PRODUTIVIDADE DE SORGO GRANÍFERO EM CONSÓRCIO COM CAPIM TAMANI, EM DIFERENTES DENSIDADES POPULACIONAIS E SISTEMAS DE SEMEADURA

Abstract

In the Midwest region, the farmers have difficulty producing straw the off-season to maintain the no-tillage system. In this sense, intercropping has been more efficient than single cultivation, due to the more efficient use of soil, investment, and labor, and the better use of water, light, and nutrients. This paper aimed to verify the grain and fresh mass production potential of the graniferous sorghum consortium and Panicum maximum grass, hybrid BRS Tamani, in different sorghum population densities and sowing systems of the grass. The experimental design was in randomized blocks, 2x2 factorial scheme, five replicates and was carried out in the Arenópolis municipality field, Goiás State (GO), Brazil, on February 2, 2019. The first factor consisted of two sorghum population densities (180 and 240 thousand plants ha-1) and the second factor consisted of two sowing types of Tamani grass, being at the bottom of the planting furrow, together with the fertilizer, and the manual launch in the total area. Results showed that the interaction between population density and sowing system has not affected the sorghum grain yield and fresh mass production of Tamani grass. Regarding grain yield in the consortium, the best population density was 180 thousand plants ha-1 and the best sowing system was in the planting furrow. Aiming to balance grain yield and forage fresh mass yield, the best sowing system was the manual launch, regardless of population density.