Crescimento e partição de matéria seca de plantas de sorgo, feijão e algodão irrigadas com água salina.

Abstract

This work was carried out in a green house, aiming to evaluate the effect of salt stress on vegetative growth and dry mass partitioning of cowpea, sorghum, and cotton.. A completely randomized design, in a factorial arrangement (3 species x 3 salinity levels), with four replicates was adopted. The plants were irrigated with waters containing three different salt levels (0.5; 4.0 and 8.0 dS m-1). At 70 days after sowing, the plants were harvested to evaluate biomass production. Increase in salinity level of irrigation water reduced vegetative growth of the three species, being this effect more pronounced in cowpea and less pronounced in cotton plants. Salt stress also affected dry mass partitioning, especially in sorghum and cowpea plants.