Analise da qualidade de sementes de soja: Efeito da presença e ausência de inoculantes

Abstract

The quality of seeds is of paramount importance for the good development of the plant. However, some factors such as nitrogen fixation are limiting and, therefore, must be considered in order to increase crop productivity and this can be done from the seed inoculation process. Knowing the importance of using inoculants to increase nitrogen fixation and, therefore, soybean crop production, this study aimed to evaluate the quality of seeds of soybean varieties with and without inoculants. The research was conducted at the Seed Analysis Laboratory (LAS) of the Department of Plant Science and Environmental Sciences at the Federal University of Paraíba. In the experiment, three cultivars were used: Brasmax Domínio, M 8349 and Brasmax Extrema, using trays with 4 replications of 50 seeds, totaling 200 seeds per treatment and throughout the experiment 800 seeds were used. The variables analyzed were: first count test (TPC), emergence (EME), emergence speed index (IVE), root green mass (MVR), root dry mass (MSR), shoot green mass (MVPA ), shoot dry mass (MSPA), root part length (CPR) and shoot length (CPA). Data were subjected to analysis of variance and, when significant, submitted to Tukey's test. According to the results obtained, it was observed that the cultivar M 3849 presented better results for the evaluated parameters when they were not treated with inoculant, that is, the technique did not induce greater positive effects for it. The use of inoculants, depending on the cultivars and the conditions to which they are submitted, may not interfere with the seed quality evaluation parameters.