Aplicação de bioestimulante na cultura da soja (Glycine max) no tratamento de sementes

Abstract

Since Brazil is the biggest soybean producer (Glycine max) in the world, it is essential to keep improving such production. Therefore, one alternative is applying bio stimulant products when treating seeds. The present study aimed at establishing the ideal dosage for soybean cultivation and observing the differences between seeds treated with bio stimulant and non-treated seeds. The experiment was done in a laboratory and a green house, at Fortgreen Company, in Paiçandu, Paraná. The delineation used was DIC (delineation entirely unsorted), with four repetitions in each test. The seeds were submitted to germination pattern test, accelerated aging test, plants performance and emergence on sand box, obtaining vigor results and germination through counting of normal plants, root length and aerial part. The bio stimulant dosages used were 1, 1. 5, 2, 2.5, 3 e 3.5 mL.kg-1/seeds, tally 7 treatments. The number 6 treatment (dose 3,0 mL.kg-1) obtained satisfactory results, presenting bigger plantlet length and bigger tolerance to stress when compared to the testifier and the other treatments, assuring that the use of bio stimulant brings positive effects during the early stage of soybean cultivation.