Crescimento e rendimento produtivo do feijoeiro submetido à restrição hídrica
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Data
2013-07-22
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Engenharia na Agricultura
Resumo
A cultura do feijoeiro é afetada pelas condições climáticas, sendo o desenvolvimento das plantas influenciado pelo estresse hídrico. Um dos modos de se suprir as necessidades das plantas é por meio da irrigação. Dessa forma, buscou-se investigar neste trabalho o crescimento vegetativo e o rendimento produtivo do feijoeiro submetido à restrição hídrica durante o seu ciclo. Para esta finalidade, plantas de feijoeiro cultivar Manteiga foram cultivadas em vasos de 5 dm3 e submetidas aos tratamentos de 50 e 100% da capacidade de campo. Os parâmetros analisados foram: altura da planta, área foliar, número de nódulos do sistema radicular, matéria seca da parte aérea, da raiz e total, massa seca de grãos e número de grãos e de vagens. De acordo com os dados obtidos, foram determinados os seguintes índices de crescimento: incremento de matéria seca total, do caule, da folha, e da raiz. O experimento foi realizado em casa de vegetação, no Campus da Universidade Federal de Viçosa, disposto num delineamento experimental de blocos casualizados, em esquema de parcelas subdivididas no tempo, com quatro repetições. Os resultados obtidos mostraram que houve um menor crescimento vegetativo e menor rendimento produtivo nas plantas submetidas à restrição hídrica, imposta pelo tratamento de 50% da capacidade de campo, evidenciando a necessidade do controle adequado de água no solo como estratégia de manejo adequado para a produção.
The bean crop is affected by climate conditions, where plant development is influenced by water stress. One of the ways to meet the needs of the plant is through irrigation. Thus, in this work we sought to investigate the vegetative growth and production yield of the bean subjected to water stress during its cycle. For this purpose, beans of the cultivar Manteiga were cultivated in 5 dm 3 pots and subjected to treatments of 50 and 100% field capacity. The parameters analyzed were: plant height, leaf area, number of root nodules, dry weight of the shoots, roots and total, dry mass of the grains and grain number and grain yield. According to the data obtained the following growth indexes were determined: increase of total dry matter and that of the stem, leaf and root. The experiment was conducted in a greenhouse at the Federal University of Viçosa, arranged in a randomized complete block design in a split-plot in time, with four replications. The results showed that there was lower vegetative growth and lower production yield in plants subjected to water restriction, imposed by the treatment of 50% field capacity, indicating the need for adequate control of soil water management as a suitable strategy for production.
The bean crop is affected by climate conditions, where plant development is influenced by water stress. One of the ways to meet the needs of the plant is through irrigation. Thus, in this work we sought to investigate the vegetative growth and production yield of the bean subjected to water stress during its cycle. For this purpose, beans of the cultivar Manteiga were cultivated in 5 dm 3 pots and subjected to treatments of 50 and 100% field capacity. The parameters analyzed were: plant height, leaf area, number of root nodules, dry weight of the shoots, roots and total, dry mass of the grains and grain number and grain yield. According to the data obtained the following growth indexes were determined: increase of total dry matter and that of the stem, leaf and root. The experiment was conducted in a greenhouse at the Federal University of Viçosa, arranged in a randomized complete block design in a split-plot in time, with four replications. The results showed that there was lower vegetative growth and lower production yield in plants subjected to water restriction, imposed by the treatment of 50% field capacity, indicating the need for adequate control of soil water management as a suitable strategy for production.
Descrição
Palavras-chave
Phaseolus vulgaris, Déficit hídrico, Análises de crescimento, Produção