Abstract: "Compositions comprising a streptomyces-based biological control agent and another biological control agent". The present invention relates to a composition comprising a) streptomyces microflavus strain nrrl b-50550 and / or a mutant thereof having all identifying characteristics of the respective strain, and / or at least one metabolite produced by the respective strain exhibiting activity. against insects, mites, nematodes and / or phytopathogens and / or a mutant thereof having all identifying characteristics of the respective strain, and / or at least one metabolite produced by the respective strain that exhibits activity against insects, mites, nematodes and / or b) at least one other biological control agent selected from specific microorganisms and / or a mutant thereof having all the identifying characteristics of the respective strain, and / or at least one metabolite produced by the respective strain which exhibits insect activity. , mites, nematodes and / or phytopathogens in a synergistically effective amount. furthermore, the present invention relates to the use of this composition as well as a method for reducing total damage to plants or parts of plants. 1/1resumo patente de invenção: "composições compreendendo um agente de controle biológico à base de streptomyces e um outro agente de controle biológico". a presente invenção refere-se a uma composição compreendendo a) streptomyces microflavus cepa nrrl b-50550 e/ou um mutante da mesma tendo todas as características de identificação da respectiva cepa, e/ou pelo menos um metabólito produzido pela respectiva cepa que exibe atividade contra insetos, ácaros, nematódeos e/ou fitopatógenos e/ou um mutante dos mesmos tendo todas as características de identificação da respectiva cepa, e/ou pelo menos um metabólito produzido pela respectiva cepa que exibe atividade contra insetos, ácaros, nematódeos e/ou fitopatógenos e b) pelo menos um outro agente de controle biológico selecionado de micro-organis