Discloses a composition and methods comprising in a reproductively viable form and amount: Trichoderma atroviride NMI No. V08/002387. Further discloses a composition which further comprises at least one additional strain of Trichoderma atroviride selected from Trichoderma atroviride NMI No. V08/002389; Trichoderma atroviride NMI No. V08/002388; and Trichoderma atroviride NMI No. V08/002390. The composition(s) finds application as a biological control agent to control selected soil borne pathogens and increase plant growth.