Avaliação do efeito de lâminas de irrigação em duas cultivares de alface crespa.

Abstract

The present work was intended to evaluate the effect of irrigation depths on the development of crisped lettuce, in protected environment in the region of Lavras (MG). The experiment was set up in greenhouse with randomized block design in 2 x 4 factorial scheme, with four replicates. The treatments consisted of two lettuce cultivars, Verônica and Hortência, and four irrigation depths, 75, 100, 125 and 150% of water replacement. The results enabled to conclude the two cultivars of lettuce presented the same trend as regards water consumption throughout production cycle; higher fresh mass (total and commercial), plants with higher number of leaves and higher fresh mass of leaves were obtained with the application of the irrigation depth of 240 mm (121.2% of water replacement); the dry matter content of leaves reduced linearly as related with the water depths applied.