2000
DOI: 10.1590/s0100-204x2000001000003
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Acumulação de biomassa, características fisiológicas e rendimento de grãos em cultivares de feijoeiro irrigado e sob sequeiro

Abstract: ACCUMULATION OF BIOMASS, PHYSIOLOGICAL CHARACTERISTICS AND GRAIN YIELD OF BEAN CULTIVARS UNDER IRRIGATED AND DRY REGIMESABSTRACT -In a field experiment, the vegetative growth and the grain yield of four common bean (Phaseolus vulgaris L.) cultivars were evaluated under irrigated or rainfed conditions, corresponding to total water levels of 252 and 123 mm, respectively. Leaf area and shoot biomass were weekly measured. The water stress reduced the shoot biomass, the leaf area index and the crop growth rate of a… Show more

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Cited by 32 publications
(28 citation statements)
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“…This result was probably due to an incomplete nodulation in the vegetative stage (Hungria et al, 2000), resulting in some samplings with lower TDW in the treatments that was only inoculation at sowing (I-25 and I). The treatment IF-25 presented significantly higher TDW than the others treatments in most samplings, with a peak at 70 DAE for all treatments during the grain filling stage in both years, in accordance with Gomes et al (2000). Therefore, the start dose of 20 kg N ha -1 at sowing in the dry season cultivation induced higher plant growth at initial developmental stages before the increase in BNF, as stated by Hungria et al (2003).…”
Section: Total Plant Dry Weight and Leaf Area Accumulationsupporting
confidence: 73%
“…This result was probably due to an incomplete nodulation in the vegetative stage (Hungria et al, 2000), resulting in some samplings with lower TDW in the treatments that was only inoculation at sowing (I-25 and I). The treatment IF-25 presented significantly higher TDW than the others treatments in most samplings, with a peak at 70 DAE for all treatments during the grain filling stage in both years, in accordance with Gomes et al (2000). Therefore, the start dose of 20 kg N ha -1 at sowing in the dry season cultivation induced higher plant growth at initial developmental stages before the increase in BNF, as stated by Hungria et al (2003).…”
Section: Total Plant Dry Weight and Leaf Area Accumulationsupporting
confidence: 73%
“…O número de vagens por planta foi maior no segundo ano experimental, independentemente do manejo de solo ou das doses de adubação nitrogenada. Segundo Gomes et al (2000), quando o feijoeiro é cultivado sob condições de sequeiro e com deficiência hídrica, o componente da produção mais afetado é o número de vagens por planta. Nos dois anos, houve redução da precipitação pluvial no mês de fevereiro, mais acentuada no primeiro ano, com volume total de 161 mm, que coincidiu com os estádios fenológicos de florescimento pleno e enchimento de vagens, porém sem comprometer o desenvolvimento do feijoeiro.…”
Section: Resultsunclassified
“…A produtividade de grãos do feijão também é influenciada pelo regime hídrico, o qual pode afetar o crescimento do sistema radicular e, conseqüentemente, a absorção e translocação de nutrientes (Gomes et al, 2000). Nos dois anos experimentais, o total de precipitação pluvial foi adequado para o desenvolvimento da cultura, contudo, nos meses de janeiro de 2003 e 2004, foi observada precipitação pluvial acumulada de aproximadamente 400 e 300 mm, respectivamente; ou seja, similar à lâmina de água que a cultura do feijão necessita para completar todo o seu ciclo e se desenvolver de forma satisfatória.…”
Section: Resultsunclassified
“…Contudo, a cultivar Pérola apresenta maior duração do ciclo e hábito de crescimen- , com acúmulo termal de 943 graus-dia. Os valores de massa de matéria seca total obtidos no final do ciclo situaram-se próximos aos observados por Gomes et al (2000), que, avaliando o acúmulo de massa de matéria seca produzida por cultivares de feijão Xodó e A320, de crescimento indeterminado, encontraram valores de 580 g m -2 e 600 g m -2 , respectivamente, e aos obtidos por Jauer et al (2003), para a cultivar Pérola (cerca de 693 g m -2…”
Section: Resultsunclassified