Manejo de pastos consorciados de capim-marandu e amendoim forrageiro sob lotação rotativa

Abstract

The introduction of legumes into pasture systems aids animal performance and forage production. However, the lack of knowledge negatively interferes in its management. It was aimed with the present experiment determine the defoliation frequency which allows good compatibility and structure of the canopy in mixed pastures with forage peanut and marandu grass. Thus, a pasture trial was set in a randomized blocks design with three replicates and measurements replicated in time (seasons of the year). We studied four defoliation frequencies, three variable intervals, time for the canopy to reach 90, 95 and 100% of light interception (LI) and fixed days of 42 days (42FD) in pastures in consortium with Brachiaria brizantha cv. Marandu and Arachis pintoi cv. Mandobi. At each pasture cycle, forage mass, LAI and vertical distributions of the botanical and morphological components were evaluated. The managements of 95LI and 100LI presented greater mass and total and grass IAF, while managements of 90LI and 42FD presented a more favorable environment for the growth of the forage peanut, providing greater mass and leguminous IAF. The treatments of 90% and 95% of LI promoted satisfactory growth for both grass and leguminous plant, and, therefore, is most indicated for the consortium between both species in intermittent pasture managements.