Qualidade física e sanitária de soja armazenada em diferentes modelos de silo bolsa

Abstract

Brazil has difficulties in relation to the static storage capacity of grains, which is lower than production. As a result, alternative storage systems, such as the bag silo, have an important logistic role. The objective of this study was to evaluate the physical and sanitary quality of soybean grains stored in bag silos of different types of canvas. The experiment was carried out in Sinop-MT, in a storage unit. The sanitary quality was evaluated periodically by the "Blottertest" method, up to 110 days of storage. The other qualitative analyzes (moisture content, germination and grain classification) were followed for 124 days of storage. The evaluations occurred in three models of bag silos: i) Silo 1: three layers of canvas, all in white; ii) Silo 2: two inner layers in black and one outer in white; and iii) Silo 3: three layers of white canvas and 70% shade cover. There were large variations in water content, mainly in the upper part of the silos, in addition to a significant decrease in physiological quality. By grain classification, there was an increase in the percentage of fermented and burned, regardless of the inner layer of the silo. The results of the analysis of the detection of associated fungi showed a tendency to increase the incidence of fungi Penicillium spp. and Aspergillus spp. over time and, decrease of Fusarium spp., in all silos.