Controle foliar de doenças e seu efeito na produtividade e qualidade de grão de soja

Abstract

In general, soybean is infected by numerous diseases in the field, which can interfere with productivity. Aiming to increase productivity with quality has been invested in new technologies, such as the induction of resistance in plants, which makes the plant recognize the pathogen and develop defense mechanisms. Thus, the objective of this study was to evaluate the influence of resistance inducer on yield and soybean grain quality (Glycine maxL.), evaluating productivity, physical, physiological quality and post-harvest health. For this, the cultivar Monsoy 8372 IPRO submitted to the application of the treatments: Test Product at the dosages of 0,5, 1,0, 1,5 and 2,0 L ha-1, Bion 500 WG® 25 g ha-1, the Standard of the Producer and the Control - without application of fungicide. The experimental design was in randomized blocks, with 7 treatments and 4 replications, totalizing 28 plots. The grain quality was determined by means of physical properties: specific and unit specific mass, variables of size and shape, that did not present statistical difference between treatments, and a thousand grain mass that presented statistical difference. For the physiological property, the germination was evaluated, which presented a statistical difference between the treatments. In the evaluation of the sanity, regarding the infection by phytopathogens, presented a high incidence of Fusarium spp. Cercospora spp. Phomopsis spp. in all treatments. In the productivity (sc ha-1) the treatments with best result was the Standard of the Producer andProduct test in the dose of 1,0 L ha-1.