GROWTH AND PRODUCTION EFFICIENCY OF THE COMMOM BEAN SUBMITTED TO WATER RESTRICTION

Abstract

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 dm3 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.