Vegetação espontânea e o controle de espécies competidoras: efeitos de tipos de capina e cobertura viva em um gradiente de densidade florestal

Recent research has been making efforts in the management of the herbaceous componentas an element that provides ecosystem services and in the reduction of externalities in theproductive processes. This work aimed to evaluate the composition of spontaneous vegetationwhen submitted to different management of weeding and living mulch by the species Diodiasaponariifolia. The evaluated agricultural systems are immersed in landscapes with a densitygradient of forest fragments. The richness of the community of spontaneous species wasinfluenced by the type of management, being larger in the plots of living mulch (65 species)and smaller with conventional weeding (47 species). At 120 days of monitoring, the relativeabundance of Cyperaceae (Cyp) and Poaceae (Poa) decreased significantly in treatments withlive cover in Gleba A: Cyp = - 8.52%; Poa = - 23.54% and in Gleba B: Cyp = - 33.75. For theselective weeding, the reduction in Gleba A followed: Cyp = - 3.32%; Poa = - 18.85% and inGleba B: Cyp = - 27.63%