Soybean (Glycine max (L.) Merrill) response to biostimulant action - DOI: 10.4025/actasciagron.v28i2.1032

Abstract

Aiming to verify the effect of the bioestimulant, Stimulate^®, applied saw by seed and leaf pulverization, in the culture of the soybean. It behaved an experiment under greenhouse, in vases. Randomized block experimental design was used, with four repetitions. The treatments consisted of the combination of bioestimulant doses: seed application (SA) (0; 3; and 5 mL kg^-1 of seeds) in the sowing and leaf spray (LS) (0.0; 0.075; 0.150; and 0.225 mL L^-1), to the 58 days after the emergency (DAE). Collections of plants were accomplished to the 73 and 129 DAE. For some of the studied variables, in the used doses, there was negative effect in the response of the biostimulant application, for some tested doses. Positives responses were verified for flowers and roots dry mass; root/shoot relation; flowers; beans and grains number; and yield for plant. They stood out the treatments: 0,0 mL 0.5 kg^-1 (SA) + 0.150 mL L^-1 (LS); 3.0 mL 0.5 kg^-1 (SA) + 0.0 mL L^-1 (LS); 3.0 mL 0.5 kg^-1 (SA) + 0.225 mL L^-1 (LS); and 5.0 mL 0.5 kg^-1 (SA) + 0.075 mL L^-1 (LS).