Bioestimulantes no crescimento vegetal e desempenho agronômico do feijãocomum de ciclo superprecoce

Abstract

Common bean is one of the main crops produced and consumed in Brazil, presents great economic and social value for the population. Biostimulants are synthetic or natural substances applied to seeds, leaf surface and soil to provide better development of plants. However, its effects are still questionable. The objective of this work was to determine the influence of the use of biostimulants on the metabolism and its effects on the yield components and nutritional contents of the common bean with early life cycle. The experiment was conducted during the summer period in the Cerrado region. The experimental design was a randomized block with 12 treatments and 4 replicates. The treatments were composed of the following biostimulants: (I) Kinetin + acids; (II) Leonardite; (III) Micro + fulvic acids, (IV) Micro + amino acids; (V) Micro + Ascophyllum; (VI) Micro + Eklonya; (VII) N + acids; (VIII) N + K + amino acids; (IX) Trichoderma asperellum + Bacillus methylotrophicus (AF), (X) Trichoderma asperellum + Bacillus methylotrophicus, (XI) Peat and (XII) Control. The data were submitted to analysis of variance and the LSD test and the Dunnet test to 5%, for comparison of the treatments to the control. The use of biostimulants did not promote a significant increase in gas exchange, leaf width, number of grains per pod, mass of 100 grains and productivity. It presented positive results in the accumulation of total dry matter, of the stems, leaves and pods with the use of Micro + Ac. Fulvic and had more pods per plant by applying Micro + Ascophyllum.