CHARACTERISTICS OF GRAIN SORGHUM REGROWTH FOR FORAGE USE IN INTEGRATED SYSTEMS DO TRABALHO

Abstract

The objective was to evaluate the morph-productive characteristics of grain sorghum regrowth, in an integrated system with different breadth of cultivation strips, for forage use, in the semi-arid region. The experiment was conducted in the year 2022, at the Limoeiro do Norte, Ceara State, Brazil. The experimental area consisted of an integrated system thinned by strips of native vegetation (6 x 50 m) interspersed by three arrangements for the cultivation areas: 7; 14 and 28 meters wide x 50 meters long. Grain sorghum was cultivated in rainfall regime. The evaluation of regrowth occurred 60 days after harvesting the grains. The adopted experimental design was completely randomized, with three treatments (plots of 7 (T7); 14 (T14) and 28 (T28) meters wide x 10 meters long) and 4 replications. It was found that sorghum regrowth in T7 was more affected by the effect of proximity to forest strips. At T14, only the BFT was significantly lower than at T28. It was concluded that the regrowth of grain sorghum as forage is feasible in an integrated system in strips in the semi-arid region, however the breadth of the cultivation strip must be greater than 14 meters.