Efeito da deficiência hídrica no desenvolvimento da cultura do milho em diferentes texturas de solo.

Abstract

ABSTRACT: This work had as objective to evaluate the growth of the plant of the maize submitted to the terminal hídric deficit in ground of different texture. The experiment was lead in the experimental area of the laboratory of ambient sciences of the course of Agricultural Engineering of the UNIOESTE, having used itself a set of eight filled lisimeter of draining with ground of sand texture (Arenito Caiuá) and clay (Latossolo Bruno Distrófico) and protected of precipitations. The experimental delineation entirely was random with two manage of irrigation water (irrigated and applied terminal hidric deficit during I serve as apprentice it of vegetative development). Parameters that had been evaluated: leaf area, senescence and elongation of leaf. The joined results had been submitted to the analysis statistics through Test-T for the comparison of measured them. The differences between averages had been compared by the test in level of significance of 5%. The leaf area of the maize plants was bigger in ground of sand texture from that in ground of argillaceous texture, for one same depth of the ground, to put the cultivated plants of maize in ground of clay texture had suffered little with the intensification from the hidric deficit.