Potential of phytomass production of green manure in a consortium with maize in the system of alleys under savanna Roraimense

Abstract

The use of cover crops is important for the physical quality of the soil, and there are several
legume species capable of symbiosis with bacteria, incorporating atmospheric N and other
nutrients in their biomass, which favors the mineralization and the release of nutrients in the
soil Improving your fertility. The objective of this work was to evaluate the soil cover provided by
the aerial part phytomass production of different soil cover plants in soils of Roraima savannah.
The experiment was carried out in the field in 2016 in the field of Olericultura of the Agrotechnic
School, Murupu-UFRR campus, municipality of Boa Vista-RR. The experimental design was
randomized blocks with subdivided plots, using the factorial scheme of 2 x 3, referring to the
presence and absence of allele systems in the main plot, and in the subplots, three types of
maize consortia in three replicates. The legume biomass was collected on the same day as the
corn harvest, at 75 days after planting. The characteristics, fresh shoot mass, shoot dry mass
and chlorophyll content were evaluated. Among the factors studied for the variable production of shoot mass, which ranged from 1.76, 0.75 and 1.85 kg per square meter, for crotalaria,
beans and pork, respectively, in the presence of alleles and 2.23 , 0.76 and 1.26 kg in the absence
of alleles. Crotalaria had the highest dry biomass production with 5,107 t ha-1. For the
production of fresh mass of aerial part the crotalaria provided greater production per hectare.