Influência da área de amostragem na determinação de perdas totais na colheita de soja

Abstract

The currently methodology used for the losses determination in the soybean harvest, that consists of the use of frames of 2m2, comes supplying resulted with high coefficient of variation, what it makes it difficult to detect significant differences between the treatments, exactly when this difference arrives to be almost the double of one for the other. In function of the related one above, this work had for objective to evaluate the effect of the frames on the quantification of the total losses in the harvest of the culture of the soybean (Glycine max (L.) Merrill), getting excited it speed of displacement of the harvester and the opening between the cylinder and the concaves. The used experimental design was randomized blocks, in factorial scheme 2x3x2, totaling 12 treatments with four repetitions. The results evidenced that the variation coefficient for the frame of 2 m2 was of 88.26%, while for the frame of 3 m2 this value was of 32.85%, and that with the frame of 2 m2 total losses of 45 kg ha-1 were detected, while with the one of 3 m2 73 kg ha-1 was quantified, it differentiates this significant one to 1% of probability for the Teste F, indicating that the area of the frames interferes in the quantification of the total losses in the culture of the soy.