Bioestimulantes no crescimento e desempenho agronômico do feijão-comum de ciclo superprecoce

• Autor(a) principal: Frasca, Laylla Luanna de Mello
• Data de Publicação: 2019
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• dARK ID: ark:/38995/00130000098ng
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/9329
• topic: Phaseolus vulgaris; Promotores de crescimento; Nutrientes; Trocas gasosas; Desempenho agronômico; Growth promoters; Nutrient; Gas exchange; Agronomic performance; CIENCIAS AGRARIAS::AGRONOMIA

Brazil is one of the world's largest common bean producers, with grain being a staple food of the Brazilian diet and it is an important source of protein, mainly for the lowincome population. Due to the population growth, there is an increase in the demand for this food. In this sense, the use of biostimulants may be an alternative to increase the productivity of common bean. The application of these substances can accelerate the development of the plants in the field and guarantee the health of the crop resulting in increased productivity. The objective of this study was to determine the effect of the use of biostimulants on gas exchange, leaf nutrient and grain contents, dry matter production, grain yield and its components of the super early common bean crop. Experiments were conducted during the winter and summer periods, in the Cerrados region. Experimental design was a randomized complete block design, with 13 treatments and four replications in the winter season, and 12 treatments and four replications in the summer harvest. Treatments of the winter season were composed of the following biostimulants: (I) Micronutrient complex, (II) Leonardite; (III) Micro + fulvic acids, (IV) Micro + amino acids; (V) Micro + Ascophyllus; (VI) Micro + Eklonya; (VII) N + Zn; (VIII) N + K + amino acids; (IX) Growth regulators; (X) Trichoderma asperellum, (XI) T. asperellum + Bacillus methylotrophicus, (XII) Peat and (XIII) Control. Treatments of the summer season were the same treatments used in the winter season, except the treatments (VII) N + Zn and (X) Trichoderma, which were removed, and the treatment T. asperellum + Bacillus methylotrophicus via foliar application was added. Data were submitted to analysis of variance and LSD test to mean comparation at 5% of probability. For the comparation between treatments and control it was used the Dunnet test at 5% probability. In the two agricultural seasons, biostimulants did not produce significant increase on growth and agronomic performance of the BRS FC-104 common bean cultivar. Therefore, based on the results obtained in two agricultural seasons, with their respective and peculiar experimental conditions, it can be inferred that the use of biostimulants is a practice that does not provide benefits to farmers.