Produtividade de cultivares de soja submetidas a diferentes densidades no município de Belterra, Pará

Abstract

The soybean crop stands out for its socioeconomic importance and wide range of products from its grains. The objective of this work was to evaluate the productivity of soybean crop varieties submitted to different sowing densities. The experiment was conducted in the agricultural years 2020/2021. The experimental design was in Random Blocks (DBC), with two treatments and four replications for each variety, the varieties selected for this study were: Brasmax focus, TMG 2379, Brasmax ultra and NS 7700, with sowing performed via direct seeding system, using a 14-line seeder/fertilizer. The productivity variables evaluated were number of grains in 10 plants; grain mass in 10 plants; thousand-grain weight and productivity. Even without a significant difference at the 5% level, the variety with the highest productivity was Brasmax Ultra, with an average productivity of 4.9 ton ha-1 (81.72 bags ha-1) in T2 with a stand of 12.80 plants per linear meter, followed by the same variety with T1 showing an average productivity of 4.82 ton ha-1 (80.44 bags ha-1) with a stand of 11.30 plants per linear meter.