INFLUENCE OF BIOREGULATORS ON THE DEVELOPMENT AND PRODUCTIVITY OF THE PEANUT CROP

Abstract

The peanut (Arachis hypogaea L.) is a legume of high economic and agronomic value, especially in rainfed agricultural systems, where strategies that optimize physiological and productive performance are essential. The aim of this study was to evaluate the effects of different doses of the biostimulant Stimulate, applied via foliar spraying, on the development and productivity of the BRS 421 OL peanut cultivar, in the Nova Alta Paulista region, in the municipality of Parapuã - SP. The experiment was conducted between August 2024 and July 2025, in a completely randomized design, with five treatments (0, 250, 500, 750 and 1000 mL ha-¹ of Stimulate) and six replications. Four consecutive weekly applications were made from the V5 stage onwards. The variables analyzed included weight with husk, weight without husk, losses per 25 kg bag and the commercial standard of the grains. The doses of 250 and 500 mL ha-¹ stood out significantly compared to the control, with the highest average yield values. The percentage of losses per bag and the standard of the grains showed no significant differences between the doses of biostimulant. Regression analysis showed an increase in productivity and a decrease in the percentage of loss per bag up to the 500 mL ha-¹ dose of Stimulate. The phytoremediator is an efficient alternative for increasing peanut productivity under rainfed conditions, contributing to more sustainable and technified practices in the crop.

DOI: 10.56238/edimpacto2025.051-010