It refers to a clonostachys rosea fungus isolation strain called BVT cr-7, and its isolated strain is IDA 040933-01 strain of clonostachys rosea f.rosea. It also refers to a formula that includes the strain and / or its spores, as well as a method of prevention or treatment of plant diseases and / or disease sources. The strain is a biocontrol agent for the treatment of plant diseases selected from gray mold, white Moho disease, brown rot, root rot and / or Phomopsis disease.Se refiere a una cepa aislada del hongo Clonostachys rosea denominada BVT Cr-7, en donde dicha cepa aislada es la cepa IDAC 040913-01 de Clonostachys rosea f. rosea. Tambien se refiere a una formulacion que comprende dicha cepa y/o sus esporas y a un metodo para la prevencion o tratamiento de enfermedades y/o patogenos en plantas. Dicha cepa es un agente de control biologico para el tratamiento de enfermedades de plantas elegidas entre la enfermedad del moho gris, la enfermedad del moho blanco, la pudricion marron, la pudricion de la raiz y/o Phomopsis