Avaliação de cultivares de feijão (Phaseolus vulgaris L.) para o sistema orgânico de produção

Araujo, Jacqueline Camolese de

doi:10.11606/d.11.2008.tde-18082009-155405

Cited by 3 publications

(8 citation statements)

References 20 publications

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“…No significant differences were observed for number of pods on the main stem and 1,000-seed weight as a function of seed spacing, with average values of 7.70 and 219.93 g/1,000 seeds, respectively. This is because these traits are affected more by genetics (Araújo et al 2013) and environmental conditions (Arf et al 1996) than by management practices, particularly in terms of coefficients of variation for seed spacing. These results were confirmed by Hawerroth et al (2011), who found that the 1,000-seed weight is less correlated with yield than other variables, such as number of seeds per area.…”

Section: Resultsmentioning

confidence: 99%

Seed spacing variability reduces common bean yield

Bisognin

Pias

Vian

et al. 2019

Pesqui. Agropecu. Trop.

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An uneven seed spacing in the sowing row increases the plants intraspecific competition for environmental resources, potentially lowering grain yields. This study aimed to assess the yield and yield components of common bean plants, as a function of coefficients of variation (0 %, 20 %, 40 % and 60 %) of seeds in the sowing row. The main yield components, plant traits and grain yield were evaluated. The yield component that best explains the seed spacing variability on grain yield is the number of grains per plant (r = 0.94). Grain yield declines linearly as the seed spacing variability increases: 81.5 kg ha-1 (4.4 %) for every 10 % increase in the coefficient of variation. Thus, a less longitudinal seed spacing variability contributes to achieving higher grain yields.

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Section: Resultsmentioning

confidence: 99%

Seed spacing variability reduces common bean yield

Bisognin

Pias

Vian

et al. 2019

Pesqui. Agropecu. Trop.

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“…No cultivo de 2011, houve diferenças significativas apenas para o teor do macronutriente magnésio, quanto ao mé-todo de aplicação do fertilizante, sendo seu teor de 3,26 g kg -1 , quando aplicado a lanço. Os teores de magnésio do presente trabalho foram semelhantes aos verificados por Araújo (2008) (4,12 g kg -1 ; cultivar IAC-Votuporanga), em experimento de avaliação de cultivares de feijão em sistema orgânico de produção. Para os teores de K, Ca, Mg e S, em 2012, verificaram-se interações significativas entre época de aplicação e método de aplicação (Tabelas 3 e 4).…”

Section: Resultsunclassified

“…Araújo (2008), avaliando cultivares, obteve 15,57 vagens por planta, para a IAC-Tunã. Médias menores para essa característica foram relatadas por Carvalho & Wanderley (2007), que obtiveram 6 vagens por planta, para a cultivar Aporé, em cultivo orgânico.…”

Section: Resultsunclassified

“…Verificou-se, na plena floração do feijoeiro (09/08/2012), temperaturas máximas de 32,1 ºC e mínimas de 13,7 ºC, sendo muito próximas do limite e podendo ter influenciado negativamente os componentes de produção e produtividade. Araújo (2008) obteve produtividade média de 3.655 kg ha -1 , em sistema orgânico de produção do feijoeiro. Isso foi possível devido a algumas condições, dentre elas a temperatura média, que ficou em torno de 20-21 ºC, sendo altamente favorável ao desenvolvimento vegetativo e reprodutivo.…”

Section: Resultsunclassified

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Manejo da adubação na cultura do feijão em sistema de produção orgânico

Pereira

Arf

Santos

et al. 2015

Pesqui. Agropecu. Trop.

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Atualmente, os sistemas de produção de alimentos tendem a incluir manejos sustentáveis do solo e da água. Um dos principais desafios do cultivo orgânico do feijoeiro é o manejo da adubação. Este trabalho objetivou avaliar doses de fertilizante orgânico à base de resíduos de frigorífico (1,0 t ha-1; 1,5 t ha-1; 2,0 t ha-1; e 2,5 t ha-1). O delineamento experimental foi em blocos casualizados, em esquema fatorial 4x2x2, com 16 tratamentos e 4 repetições. Foram realizadas as seguintes avaliações: massa seca de plantas; diagnose foliar; população inicial e final de plantas; número de vagens por planta, grãos por planta e grãos por vagem; massa de 100 grãos; e produtividade de grãos. Concluiu-se que os métodos e épocas de aplicação do fertilizante orgânico não influenciam os componentes de produção e produtividade do feijoeiro. A dose de 2,5 t ha-1 de fertilizante orgânico propiciou a maior produtividade do feijoeiro em 2012, porém, não expressou sua capacidade máxima de produção.

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“…Genotypic differences in K-use efficiency are related to plants' uptake, transport, and use of this nutrient. The ability of the root system to acquire large amounts of K from the soil and translocate this nutrient to the shoots of plants plays a key role in improving the K-use efficiency of soybean genotypes [19]. Therefore, the use of soybean genotypes with a vigorous root system capable of extracting large amounts of exchangeable K from the soil, or roots with a greater capacity to solubilize non-exchangeable K from the soil through the exudation of organic acids, is fundamental for the sustainability of Brazilian soybean production systems [6,13,20].…”

Section: Introductionmentioning

confidence: 99%

Identification of Modern High-Yield Soybean Genotypes for Potassium-Use Efficiency in Sandy Soil of the Brazilian Cerrado

Gomides,

Leite,

Steiner

et al. 2023

Agronomy

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Soybean is the main leguminous crop in Brazil, mostly grown in tropical soils with low potassium (K) availability. Therefore, the identification of new genotypes with efficient K uptake and utilization in environments with low exchangeable K content is an economically viable alternative to maximize crop yield in Brazil. A study was conducted to investigate the response of 25 modern high-yield soybean genotypes for K-use efficiency in a sandy tropical soil of the Brazilian Cerrado. Treatments were distributed in a completely randomized design in a 2 × 25 factorial scheme: two levels of K fertilization [20 mg K dm−3 (low level) or 200 mg K dm−3 (high level)] and 25 soybean genotypes with three replicates. Plant morphological traits, leaf K, and crop production components were measured. Based on grain production data, K-use efficiency (KUE) and response efficiency (RE) to K fertilization were calculated. Leaf area, shoot dry matter, pod number per plant, 1000-grain weight, and grain yield were the crop characteristics most limited by low soil K availability. The soybean genotypes “TMG7061 IPRO”, “BMX Bônus IPRO”, “RK6719 IPRO”, and “RK8317 IPRO” were classified as efficient in the use of soil K and are the most suitable genotypes to be cultivated in agricultural soils with low K availability. The genotypes “98R35 IPRO”, “HO Maracaí IPRO”, “BMX Bônus IPRO”, and “RK7518 IPRO” were classified as responsive to K fertilization and are the most recommended genotypes for cultivation in agricultural areas with the application of high K fertilizer rates. The genotype “BMX Bônus IPRO” simultaneously combines characteristics of K-use efficiency and response to K fertilization and hence can be grown in both K-deficient and optimal soils.

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Avaliação de cultivares de feijão (Phaseolus vulgaris L.) para o sistema orgânico de produção

Cited by 3 publications

References 20 publications

Seed spacing variability reduces common bean yield

Seed spacing variability reduces common bean yield

Manejo da adubação na cultura do feijão em sistema de produção orgânico

Identification of Modern High-Yield Soybean Genotypes for Potassium-Use Efficiency in Sandy Soil of the Brazilian Cerrado

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