Influência do vigor inicial e do tempo de armazenamento na qualidade fisiológica de sementes de soja tratadas industrialmente

Abstract

The physiological seeds performance may be influenced by several factors, including the storage, the initial seed quality of the lot and the chemical to which it is treated. The objective of this work was to evaluate the physiological seed quality of two soybean cultivars submitted to storage after industrial treatment. The experiment was conducted at Fazenda Sperafico in the 2014/2015 harvest, in Sapezal, Mato Grosso. The experimental design was completely randomized, with treatments arranged in a factorial: 2 levels of vigor (high and low) in four evaluation periods (0, 20, 40 and 60 days) with three replications per treatment. The data were submitted to analysis of variance and afterwards, with significance for the interaction of the factors, the correlation between Tukey's test for factor strength levels and polynomial regression for the factor evaluation period was performed. 5% probability. Based on the tests carried out, it can be concluded that in both cultivars, when using seeds of high vigor, they do not suffer decreases in their vigor and germination levels, both in controlled environment and in emergencies in soil during the storage period. When seeds were used with low vigor, they were reduced in their vigor and germination levels in both cultivars, in both tests, after 40 days of storage.