Avaliação de cultivares de soja enlist na primeira e segunda safra de 2023/24

Abstract

Soybean cultivation has been intensified among producers, as herbicide resistance and practices reduce costs and increase yield without the excessive use of pesticides. With these factors in mind, this study evaluated ten and nine Enlist soybean cultivars in the first and 2nd summer harvest of 2023/24. The experiment was conducted at the experimental farm of UTFPR campus Dois Vizinhos, in a randomized block design with three replications. All cultivars showed selectivity to the herbicides 2,4-D and glufosinate ammonium. Productivity in the 1st summer harvest was higher than in the 2nd summer harvest, possibly explained by better soil and climate conditions. The cultivars presented similar number of pods and number of grains, with TGW differing in both harvests. In the 1st summer harvest, cultivars C2531 and B5540 stood out from the others. This superiority, however, was not enough to differentiate productivity, with only cultivar B5595 showing lower productivity than B5540 and C2531. The difference in productivity between the most and least productive cultivars was 1,408 and 859 kg ha-1, respectively, for the 1st and 2nd summer harvests, demonstrating the importance of making local assessments to understand the genotype-environment interaction of the materials.