USO DE AMINOÁCIDOS E SUBSTÂNCIA HÚMICA NA CULTURA DA SOJA

Abstract

Products composed of amino acids and humic substances are effective and sustainable enough to become a viable and efficient alternative in soybean cultivation. The use of biostimulants promotes improvements in the development of the aerial part of the plant in general, generating environmental benefits and consequently making productivity more sustainable over time. Thus, the study aimed to evaluate the effect of biostimulants on growth characteristics, production components and soybean grain productivity. The experiment was conducted in the experimental area of the Federal University of Mato Grosso do Sul, Chapadão do Sul-MS campus. A randomized block experimental design was used, with six treatments and four replications. The treatments were composed of control, amino acids and humic substances in different proportions. Doses equivalent to 1,25 + 250 ml/ ha-1, 2,5 + 500 ml/ ha-1, 3,75 + 750 ml/ ha-1of the recommendation were used and consisted of the isolated application of biostimulants. Assessments included plant height, first pod intersection height, number of branches, number of nodes, number of pods, relative chlorophyll index, shoot dry mass, grain mass, thousand-grain mass and productivity. The treatment that uses a dose of 2,5 ml/ha-1 humic substance stood out for favoring all the variables studied. However, other treatments, such as amino acids, also obtained positive results, influencing the plant's development. The use of amino acids and humic substances were favorable to the development of the soybean plant in the field.