Desempenho de cultivares de soja convencional, Round up Ready® e Intacta RR2 IPRO®, em dois municípios de MT

Abstract

Soybean [(Glycine max (L.) Merril] is one of the most commercially important crops in Brazil and in the world, requiring constant studies and research focused on this crop, in order to obtain cultivars with the best agronomic performance, stability and grain productivity. In this context, genetic improvement companies are constantly seeking productive gains that, combined with good management practices, tend to provide greater economic returns to rural producers. Even after the commercialization of cultivars, there is still a need for tests "in loco" to observe potential gains from adaptability in each microregion. Therefore, the present work aims to analyze the productivity of cultivars and their respective agronomic characteristics, in two environments, so that the best indication of use can be provided. The evaluated soybean cultivars were: 8473-RSF Desafio, 8579-RSF IPRO Bônus, Ansc 83022, M 8372 IPRO, NS 7901 RR and TMG 4377. The experimental design was randomized blocks, with four replications, in an 8x2 factorial scheme. Evaluations of plant population, productivity, mass of 1,000 grains, plant height and insertion of the first legume (cm) were carried out. The cultivars 8473 RR Desafio, 8579RSF IPRO Bônus, ANsc 83022 and NS 7901 RR were the most productive in the municipality of Sinop. In Sorriso, the cultivars NS 7901 RR, ANsc 83022 and 8579RSF IPRO Bônus were the cultivars that stood out in productivity. Among the evaluated cultivars, 8579RSF IPRO Bônus was the one that obtained similar results in both locations, indicating adaptability to both locations. Regarding conventional cultivars, ANsc 83022, presented similar results to other technologies, showing that it can be a good economic alternative. Among the cultivars with RR technology, 8473 RR Desafio and NS 7901 RR showed good yields in Sinop and Sorriso. For Intact technology (IPRO) if.