IMPACTOS DO SISTEMA DE CULTIVO MÍNIMO NA PRODUTIVIDADE DE GRÃOS DE MILHO FRENTE AO SISTEMA DE PLANTIO DIRETO

Abstract

The objective of this work was to verify the effects of the minimum cultivation system on corn grain productivity when compared to the direct planting system, after different soil covers. The experiment was conducted in the experimental field of the Chapadão Agricultural Research Support Foundation in the municipality of Chapadão do Sul – MS. The production components of the corn crop were studied: initial plant population, final plant population, final plant height, ear insertion height, stalk diameter, average ear length, average ear diameter, average cob diameter , average grain length, average number of rows of grains on the ear, mass of one thousand grains and grain productivity. The direct planting system affected the corn production components more, standing out as better management. Urochloa Ruziziensis and Crotalaria presented themselves as good options for soil cover prior to corn cultivation, as they do not differ statically. The average corn productivity was 9967.82 kg ha-1.