Viabilidade agronômica do consórcio milho silagem com braquiária para o estado do Rio Grande do Sul

Abstract

Corn is the second most cultivated grain crop in Brazil, it increased its area and production along with the intensification of the No-tillage System (SPD), but to actually carry out the SPD it is necessary to produce straw and permanent soil cover. Crops of economic interest do not produce enough straw, especially when using corn for forage production. Thus, the objective of this study was to evaluate the intercropping of corn with three species of forages, and three different sowing densities, without interfering in the productivity of green mass in corn, intensifying the use of the soil and providing the formation of straw. The design was randomized blocks, the forages used were Brachiaria brizantha, cultivar Piatã and cultivar Marandu and Panicum maximum, cultivar Tamani, with seeding densities of 5; 10 and 20 kg ha -1. The treatments showed significance only for the forage height parameter, with Piatã grass showing greater development. The green mass and dry mass of forages did not differ statistically. Corn did not suffer significant interference in green mass yield.