Qualidade fisiológica de sementes de soja salvas e certificadas em resposta ao tratamento químico com o uso de promotores do crescimento

Abstract

The maintenance of the vigor of the seeds guarantees adequate stand of the crop, less number of failures, reduction of replanting and consequently obtaining high agronomic performance. Therefore, the objective of this study was to evaluate the storage conditions of certified and saved seeds and their influence on the vigor and agronomic efficiency of products applied via soybean seeds (Glycine max L. Merril). The study was carried out in field in the city of Paiçandu /PR with the cultivar Monsoy 6210 IPRO. The design was completely randomized, in a 2 x 4 factorial scheme, with four replications. The treatments consisted of two soybean origins (certified - ideal storage conditions - and saved - seeds stored on the farm), and four seed treatments using combinations of insecticide, fungicide, foliar fertilizer and biostimulant. The analyzes were performed immediately after the treatment to monitor the physiological quality of the seeds, by means of germination tests, accelerated aging 42 ° C for 48 hours, electrical conductivity test and sand emergency test. Certified seeds were higher than those saved in all variables. The treatment containing insecticide, fungicide and ACA Plus presented the best results.