Produtividade de genótipos de milho em condições de cultivo em sequeiro e irrigado

Abstract

The objective of this work was to evaluate the irrigation response on two maize genotypes grown in two cultivation conditions in the 2015/2016 harvest. The research was carried out in the experimental area of Irrigation of the Universidad Federal da Grande Dourados, in the city of Dourados - MS. The experiment was conducted in a randomized complete block design with factorial 2x2 with 4 replicates, totaling 16 plots. As the crop conditions (irrigated and dry), factor 1 and cultivars (PRO and PRO 3) were the factor 2. Irrigation management was carried out based on the climatological water balance. The evaluated parameters were leaf area, dry matter, plant height, spike insertion height, yield and grain mass per spike. The leaf area and dry matter increased until reaching a peak in 67 DAS, both after reaching the peak began to decline. Plant height at harvest there were significant differences between cultivars. The spike insertion height did not yield significant results. Productivity did not show statistically significant results, despite the discrepancy between irrigated crop values. The grain mass per spike did not obtain significant results between the cultivars and the crops. The harvest had a good rainfall distribution, although there were small water deficits during the cropping periods, with this it was observed that there was difference in plant height and yield with PRO 3 farming in the irrigated crop.