Época de colheita : efeito sobre a qualidade sanitária e física de grãos de soja

Abstract

Soybean is the main crop in the state of Mato Grosso, and may suffer significant loss of production and physical grain quality due to delay in harvest, as a result mainly of infestation by pathogenic microorganisms. Therefore this study evaweted the effect of three harvest seasons of 7 cultivars crops (Monsoy 6972 IPRO, Monsoy 7110 IPRO, Nidera 7901 RR 1180 RR TMG, TMG 2181 IPRO, TMG 2183 IPR, TMG 132 RR) and TC-2 strain 32,720 in sanitary and physical quality of the grain. The harvest was carried out by the Fundação Mato Grosso according to the cycle of each cultivar and samples sent for analysis of health and physical quality, assessing incidence of field fungi and post-harvest pathogenic fungi, thousand grain weight, bulk density, unit density, volume, surface area, geometric diameter, sphericity and circularity. The results were submitted to analysis of variance and significant when the averages were compared by Tukey test at 5% probability. The main fungi found: Colletotrichum sp .; Cercospora spp .; Fusarium sp .; Phomopsis sp .; Aspergillus sp .; Penicillium sp. and Rhizopus sp. The bulk density, thousand grain weight and volume showed a higher susceptibility to change according to weather conditions at the time of harvest in order to present in general the first time with better results.