Avaliação de perdas em uma colhedora de soja em função de regulagens no sistema de trilha e velocidades de deslocamento.

Abstract

The Brazilian soybean production has grown in the last years in productivity and in planted area and these increases had started to demand greater quality and rapidity in the harvesting, that when carried through improperly, causes considerable losses, diminishing the productivity. The present work has as objective the losses quantification in the soybean mechanized harvesting in function of the displacement’s speed and threshing system regulations (threshing drum-concave). The experimental delineation was randomized block, in factorial assay, with three displacement’s speeds (3,0; 3,7 and 6,0 km.h-1) and two concave clearance between the threshing drum and concave (40 and 29 mm), with four repetitions. It was verified that significant differences for header losses in function of the harvesting speed had not occurred. It was observed that if varying the concave clearance between the threshing drum and concave in each displacement’s speed, had occurred significant differences, with bigger losses for the lesser concave clearance in the lesser speed.