Performance of treated seeds of different soybean cultivars in function of environments and storage periods

Abstract

The objective of this study was to evaluate the performance of seeds of different soybean cultivars treated in function of environments and storage periods, at Alto Garças, State of Mato Grosso, Brazil. The experimental design was completely randomized in 2 x 5 x 6 factorial design (controlled temperature and RH conditions, 10 ºC with 50% RH and at room temperature) five storage periods: 0, 2, 4, 6, and 8 months; seeds from six soybean cultivars (TMG 1176, TMG 1179, TMG 115, TMG 132, TMG 133, and GB 874) were used for the following determinations: germination, accelerated aging, electrical conductivity, cold test, and seedling emergence. Seeds of soybean cultivars treated with insecticide (Imidacloprid + Thiodicarb) and fungicide (Carboxin + Thiram) stored under controlled temperature and relative humidity conditions maintain the physiological quality for eight months of storage. At room temperature conditions storaged at Alto Garças, MT, the deterioration rate of seeds treated with insecticide (Imidacloprid + Thiodicarb) and fungicide (Carboxin + Thiram) is accentuated after six months of storage.