Influência de bioestimulantes e reguladores de crescimento na produtividade do feijoeiro comum

Abstract

Brazil is one of the largest producers of beans in the world, the grain being a staple of the Brazilian diet and an important source of protein for the population. Due to population growth, the demand for this food increases. In this sense, the use of growth regulators may be a possibility to increase bean productivity. The application of these substances can accelerate the development of plants in the field and ensure the health of the crop, resulting in increased productivity. Its use to increase crop efficiency has received much attention from researchers in recent years. However, some results have been contradictory. Therefore, this study aimed to evaluate the productivity of common bean, variety BRS Estilo, against foliar application of growth regulator products under Cerrado conditions. It was carried out in the spring-summer of 2021/2022, the rainy season, in a dryland area at Fazenda JC Aroeira, located in the municipality of Nova Ponte, MG. The experimental design was randomized blocks, in a banded scheme, six treatments with four replications, being 1) Control; 2) Propiconazole (marketed as Tilt®); 3) Plant Growth Regulator composed of cytokinin, gibberellin and indolebutyric acid (marketed as Stimulate®); 4) Molybdenum and zinc (sold as Booster®); 5) Seaweed extract (Ascophyllumnodosum), with added glycine amino acid (marketed as Bioenergy®); 6) Class A organomineral fertilizer (marketed as Fision®), in two application periods: in the vegetative (V4) and reproductive (R5) stages. Characteristics such as number of final plants, number of pods/plant, number of grains/pod, mass of 100 grains, amount of grains retained in sieve 12 and productivity (kg ha-1) were analyzed, however, only for the yield characteristic, there was a significant difference, with the FISION and BOOSTER I treatments being superior to the control, but similar to the others.