Qualidade de grãos de soja cultivados em sistema de integração lavoura-floresta

Abstract

The crop-forest integration is one of the production systems that integrates the forest and agricultural components, mainly through the consortium and aims at the sustainable development of the components of the productive system. The objective of this work was to evaluate the physical, physiological and chemical composition of soybean grains cultivated in a consortium with eucalyptus in the crop-forest integration system (silviagricola). The crop-forest integration system was installed in in October 2011 in a farm in Marcelândia, MT, with three eucalyptus lines spaced 3.5 m x 3.0 m in three blocks. Eucalyptus ridges were distanced in 24 m, with a density of 323 trees per hectare. The eucalyptus lines were planted following north-south orientation. For the analysis of the grains, eight positions were obtained in the plot (in the form of transect), that is, 4 distances in relation to the eucalyptus row (1,0, 4,67, 8,33 and 12 m) and 2 faces (east side and west side). A sample of the same size of single soybean (monoculture), grown on the same farm and under the same cultural practices was obtained being the comparison witness. In general, it is concluded that the crop-forest integration system influences the production of soybeans, presenting lower values of productivity in relation to the monoculture system. In addition, the integrated system provided changes in some physical, physiological and chemical characteristics of the grains.