PERDA DE PRODUTIVIDADE NA COLHEITA DE SOJA

Abstract

Soy (Glycine max) is one of the main crops produced in Brazil, ranking first when it comes to oilseeds. To optimize your production it is necessary to avoid losses in the harvesting process. Mechanized harvesting has brought about an evolution in agriculture, making it possible for grains to be harvested more efficiently, speeding up the transport and storage process, but these losses are inevitable. Most of the quantified losses are due to the action of the harvesters' cutting platform, but losses also occur due to the early opening of the pods. On average, 85% of these losses are defined as mechanical and the rest as natural. The high humidity of the grains is a factor that induces losses, due to the delay in the beginning of the harvest and the grain is not fully able to pass through the trail system of the harvester. Embrapa has developed a method for determining losses, using a 2 m² frame, data is collected in this representation of the area and counts the grains lost in a volumetric cup that determines the loss in bags per hectare. The objective of this work was to quantify the existing losses in a frame of 2 and 4 m², evaluating by the method of the loss measuring cup and the scale. It was observed that the treatments did not show statistical differentiation, both for the lengths and for the evaluation methods.