Consórcio de milho safrinha com Brachiaria spp. e cultivo de soja em sucessão

Abstract

The objective of this research was to evaluate changes in productivity of winter maize intercropped with Brachiaria brizantha cv. Marandu and soybean crops sown in succession to the late harvest. The experiment was designed in randomized blocks with treatments plots of winter corn sown at two densities ( 5.2 and 5.7 plants m-2) and sub - plot the consortium with five densities B. brizantha cv. Marandu (0, 5, 10, 20 and 40 plants m-2) was analyzed productivity and morpho-physiological components plants corn and forage. Was also analyzed productivity and morphology of soybean plants cultivated in succession on the straw B. brizantha cv. Marandu grazed; B. brizantha cv. Marandu intercropped with late season maize; B. ruziziensis mowing; B. ruziziensis intercropped with late season maize and single late season maize, with four replications. Portions of the blocks were sub-divided into two soybean cultivars (NA 5909 RR and BMX Turbo RR, both resistant gliphosate). The soybean also was sowing and evaluated with in four densities of B. brizantha cv. Marandu and B. ruziziensis (5, 10, 20 and 40 plants m-2). The results were submitted to variance analysis, polynomial regression test and SNK test at 5% probability. The consortium corn with B. brizantha cv. Marandu enables the production of grain and pasture, provided that adequate plant density of both species. The dry weight of corn and fodder, single or in consortium altered plant density and plant height of soybean can be changed but not changed soybean productivity in succession.