Plantabilidade e produtividade de milho em função de formas de manejo de palha

Abstract

The present study compares the sowing parameters and yield of the corn crop, according to the technic of handling black oats. The design used was a randomized block, divided in parcels, with four replications per treatment. The treatments consisted of three haulm managements (dissected, rolled and crushed), carried out 20 days before the corn sowing. In each parcel, a useful area of 10 meters in length was delimited by three central sowing lines, where the evaluations of the productivity characters were carried out. The experiment was conducted in the 2018/2019 agricultural year, carrying out all the necessary cultural treatments for the full development of the crop. The results were submitted to analysis of variance and tests of means. Rolled management had a mass of one thousand grains higher than crushed management, with the dry management not differing from the other managements. The dried management showed higher dry matter of straw when compared to the crushed management, whereas the rolled management did not present significant difference when compared with the other managements. In desiccated management, the emergence velocity index was lower than the other treatments. The different management of the straw did not cause significant difference in the sowing depth, initial plant stand and in the final crop productivity.