COLHEITA MECANIZADA DE SOJA EM FUNÇÃO DA PLATAFORMA DE CORTE EM ÁREA COM E SEM DESSECAÇÃO

Abstract

Soyabean harvest is the most importante step of the production cicle, practice that influences directly on the final crop yield, in a operation wich is accomplished on machines that has advanced tecnology. The objective of this presente work was evaluated the losts of grain in the mecanize soyabean harvest in area with and without desiccation, and harvesters with platforms cutting conventional and "draper". The experiment ws accomplished in the minicipality of Uirapuru - Goiás, in complety casualized design, 2x2 factorial scheme, being two harvesters with differents types of cutting plataform (conventional and “draper”) in two area treatments (desiccated and not desiccated) with 10 repetition in each treatment. Cutting platform losses, internal losses, total losses of the harvester were measured, harvester speed, grain moisture and fuel consumption of the machine. The harvesting operation in a desiccated area allowed for lower fuel consumption, making it possible to maintain the harvesting operation at a more uniform speed, in addition to providing lower internal losses in the harvester. Average losses on the platform, internals, and totals harvest of 13.09 kg ha-1, 5.30 kg ha-1 and 18.38 kg ha-1 were obtained, respectively. The harvesting operation in a desiccated area allowed for lower fuel consumption, making it possible to maintain the harvesting operation at a more uniform speed, in addition to providing lower internal losses in the harvester.