Desempenho de cultivares de milho verde sob diferentes espaçamentos de semeadura em fileiras duplas

Abstract

Growing green corn is an outlet for income generation in the countryside. However, there are few studies directed to the cultivation of green corn. The objective of this work was to evalu-ate the productive and physiological performance of green corn cultivars, cultivated in differ-ent sowing densities. The experiment was conducted in the experimental area of the Federal University of Alagoas of the Arapiraca Campus, from November 2016 to April 2017. The experimental design was a randomized complete block design in a 2 x 5 factorial scheme with four replications. Test two crops indicated for green maize (AG 8677 PRO2 and BM 3061)and five plant spaces (20, 25, 30, 35 and 40 cm) in double rows. Agronomic evaluations (plant height, ear insertion height, stem diameter, length of ear with and without straw, ear diameter with and without straw, weight of ear with and without straw, weight of straw, percentage of straw, number of grains per row, number of rows, number of total grains per ear, percentage of commercial ears and total test) and physiological (net CO2 assimilation rate and stomatal conductance). The collected data were submitted to the analysis of variations through the statistical software Sisvar. The cultivar BM 3061 and the 40 cm plant spacing provide higher agronomic and physiological quality in the production of green corn ears.