UTILIZAÇÃO DE BIOESTIMULANTE DE CRESCIMENTO CONTENDO AMINOÁCIDOS E QUITOSANA NO CULTIVO DE MILHO

Abstract

The project was carried out in the experimental field of the Escala Farm of the Federal Institute of Goiano, located in the municipality of Iporá, Goiás, Brazil. The statistical design used was randomized blocks, and the treatments consisted of six doses of the growth bioestimulant containing amino acids and chitosan: 0, 200, 400, 600, 800, and 1000 mL ha-1, applied via foliar spraying on corn plants, with four replications. When the corn plants reached the vegetative stage of four fully expanded leaves (V4), and before the first application of the treatments, the SPAD chlorophyll index of the corn plant leaves was determined. Then, fifteen days after the first application of the treatments, the SPAD chlorophyll index was evaluated again. At the physiological maturity stage, the ears from the useful area of the plots were harvested to determine the yield components: thousand-grain weight and grain yield at 13% moisture. The data obtained were subjected to analysis of variance and regression using the statistical software SiSVAR 5.6, with a significance level of 5% for the F-test. The application of doses ranging from 400 to 1000 mL ha-1 of growth bioestimulants based on amino acids + chitosan significantly increases the productivity of corn plants.