Produtividade de milho verde cultivado em sucessão a adubação verde com aplicação de microrganismos eficientes, nas condições de Matias Barbosa, MG

Abstract

Green fertilization is a technique that results in the improvement of the physical, chemical and biological conditions of the soil, protecting it from erosion, and contributing to reduce dependence on external inputs. Thus, it is important to identify species of green manure adapted in each region. In addition, the use of efficient microorganisms (EM) may potentiate the beneficial effect of the green manuring technique. The objective of this study was to evaluate the performance of Crotalaria juncea (Crotalaria juncea), mucuna-preta (Mucuna aterrina) and pigs (Canavalia ensiformes) under the conditions of Matias Barbosa-MG, and its effect on corn- succession, in association with use of efficient microorganisms (EM). . This work was carried out in a family production system, in Sítio Irmão Coragem, between October 2016 and October 2017, in the municipality of Matias Barbosa (MG). A split plot scheme was used in the randomized complete block design with three replicates. The variables analyzed in the leguminous were biomass productivity and macronutrient content. In the corn crop, the total weight of green peas was evaluated, the percentage of marketable debris, the dry mass of the corn straw, as well as its Nitrogen content. The corn cultivar used was AG 1051. The values of biomass yield of leguminous and green maize, as well as the percentage of marketable cobs are in agreement with the national average for each variable. These results demonstrate that the studied leguminous show good adaptation to Matias Barbosa's edaphoclimatic conditions. The three leguminous species studied presented behavior compatible with the scientific literature and can be used to enrich the biodiversity of the local agroecossystem, adapting to the peculiarities of each species. EM provided a positive effect on the length of corn cobs in treatments with mucuna preta and spontaneous vegetation, as well as the phosphorus content in corn straw. Corn yields ranged from 16.8 t / ha to 8.1 t / ha, and although there was no response from the application of Efficient Microorganisms (EM) to maize-yield yield, this yielded a potential, with a tend to bring benefits.