Efficiency of bioestimulants in the management of water deficit in soybean culture

Abstract

This work aimed to evaluate the physiological characteristics and grain yield of soybeans submitted to the application of different biostimulants based on macronutrients, micronutrients, amino acids, plant extracts and other substances and natural complexes. The experiment was developed at the Teaching, Research and Extension Farm (FEPE) of UniBRAS-Faculdade Rio Verde, Rio Verde-GO. The experimental design used was randomized blocks with four replications. In the treatments, 5 biostimulants were tested separately: T1) Amino acids; T2) Seaweed Extract; T3) Fulvic acids; T4) Phytohormones; T5) Nutrients and T6) Control. Biometric and physiological variables, the mass of 100 grains and grain yield were evaluated. Biometric and physiological data, the mass of 100 grains and grain yield were subjected to analysis of variance (at 5% probability) and significance cases were subjected to the mean test (Tukey at 5% probability), using the SISVAR® statistical software. The use of biostimulants promoted greater resilience in the water deficit, as well as significant physiological and productivity increases in the soybean culture, in addition to providing greater protection to the plant, showing the efficiency of the use of biostimulants in promoting greater capacity to support a period of water deficit.