MANEJO DE CAPIM MOMBAÇA NOS SISTEMAS CONVENCIONAL E SILVIPASTORIL SUBMETIDO A ALTURAS DE CORTE

Abstract

The silvopastoral system is a type of consortium production system that integrates forest and livestock, used as a strategy for sustainable land use. In silvopastoral systems, the tree component is usually arranged in the area in an East-West direction, so that it allows greater insertion of light between the lines, favoring the growth of forage. The objective was to evaluate the performance of forage Megathyrsus maximus cv. Mombasa, subjected to different cutting heights and distances from the eucalyptus line. The treatments were arranged in a silvopastoral system, in The experimental design used was entirely random in a factorial scheme (3 x 4), with three factors: two distances from the eucalyptus planting line (1 m from the canopy of the trees and 6 m from the canopy) of trees) and full, and four treatments, the cutting height of the forage grass: 50, 70, 90 and 110 cm, with four sixteen in the Conventional System (full sun), totaling forty-eight plots. In the Conventional system, the four cutting heights of the forage grass (50,70, 90 and 110 cm) were tested, with four replicates in each treatment, totaling 16 experimental units. The forage productive characteristics, height (cm), green forage mass (MV) (kg.ha-1 of MV), dry forage mass (DM) (kg.ha-1 of DM or kg.ha-1. cycle-1 of DM), leaf area index (IAF), specific leaf area (cm2.g-1) and tiller population density (DPP) (tillers.m-2). The accumulation of dry matter in Mombaça grass was shown to be superior in the silvopastoral system in the middle of the rows, in terms of natural matter, the highest production was found in the conventional system under full sun. The shading caused by the crown of the trees, had a negative influence on the tiller population, and this in turn, caused lower values of leaf área index. Cutting height at 50 cm causes death and a reduction in the number of tillers.