Perdas quali-quantitativas de sementes de soja colhidas sob três velocidades de operação e rotações do cilindro de trilha.

Abstract

The mechanical harvest is an important tool in the productive process of the grain crops, if not used appropriately; it can result in severe mechanical damages to the seed, carring out, damages to the crop especially on seed quality. In order to evaluate the damages caused by mechanical soybean harvesting, the purpose of the present studies was to study the effect of the system of axial trail on the percentage of bands, the amount of MOG (material other grain) and broken seeds of soybean, in function of the speed of work and of the rotation of the threshing cylinder. The used experimental design was completely randomized in split plot, arrangement, being evaluated two rotations of threshing cylinder, three operation speeds with three repetitions. The results obtained showed that the combinations of speed operations and rotation of threshing cylinder evaluated did not affect the seed vigor, impurity, bands, sand emergence and germination speed index and that on rotation of 400 to 500 rpm increased broken seeds.