DEMANDA ENERGÉTICA NA SEMEADURA DA SOJA COM DIFERENTES CONFIGURAÇÕES DE SULCADORES

Abstract

The objective of this research was to evaluate the energy demand required by a seeder-fertilizer for direct planting, with different configurations of furrowers in the implantation of soybean culture, in lowland areas. The experiment was conducted in two agricultural areas, typically cultivated with irrigated rice, located in the Central region of the state of Rio Grande do Sul. A randomized block design was used, in a bifactorial arrangement, and four furrow configurations (shank, shank with furrow-groove system, corrugated disc and double disc) were evaluated in two areas with different characteristics (agricultural area 1 and agricultural area 2). The variables studied were: drawbar pull, real travel speed, slippage of the driving wheels of the tractor and specific fuel consumption. Based on the analysis of the results obtained in this study, it can be said that the furrow mechanisms influence the energy demand of the mechanized set, regardless of the agricultural area. Specific fuel consumption with the use of shanks instead of discs was 0.7 times lower, for both areas.