</name> </author> <author> <name>Pereira, Kleane Targino Oliveira</name> </author> <author> <name>Neta, Helena Maria de Morais</name> </author> <author> <name>Costa, Mário Jonas Veras</name> </author> <author> <name>Oliveira, Carlos Eduardo Alves de</name> </author> <content type="html"> Oliveira, Francisco De Assis De; Santana, Francisco Cassio Gomes; Oliveira, Mychelle Karla Teixeira De; Lima, Breno Leonan De Carvalho; Pereira, Kleane Targino Oliveira; Neta, Helena Maria De Morais; Costa, Mário Jonas Veras; Oliveira, Carlos Eduardo Alves De; ABSTRACT The quality of seedlings is a determining factor to guarantee the greatest potential crop productivity. The aim of this study was to evaluate the quality of lettuce seedlings grown in floating system, in relation to cell volume and electrical conductivity of the nutrient solution. The experiment was carried out in a completely randomized design, in a 3 x 2 x 4 factorial scheme, with three replicates. Seedlings of three lettuce cultivars (Great Lakes 659, Elba and Creta) were produced in two types of trays (128 and 200 cells) and fertigated with nutrient solutions (four electrical conductivities of 1.0; 1.5; 2.0 and 2.5 dS/m). The variables evaluated were: height, number of leaves, length of the main root, stem diameter, leaf area, total dry mass and shoot dry mass/roots dry mass (MSPA/MSR) ratio. Great Lakes 659 showed more vigorous seedlings for most of the evaluated variables. The three cultivars produced higher quality seedlings when cultivated in trays with 128 cells, with the EC of the nutrient solution ranging from 1.8 to 2.0 dS/m.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Edaphic silicon nutrition of tomato biostimulates their growth, yield and antioxidant composition under greenhouse conditions</title> <id>10.1590/s0102-0536-2024-e276481</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/64nr8zdnQGFBhPT8YzTbLSk/?lang=en" /> <author> <name>Reyes-Pérez, Juan José</name> </author> <author> <name>Murillo-Noboa, Kevin Patricio</name> </author> <author> <name>Murillo-Amador, Bernardo</name> </author> <author> <name>Hernández-Montiel, Luis Guillermo</name> </author> <author> <name>Maciel-Torres, Sandra Patricia</name> </author> <author> <name>Rivas-Garcia, Tomas</name> </author> <content type="html"> Reyes-Pérez, Juan José; Murillo-Noboa, Kevin Patricio; Murillo-Amador, Bernardo; Hernández-Montiel, Luis Guillermo; Maciel-Torres, Sandra Patricia; Rivas-Garcia, Tomas; ABSTRACT Silicon (Si) has multiple benefits in crops. Most of the studies on Si have been carried out by applying some type of stress. It has even been suggested that the positive response of Si is determined by the degree of stress in the plant, and there is little information on Si and its effect on the plant when there is no induced stress factor. The objective of the study was to determine the effect of edaphic Si on the growth, production and concentration of antioxidants in tomato under greenhouse conditions without induced stress. The treatments were three doses of Si (0.06, 0.12 and 0.18 g/plant) and a control (0.0 g/plant). The treatments were distributed in a completely randomized design with four repetitions. The addition of Si in tomato plants increased biomass production, the number of fruits and yield. In addition, in the treatments with the highest dose of Si, the concentration of antioxidants increased, as well as the total antioxidant capacity. It is suggested to include Si in tomato fertilization programs as a sustainable alternative to improve crop growth and productivity.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Role of sanitizers and biostimulants on root and shoot growth and enzyme activity of arracacha propagules</title> <id>10.1590/s0102-0536-2024-e280342</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/BVYTYHRV79wchJfPWnWH6BB/?lang=en" /> <author> <name>Santos, Leandro dos</name> </author> <author> <name>Macedo, Willian R</name> </author> <content type="html"> Santos, Leandro Dos; Macedo, Willian R; ABSTRACT Biostimulants are chemical or biological components adopted to improve nutrient uptake/efficiency and tolerance to abiotic stresses in crops. We studied three biostimulants (Stimulate®, tryptophol and Bacillus subtilis C-3102) associated to two sanitizers (sodium hypochlorite or thymol), on initial growth of propagules of Arracacia xanthorrhiza. Sodium hypochlorite associated to B. subtilis improve the leaf gas exchange, furthermore this treatment showed greater root volume. The interaction among sodium hypochlorite and tryptophol improves the plant branching; in addition this association showed better results for root dry mass. Different biostimulants improve differently the arracacha organs development, hence it is necessary to evaluate the plant morphophysiological competence to apply the correct biostimulant and sanitizer.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Different sources of nutrients in the production and quality of “Veneranda” curly lettuce</title> <id>10.1590/s0102-0536-2024-e2616</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/HP9WpX7WmmcZDCN3rNKsg4x/?lang=en" /> <author> <name>Monteiro, Shirley S</name> </author> <author> <name>Martins, Laesio P</name> </author> <author> <name>Araújo, Raunira da C</name> </author> <author> <name>Silva, Elnatan A da</name> </author> <author> <name>Monteiro, Shênia S</name> </author> <content type="html"> Monteiro, Shirley S; Martins, Laesio P; Araújo, Raunira Da C; Silva, Elnatan A Da; Monteiro, Shênia S; ABSTRACT Driven by the growing demand for good quality food, agriculture is changing the way of cultivation to attend consumer’s expectations. In addition to the nutritional value, the production system has been an important factor in the consumer’s intention to purchase products. In this scenario, this work aimed to evaluate the effects of different nutrient sources on production characteristics and nutritional quality of &#39;Veneranda&#39; lettuce. The experiment was conducted in randomized block design, with seven treatments (control, bokashi, organic compost, mineral fertilizer, mineral fertilizer + organic compost, foliar biofertilizer and soil biofertilizer), and five replications. In commercial vegetative stage, lettuce was harvested and evaluated for physical, physicochemical, bioactive compounds and mineral composition. Lettuce produced with mineral and organomineral fertilizers showed the highest yield of physical characteristics, which is related to the highest nitrogen content in their leaves. The use of organomineral fertilization, organic and mineral compost and biofertilizer via leaf application presented a positive effect on lettuce cultivation, with better nutritional quality and productivity.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Adaptability and stability of purple-fleshed sweetpotato genotypes in producing regions of Brazil using the AMMI and WAASB methodologies</title> <id>10.1590/s0102-0536-2024-e276055</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/MsZ75Rn9nr8W37KXbXNz5Nt/?lang=en" /> <author> <name>Silva, Giovani Olegario da</name> </author> <author> <name>Vendrame, Larissa P de C</name> </author> <author> <name>Amaro, Geovani Bernardo</name> </author> <author> <name>Melo, Raphael Augusto de C e</name> </author> <author> <name>Pilon, Lucimeire</name> </author> <author> <name>Ferreira, José Carlos</name> </author> <content type="html"> Silva, Giovani Olegario Da; Vendrame, Larissa P De C; Amaro, Geovani Bernardo; Melo, Raphael Augusto De C E; Pilon, Lucimeire; Ferreira, José Carlos; ABSTRACT Purple-fleshed sweetpotato (Ipomoea batatas) have gained attention from producers and consumers for their nutritional values and high levels of anthocyanins. This study aimed to evaluate the adaptability and stability of these genotypes in producing regions of Brazil with AMMI and WAASB methodologies. The recently released purple-fleshed cultivars BRS Anembé and BRS Cotinga, along with four purple-fleshed advanced clones (BGBD0080, BGBD1399, BGBD1402, and BGBD1405), and the cultivars Brazlândia Roxa and Beauregard as controls, were evaluated in eight environments using a complete randomized block design with four replications. The roots were evaluated on yield, appearance, insect damage, and shape traits. The new purple-fleshed cultivars BRS Cotinga and BRS Anembé stood out in their higher root yield, good root shape and weight, expressive resistance to insect damage, and adaptability to environments with higher yield potential. Additionally, ‘BRS Anembé’ also showed a favorable root appearance. The cultivar Beauregard was the most susceptible to insect damage while ‘Brazlândia Roxa’ demonstrated the highest resistance.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Water use efficiency of grape tomatoes subjected to different types of substrates, methods of conduction and irrigation management strategies</title> <id>10.1590/s0102-0536-2024-e279426</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/RzjWJ8NTfsg9ytpqgrqwVnv/?lang=en" /> <author> <name>Santos, Moacir A dos</name> </author> <author> <name>Silva, Alisson JP da</name> </author> <author> <name>Santos, Delfran B dos</name> </author> <author> <name>Alves, Marcio da S</name> </author> <author> <name>Freitas, Fabio TO de</name> </author> <content type="html"> Santos, Moacir A Dos; Silva, Alisson Jp Da; Santos, Delfran B Dos; Alves, Marcio Da S; Freitas, Fabio To De; ABSTRACT Considering the climate uncertainty, an increase in world population and the need to produce food under low water availability, studies showing alternatives for vegetable production, having in mind the rational use of water, are extremely necessary. The aim of this study was to evaluate the effects of the type of substrate, sprout thinning and irrigation management strategies on water use efficiency (WUE) and grape tomato (Solanum lycopersicum L.) yield in a protected environment. Tomatoes were grown with one, two, three and four stems. Additionally, the impacts of “fixed” and “variable” rates of irrigation on the crop productivity and water consumption of the plants were verified. The used substrates were: 100% local soil; 80% local soil + 20% carbonized rice husk; and commercial substrate Carolina Soil XVI®. Plant spacing was 1x0.7 m. The plants were arranged in a completely randomized experimental design in a protected environment. The 3x4x2 factorial scheme (3 substrates, 4 ways of conducting stems and 2 ways of managing irrigation) resulted in 24 treatments and five replications. Water use efficiency and plant yield were evaluated. No difference in the averages of the production variables in relation to irrigation management strategies was observed. The fixed and variable rate of irrigation did not influence productivity, both in mass and number of fruits. However, when grape tomato was grown with only one stem, the production was reduced, compared to the crop grown using two, three and four stems. WUE was 8.9 g/L when the crop was grown with 1 stem; when growing with 2 stems, an increase in WUE was noticed, 30.8% (11.6 g/L); from 1 to 3 stems an increase of 53.4% (13.7 g/L) was noticed, and from 1 to 4 stems, the authors observed an increase of 55.8% (13.9 g/L). An increase in the number of stems per cultivated plant resulted in greater WUE. The types of substrates influenced the total mass obtained; plants grown in commercial substrate showed an average of 14.9 g/L, whereas when growing in soil and mixture of soil + rice husk no significant variations were observed, 10.3 g/L and 10.1 g/L, respectively.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Residual effect of phosphorus sources on the presence and absence of organic compost in the production of beet and chicory in subsequent cultivation of broccoli</title> <id>10.1590/s0102-0536-2024-e2543</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/tc8GG8bVR3fk9ZBLvLHyx4J/?lang=en" /> <author> <name>Cardoso, Antonio II</name> </author> <author> <name>Silva, Priscilla NL</name> </author> <author> <name>Fernandes, Dirceu M</name> </author> <author> <name>Lanna, Natália BL</name> </author> <author> <name>Colombari, Lidiane F</name> </author> <author> <name>Nakada-Freitas, Pâmela G</name> </author> <content type="html"> Cardoso, Antonio Ii; Silva, Priscilla Nl; Fernandes, Dirceu M; Lanna, Natália Bl; Colombari, Lidiane F; Nakada-Freitas, Pâmela G; ABSTRACT The utilization of organic fertilizer for a short cycle crop may allow planting, in sequence, another short cycle crop, without the need for new fertilizers, reducing the costs of a new fertilization. The objective of this study was to evaluate the residual effect of fertilization applied to broccoli with phosphorus sources in the presence and absence of organic compost, on beet and chicory production in subsequent cultivation. In broccoli cultivation, four sources of phosphorus (thermophosphate, natural phosphate, natural reactive phosphate, and triple superphosphate) (600 kg/ha of P2O5) were evaluated in the presence and absence of organic compost (Visafértil®, 55 t/ha) before planting. After the removal of the cultural remains of broccoli, beet and chicory, seedlings were transplanted in the same plots of the first crop treatments. For each species eight treatments were evaluated, in a 4 x 2 factorial scheme. The first factor were the four sources of phosphorus and the second one was the application or not of organic compost before broccoli (hybrid BRO 68) planting. Treatments with organic compost showed greater production of beet and chicory, compared to the absence of compost. Fertilization with organic compost associated to the phosphorus sources provides necessary residual effect to beet and chicory production. The best P source for beet was triple superphosphate, and for chicory, in the absence of organic compost, triple superphosphate was the best source. In the presence of organic compost, the best sources were triple superphosphate and natural phosphate.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Irrigation strategies with brackish water in the cultivation of Italian zucchini under potassium fertilization</title> <id>10.1590/s0102-0536-2024-e280253</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/KkVLgyJrG9sWYH8WQn3JDzy/?lang=en" /> <author> <name>Sousa, Geocleber G de</name> </author> <author> <name>Sousa, Henderson C</name> </author> <author> <name>Viana, Thales Vinícius de A</name> </author> <author> <name>Lessa, Carla Ingryd N</name> </author> <author> <name>Freire, Márcio Henrique da C</name> </author> <author> <name>Oliveira, Miriele S</name> </author> <author> <name>Leite, Kelly N</name> </author> <author> <name>Lopes, Fernando B</name> </author> <content type="html"> Sousa, Geocleber G De; Sousa, Henderson C; Viana, Thales Vinícius De A; Lessa, Carla Ingryd N; Freire, Márcio Henrique Da C; Oliveira, Miriele S; Leite, Kelly N; Lopes, Fernando B; ABSTRACT Zucchini may present different responses to the presence of salts in its phenological phases, and the supply of potassium can interfere with assimilate allocation dynamics, maximizing production. In this context, the aim of this study was to evaluate the effect of brackish water irrigation strategies at different phenological stages under potassium fertilization on the yield and quality of italian zucchini fruits. A completely randomized design was adopted in a 4 x 3 factorial scheme, with the application of different irrigation strategies (S1, S2, S3 and S4) based on crop phenology using two electrical conductivities (ECw) (W1: 0.3 dS/m; W2: 2.6 dS/m). (S1= W1 throughout the crop cycle; S2= W1 up to flowering and early fruiting, and W2 during the full fruiting and harvesting phases; S3= W2 during flowering and early fruiting, and W1 during full fruiting and harvesting; S4= W1 up to flowering and early fruiting, W2 during the full fruiting phase, and W1 during harvesting), with three potassium doses (K1= 0, K2= 7.5, and K3= 15 g/plant), and four replications. Saline stress at any stage reduces fruit quality, in addition to resulting in lower productivity and water use efficiency. Doses of 50 (K2) and 100% (K3) potassium provided lower productivity and water use efficiency. Further analyses and research are required to determine the ideal dose for crops under similar conditions of this study.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Stem diameter for Italian tomato grafting</title> <id>10.1590/s0102-0536-2024-e284802</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/CVz6swGcqKtH5Bxg9CpNbxN/?lang=en" /> <author> <name>Parajara, Magno do C.</name> </author> <author> <name>Oliveira, Fábio Luiz de</name> </author> <author> <name>Fontes, Paulo Cesar R</name> </author> <author> <name>Milagres, Carla do C</name> </author> <author> <name>Avelar, Felipe VR</name> </author> <content type="html"> Parajara, Magno Do C.; Oliveira, Fábio Luiz De; Fontes, Paulo Cesar R; Milagres, Carla Do C; Avelar, Felipe Vr; ABSTRACT The adoption of grafting in vegetable production is an innovative technique that presents challenges to be overcome, which one of the main ones is the need to determine the appropriate diameter of the plant at the time of grafting. Therefore, the objective of this work was to evaluate the development of seedlings and production of tomato plants, grafted with different stem diameters, under protected environmental conditions. The experiment was divided into two phases, seedling development and field production. The experimental design was completely randomized with five treatments, composed of the following seedlings stem diameters at the time of grafting: 1.8; 2.0; 2.2; 2.5 and 2.8 mm. Morphophysiological and productive characteristics of the grafted plants were evaluated. The results demonstrated that Italian tomato seedlings, grafted with 2.2 mm stem diameter, showed better development. However, the production rates were similar for the different stem diameters (1.8 to 2.8 mm) adopted at the grafting moment. Estimated yields of around 200 t/ha, much higher than the national average, demonstrate the success of the grafting technique in Italian tomatoes, under protected environmental conditions.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Adaptability and stability of sweet potato genotypes in Western São Paulo</title> <id>10.1590/s0102-0536-2024-e284621</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/c6WkLYM4K3Y9BThK6qknJJf/?lang=en" /> <author> <name>Perrud, Amanda C</name> </author> <author> <name>Zeist, André Ricardo</name> </author> <author> <name>Silva Júnior, André D</name> </author> <author> <name>Leal, Murilo Henrique S</name> </author> <author> <name>Pieri, Julia Roberta S de</name> </author> <author> <name>Rodrigues Júnior, Nilson</name> </author> <author> <name>Oliveira, Guilherme José A</name> </author> <author> <name>Garcia Neto, Jair</name> </author> <author> <name>Rech, Caroline</name> </author> <author> <name>Marian, Francieli</name> </author> <content type="html"> Perrud, Amanda C; Zeist, André Ricardo; Silva Júnior, André D; Leal, Murilo Henrique S; Pieri, Julia Roberta S De; Rodrigues Júnior, Nilson; Oliveira, Guilherme José A; Garcia Neto, Jair; Rech, Caroline; Marian, Francieli; ABSTRACT Sweet potato (Ipomoea batatas L.) have great genetic variability that contribute to higher production and root quality. Sweet potato farmers in the Western region of São Paulo state, Brazil, plant during the four seasons and have used the same genotypes for two decades. Thus, research is needed to evaluate new genotypes and indicate the most promising ones. Therefore, the objective of this study was to identify the adaptability and stability of sweet potato genotypes in six planting seasons: September 2019, January 2020, April 2020, September 2020, October 2020, and December 2020 in Western São Paulo using the linear regression methodology proposed by Eberhart &amp; Russell (1966) and the centroid method. We evaluated 17 genotypes, two experimental genotypes from the germplasm bank of the University of Western São Paulo and two genotypes that have been cultivated for more than two decades by farmers (Canadense and Ligeirinha Paulista). The results show that Canadense, IAPAR 69, and SCS 272 Marina can be considered widely adapted in the Western region of São Paulo (favorable and unfavorable environments). In turn, the genotypes UBD 01 and UBD 02 are indicated exclusively for unfavorable environments, while Ligeirinha Paulista, INIA Arapey, SCS 369 Águas Negras, BRS Rubissol, Brazlândia Branca, Brazlândia Roxa, and BRS Amélia are indicated for favorable environments.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Influence of nitrogen on bell pepper yield in open field conditions during autumn-winter</title> <id>10.1590/s0102-0536-2024-e285832</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/yQxPXGPc4DzrvWm3cQTdSKP/?lang=en" /> <author> <name>Vidigal, Sanzio M</name> </author> <author> <name>Moreira, Marialva A</name> </author> <content type="html"> Vidigal, Sanzio M; Moreira, Marialva A; ABSTRACT Nitrogen (N) deserves special attention in the fertilization recommendation for bell peppers, as it is the nutrient absorbed in greater quantity, standing out for the amount required and the functions it performs in the plant. The objective was to evaluate the influence of nitrogen applied as top dressing on bell pepper production in open field during the autumn/winter period. The experiment was conducted in Red-Yellow Argisol. A randomized complete block design with four replications was used. Treatments consisted of nitrogen rates applied as top dressing (0, 75; 150; 300; and 450 kg/ha). Nitrogen increased the number and fresh mass of fruits per plant. The SPAD Reading increased with the increment of nitrogen rates in the three evaluation periods and with the evaluation period. Bell peppers grown during the autumn/winter period showed high productive potential associated with nitrogen rates higher than currently recommended. The yield of marketable fruits increases until 214 kg/ha of N. The critical level for the SPAD reading varied with the age of the plants, with estimated critical values of 53.2, 66.5, and 61.9 at 35, 56, and 154 days after transplanting (DAT).</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Agronomic performance of tomato hybrids and inbred lines using vegetation indexes</title> <id>10.1590/s0102-0536-2024-e283120</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/yFkJSc9mNmDhMWp4rshrcPJ/?lang=en" /> <author> <name>Paiva, Thatiane de S</name> </author> <author> <name>Maciel, Gabriel M</name> </author> <author> <name>Siquieroli, Ana Carolina S</name> </author> <author> <name>Oliveira, Camila S de</name> </author> <author> <name>Peixoto, Joicy Vitória M</name> </author> <author> <name>Ribeiro, Ana Luisa A</name> </author> <author> <name>Andaló, Vanessa</name> </author> <author> <name>Assis, Pablo Henrique de S</name> </author> <author> <name>Miquicene, Felisberto V C</name> </author> <author> <name>Marques, Douglas José</name> </author> <content type="html"> Paiva, Thatiane De S; Maciel, Gabriel M; Siquieroli, Ana Carolina S; Oliveira, Camila S De; Peixoto, Joicy Vitória M; Ribeiro, Ana Luisa A; Andaló, Vanessa; Assis, Pablo Henrique De S; Miquicene, Felisberto V C; Marques, Douglas José; ABSTRACT Image phenotyping presents great potential for field experiment evaluations in tomato crop. Validating this method for tomato plants is important to reduce costs and time. Thus, the objective of the present study is to investigate the agronomic performance of tomato hybrids and inbred lines using vegetation index. A randomized block design with three replications was used. A total of36 experimental hybrids and 9 inbred lines were evaluated, in addition to the recurrent genitor UFU-57 and a commercial hybrid, culminating in 47 treatments. During the experiment, average weight, transverse and longitudinal diameter, pulp thickness, number of lobules, soluble solids, β-carotene and lycopene concentrations were evaluated. Moreover, the vegetative development of plants was analyzed utilizing vegetation index, obtained using remotely piloted aircraft. The data were analyzed using mean test and multivariate analysis. The results showed that vegetation index can distinguish hybrids from inbred lines and can be used to evaluate tomato germplasm in future phenotyping.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Aqueous extract of spent hops suppresses root-knot nematode and enhances soil biological activity</title> <id>10.1590/s0102-0536-2024-e282871</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/XRT3rZx7DSzkYCfgDnXbXGd/?lang=en" /> <author> <name>Toninato, Bruna O</name> </author> <author> <name>Calandrelli, Angélica</name> </author> <author> <name>Fontana, Lais F</name> </author> <author> <name>Dias-Arieira, Claudia R</name> </author> <content type="html"> Toninato, Bruna O; Calandrelli, Angélica; Fontana, Lais F; Dias-Arieira, Claudia R; ABSTRACT Hops are known worldwide for their medicinal and antimicrobial properties, but their applications have been little studied in the field of agriculture. Furthermore, there are few studies about the nematicidal effect of the generated hops residue by the brewing industry. This study aimed to evaluate the potential of a 5% aqueous extract of hops residues in controlling Meloidogyne javanica in tomato plants and assess its impact on soil biological activity. Two experiments were conducted at different times. In both experiments, tomato seedlings grown in pots in a greenhouse received an application of 5% sent hops extract or water (control), using a spray volume of 50 L/ha. The treatments were applied in a hole made in the soil, close to the root system of the plant, approximately 2 cm deep. Plants were then inoculated with 1,000 eggs + eventual second-stage juveniles (J2) of M. javanica/plant, depositing the suspension containing the nematodes in the same hole made in the soil. In the laboratory, in the first experiment, basal respiration, soil microbial biomass, and nematode reproduction were determined at 30 days after inoculation (DAI), and in the second experiment, M. javanica reproduction was evaluated at 30 and 60 DAI, while basal respiration and soil microbial biomass were evaluated at 60 DAI. In the first experiment, the extract reduced total nematode number and number of nematodes per gram of root by up to 70% and 82%, respectively. In the second experiment, the respective reductions were 71% and 83% at 30 DAI and 80% and 73% at 60 DAI. The results showed that, in general, soils under plants treated with spent hop extract had higher basal respiration and microbial biomass carbon in both years, even when infected with nematodes. Thus, hops extract demonstrates potential for use in the management of M. javanica. However, further studies are necessary to elucidate the modes of action against these phytopathogens and their effects on soil.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Successive vegetable intercropping in organic system: agronomic and economic performance</title> <id>10.1590/s0102-0536-2024-e286663</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/JnFKMpchNp6tcxftNFBKxtF/?lang=en" /> <author> <name>Parajara, Magno do C</name> </author> <author> <name>Oliveira, Fabio Luiz de</name> </author> <author> <name>Avelar, Felipe VR</name> </author> <author> <name>Oliveira, Lidiane dos SG</name> </author> <author> <name>Carvalho, Arnaldo Henrique de O</name> </author> <author> <name>Lima, Wallace Luis de</name> </author> <author> <name>Dalvi, Leandro P</name> </author> <content type="html"> Parajara, Magno Do C; Oliveira, Fabio Luiz De; Avelar, Felipe Vr; Oliveira, Lidiane Dos Sg; Carvalho, Arnaldo Henrique De O; Lima, Wallace Luis De; Dalvi, Leandro P; ABSTRACT Intercropping is a technique employed to increase productivity and profit per unit area in addition to maximizing the use of environmental resources and promoting ecological balance. Considering the advantages this practice can offer in vegetable cultivation, the present study aimed to evaluate the agronomic indices and profitability achieved through the cultivation of common kale intercropped with carrots and mustard in a crop succession system. The experiment was conducted using a randomized block design (RBD), with four replicates. The kale plots were arranged in a factorial scheme (2x2), considering: factor spacing for kale planting [E1 (1.00 x 0.50 m) and E2 (0.50 x 0.50 m)]; and the intercropping factor [presence and absence of intercropping (considering carrots first and then mustard)]. The carrot and mustard plots followed the RBD, with three cultivation systems (treatments): system 1 = monoculture; system 2 = intercropping with kale at E1; system 3 = intercropping with kale at E2. Throughout the kale cycle, carrots were replaced by mustard. The kale-carrot intercropping, succeeded by kale-mustard at the E1 spacing, showed good yield and land use efficiency of 184%, with greater profitability than monocultures. The kale-carrot intercropping, succeeded by kale-mustard at the E2 spacing, also showed agronomic efficiency (63%) and positive economic yield, but with lower profitability than monocultures.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Gas exchange and growth of bell pepper grown in different substrates under salinity stress</title> <id>10.1590/s0102-0536-2024-e288866</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/GnSVN7kD6X3CSCvbG3ykYyR/?lang=en" /> <author> <name>Oliveira, Francisco de A de</name> </author> <author> <name>Santos, Sandy T dos</name> </author> <author> <name>Melo, Mikhael R de S</name> </author> <author> <name>Oliveira, Mychelle KT de</name> </author> <author> <name>Travassos, Kaline D</name> </author> <author> <name>Sousa, Leonardo V de</name> </author> <author> <name>Pinto, Francisco FB</name> </author> <content type="html"> Oliveira, Francisco De A De; Santos, Sandy T Dos; Melo, Mikhael R De S; Oliveira, Mychelle Kt De; Travassos, Kaline D; Sousa, Leonardo V De; Pinto, Francisco Fb; ABSTRACT Physicochemical qualities of the substrate, such as moisture retention capacity and retention of exchangeable bases, enable better photosynthetic activity and plant growth gains in semi-hydroponic cultivation. The aim of this study was to evaluate the effect of different substrates on physiology and growth of bell peppers cultivated under salinity stress. The research was conducted in a greenhouse, in randomized block design, 3 x 4 factorial scheme, using three substrates [coconut fiber, sand, mixture (coconut fiber + sand (1:1)] and four electrical conductivity levels of the nutrient solution (2.2; 3.5; 4.5 and 5.5 dS/m), with three replications. At 72 days after transplanting, we evaluated gas exchanges in plants through stomatal conductance, transpiration rate, photosynthesis, water use efficiency and intrinsic water use efficiency. At 120 days after transplanting, the plants were collected and evaluated in relation to leaf dry mass, stem dry mass, fruit dry mass and total dry mass. Salinity stress affected gas exchange in bell pepper plants in all substrates, especially at higher salt levels. Coconut fiber provided better physiological and growth conditions for bell pepper grown under salinity stress. Bell pepper can be grown under salinity levels up to 3.5 dS/m using coconut fiber or the mixture of coconut fiber and sand (1:1) as substrates.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Production and quality of bell pepper fruits grown under saline stress in different substrates</title> <id>10.1590/s0102-0536-2024-e288947</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/mCzVtbHZKsttgHC7nLvCk3m/?lang=en" /> <author> <name>Oliveira, Francisco de A de</name> </author> <author> <name>Santos, Sandy T dos</name> </author> <author> <name>Melo, Mikhael R de S</name> </author> <author> <name>Oliveira, Mychelle KT de</name> </author> <author> <name>Pereira, Kleane TO</name> </author> <author> <name>Aroucha, Edna MM</name> </author> <author> <name>Almeida, José GL de</name> </author> <author> <name>Linhares, Paulo CF</name> </author> <content type="html"> Oliveira, Francisco De A De; Santos, Sandy T Dos; Melo, Mikhael R De S; Oliveira, Mychelle Kt De; Pereira, Kleane To; Aroucha, Edna Mm; Almeida, José Gl De; Linhares, Paulo Cf; ABSTRACT The aim of this study was to evaluate the salinity effect on the production and quality of bell pepper fruits (Capsicum annuum L.) grown in different substrates. The experimental design adopted was randomized blocks, in a 3 × 4 factorial scheme, with three substrates {coconut fiber, sand and mixture [coconut fiber + sand (1:1)]}, and four salinity levels of the nutrient solution (2.2; 3.5; 4.5 and 5.5 dS/m), with three replicates. The first fruit harvest was 60 days after transplanting (DAT) and the others weekly. The following variables were evaluated: number of fruits (marketable, unmarketable and total), average mass of marketable fruits, fruit production (marketable and total), soluble solid content, titratable acidity, soluble solids/titratable acidity ratio, vitamin C and fruit firmness. The largest fruit production occurred with coconut fiber (947.27 g/plant) and mixture (763.71 g/plant). The type of substrate has little influence on the quality of bell pepper fruits produced under salinity stress up to 4.5 dS/m. Coconut fiber and mixture are the most recommended substrates for bell pepper production under salinity stress up to 3.5 dS/m.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">In-depth analysis of ornamental pepper and pot volume interaction utilizing conventional and digital tools</title> <id>10.1590/s0102-0536-2024-e285735</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/jz5PjWgTwVxw8nmbFtD9Hsk/?lang=en" /> <author> <name>Cavalcanti, Thâmara FM</name> </author> <author> <name>Soares Filho, Eduardo S</name> </author> <author> <name>Araújo, Maria do Socorro B de</name> </author> <author> <name>Vieira, Cleiton V</name> </author> <author> <name>Sudré, Cláudia P</name> </author> <author> <name>Bispo, Rosimara B</name> </author> <author> <name>Rodrigues, Rosana</name> </author> <content type="html"> Cavalcanti, Thâmara Fm; Soares Filho, Eduardo S; Araújo, Maria Do Socorro B De; Vieira, Cleiton V; Sudré, Cláudia P; Bispo, Rosimara B; Rodrigues, Rosana; ABSTRACT Investigating the suitable pot size for cultivating ornamental plants is crucial for this market, impacting on aesthetic value, consumer preference and producers&#39; costs. The objective was to evaluate how the volumetric capacity of the pot affects the development and ornamental potential of four pepper genotypes from a UENF breeding program. Together with a commercial control, the genotypes were grown in 0.75, 2 and 5 dm3 pots in a greenhouse. The experiment was conducted in a split-plot design with three replications. A total of 29 plant, root, leaf and fruit descriptors were analyzed by counting, weighing and digital image analysis using ImageJ, Tomato analyzer and GiA Roots. The volumetric capacity of the pot influenced root and fruit development and plant structure. The physical restriction of space delayed flowering, reduced vegetative vigor and production of ornamental peppers. For the genotypes evaluated, the use of 2 and 5 dm3 pots is recommended, as they provide better plant growth and development. Digital image analysis helped to distinguish the phenotypes and to understand the effect of pot volume on plant development.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">Soaking time in sulfuric acid to overcome sweet potato seeds dormancy</title> <id>10.1590/s0102-0536-2023-e2560</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/dWhW4XDrXhj6zkz5zXP4yCG/?lang=en" /> <author> <name>Zeist, André Ricardo</name> </author> <author> <name>Carbonera, Maiara Z</name> </author> <author> <name>Rech, Caroline</name> </author> <author> <name>Oliveira, Guilherme José A</name> </author> <author> <name>Toroco, Bruno R</name> </author> <author> <name>Silva Júnior, André D</name> </author> <author> <name>Garcia Neto, Jair</name> </author> <author> <name>Leal, Murilo Henrique S</name> </author> <content type="html"> Zeist, André Ricardo; Carbonera, Maiara Z; Rech, Caroline; Oliveira, Guilherme José A; Toroco, Bruno R; Silva Júnior, André D; Garcia Neto, Jair; Leal, Murilo Henrique S; ABSTRACT To increase genetic variability, sweet potato needs to be sexually propagated in breeding programs. However, its seeds have a hard and thick integument, requiring some dormancy breaking method. Chemical treatment of seeds allows greater efficiency of the relationship between seeds obtained in crosses and those that germinate, providing genotypes to be tested for their potential, aiming at developing a new commercial cultivar. Thus, the objective of this study was to identify the effects of immersion times of seeds in sulfuric acid (98%) on the germination and initial growth of sweet potato seedlings. The seeds were immersed for five different times: 0 (control), 20, 40, 60, and 80 min. The experiment was carried out in a completely randomized design with ten repetitions consisting of 25 seeds each experimental plot. The germination percentage, germination speed index (GSI), dry mass of whole seedlings, and length of the largest root and shoot of the seedlings were evaluated. The germination percentage and GSI increased with immersion time until 53.30 min, with maximum estimated values of 85.39 and 25.10%, respectively. For the parameters dry mass of whole seedlings, length of the largest root, and shoot length, increases were observed up to 55.00, 37.63, and 44.44 min, respectively. In conclusion, the immersion of sweet potato seeds in sulfuric acid (98%) for 53 min is ideal for breaking dormancy and providing better conditions for the initial development of seedlings.</content> </entry> <entry xml:base="https://www.scielo.br/journal/hb/feed/"> <title type="text">BRS Araçari e BRS Biguatinga: Novas cultivares de pimenta habanero da Embrapa Hortaliças</title> <id>10.1590/s102-0536-2024-280540</id> <updated>2024-10-22T19:15:38.840000Z</updated> <published>2020-08-09T06:48:35.855000Z</published> <link href="https://www.scielo.br/j/hb/a/HtMPR6pZFN33MkvtYH4NKRc/?lang=pt" /> <author> <name>Ribeiro, Cláudia SC</name> </author> <author> <name>Soares, Renato S</name> </author> <author> <name>Carvalho, Sabrina IC de</name> </author> <author> <name>Nass, Luciano L</name> </author> <author> <name>Lopes, Carlos A</name> </author> <author> <name>Lima, Mirtes F</name> </author> <author> <name>Nagata, Alice KI</name> </author> <author> <name>Reis, Ailton</name> </author> <author> <name>Duval, Alice MQ</name> </author> <author> <name>Pinheiro, Jadir B</name> </author> <author> <name>Maldonade, Iriani R</name> </author> <author> <name>Hanashiro, Marcelo M</name> </author> <author> <name>Reifschneider, Francisco JB</name> </author> <content type="html"> Ribeiro, Cláudia Sc; Soares, Renato S; Carvalho, Sabrina Ic De; Nass, Luciano L; Lopes, Carlos A; Lima, Mirtes F; Nagata, Alice Ki; Reis, Ailton; Duval, Alice Mq; Pinheiro, Jadir B; Maldonade, Iriani R; Hanashiro, Marcelo M; Reifschneider, Francisco Jb; RESUMO O programa de melhoramento de Capsicum da Embrapa Hortaliças tem contribuído significativamente no desenvolvimento e disponibilização de cultivares de pimentas com diferentes níveis de pungência no mercado brasileiro, tendo como foco principal a resistência a doenças e frutos com qualidades industrial e nutricional superiores. As cultivares de pimenta habanero BRS Araçari e BRS Biguatinga foram desenvolvidas pela Embrapa Hortaliças visando tanto o mercado de frutos frescos como a indústria processadora de pastas e molhos. ‘BRS Araçari’ apresenta frutos de formato retangular, de coloração verde quanto imaturo e amarela quando maduro, com 4,3 cm de comprimento por 4,2 cm de largura e 1,8 mm de espessura de parede. Os frutos têm pungência média de 5.000 SHU (unidade de calor Scoville) e elevado conteúdo de vitamina C (177,4 mg/100 g). Os frutos de ‘BRS Biguatinga’ são de formato campanulado, forma típica das pimentas do grupo habanero, de coloração verde clara quando imaturos e vermelha quando maduros, com 6,6 cm de comprimento por 3,4 cm de largura e 1,9 mm de espessura de parede. A pungência média dos frutos é de cerca de 150.000 SHU, com 149 mg/100 g de vitamina C e 221 µg/g fruto de carotenoides. As duas cultivares são resistentes a doenças importantes que afetam a cultura da pimenteira e apresentam elevadas produtividade, uniformidade e qualidade de frutos, ademais, ambas as cultivares têm sido cultivadas com sucesso em sistemas de produção convencional e orgânico no Brasil. ‘BRS Araçari’ e ‘BRS Biguatinga’ foram registradas e protegidas pelo Ministério da Agricultura e Pecuária, e sementes comerciais da cultivar BRS Araçari estão sendo produzidas e comercializadas pela empresa Isla Sementes. Sementes básicas de ‘BRS Biguatinga’ estão sendo ofertadas ao setor produtivo por meio de Edital Público para interessados na produção e comercialização de sementes comerciais da referida cultivar.</content> </entry> </feed>

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