Frequency and levels of irrigation in dry beans during winter season

• Autor(a) principal: Silveira, Pedro Marques da
• Data de Publicação: 2014
• Outros Autores: Steinmetz, Silvio, Guimarãe, Cleber Morais, Aidar, Homero, Carvalho, José Ruy Porto de
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Agropecuária Brasileira (Online)
• Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/15390
• topic: Phaseolus vulgaris L.; yield, roots; irrigation; Phaseolus vulgaris L.; irrigação; rendimento; raízes

An experiment was carried out to evaluate the effect of frequency and levels of irrigation on yield and agronomical characteristics of dry beans (Phaseolus vulgaris L.) cultivar CNF-0010. The study was done at CNPAF-EMBRAPA, Goiânia, GO, under field conditions, using a moveable "rainshelter", during the winter season of 1982. The irrigation treatments were 2, 4, and 6 mm/day at 1, 4, 7 and 10 day intervals. Multiple regression equations were developed among the irrigation treatments, grain production and root density. Grain production was affected more by the levels of irrigation (R2 = 85.33%) than by the frequency (R2 = 5.86%). Higher grain yields were obtained with increased irrigation levels. Grain production decreased linearly with increase in irrigation intervals only when 4 and 6 mm/day of water were applied. At the level of 4 mm/day the highest root density was obtained. The amount of water used, on an average, was 173, 295 and 411 mm for the 2, 4 and 6 mm/day treatments, respectively.