Desempenho do milho (Zea mays L.) e perdas na colheita mecanizada em função do manejo da cultura de cobertura e população de plantas.

Abstract

The present work evaluated parameters of development, harvesting losses and productivity of one to cultivate corn hybrid in function of the handling of the culture of covering of the soil (herbicide, rotary mowers and straws grinder) and initial population of plants (55,6, 60,6 and 67,9 a thousand plants ha-1), totalizing 9 treatments with 4 repetitions. One evaluated it height of the plants, height of the insertion of the spike, diameter of stem, losses in the mechanized harvest, final population, productivity, flow of grains, flow MOG and total flow in the harvester. The handling with herbicide and rotary mowers had provided to greaters values in the changeable final population of plants. The two lesser initial populations and the handling with the rotary mowers had provided to greaters heights of plants. The initial population of 60,6 a thousand seeds ha-1 resulted in the biggest final population of plants, of 55.555 plants ha-1. The losses in the harvester and the grain, MOG and total flows had not suffered to influence from the handling or populations.