USO DE DOSES DE AMINOÁCIDOS NA CULTURA DO MILHO SAFRINHA

Abstract

Maize holds a prominent position in Brazilian agriculture and is widely cultivated due to its versatility of use, ranging from animal nutrition to applications in advanced industrial sectors. Starting from the hypothesis that the amino acids application improves the productive performance, the biometric variables of growth and the nutrient content in plants. This study aimed to evaluate the agronomic and productive characteristics of corn subjected to amino acid application at the Federal Institute of Goiás – Ceres Campus. The experimental design consisted of randomized blocks in a 2×4 factorial scheme, with two application stages (V6 and V8) and four doses (0, 500, 1000, 1500 mL ha⁻¹), with four replications. The variables analyzed were plant height (PH), ear diameter (ED), ear height (EH), ear length (EL), number of grain rows per ear (NGR), number of grains per row, thousand-grain weight, and yield. The results showed that most of the evaluated agronomic characteristics, such as plant height, ear height, ear length, and ear diameter, did not exhibit significant statistical differences among amino acid doses or application stages. However, variables such as thousand-grain weight and yield were significantly influenced. Yield showed a linear increase with higher doses, with the highest value obtained at 1500 mL ha⁻¹, reaching 4710.03 kg ha⁻¹—an increase of 26.6% compared to the control (3721.11 kg ha⁻¹). These findings indicate that although amino acid application did not lead to expressive changes in morphological traits, its effect on yield components was decisive in enhancing productivity.