<I>In-vitro</I> Efficacy of <I>Trichoderma</I> Species and Fungicides against <I>Ganoderma lucidum</I>

Abstract

Study was made to test the efficacy of five Trichoderma species (biocontrol agents) and two fungicides, on suppression of Ganoderma lucidum Karst. invasion in root block of Albizia procera Benth., tree in two type of media in-vitro. The fungicides used were Bavistin(0.2%) and Bordeaux mixture (5:5:50) while the biocontrol agents were Trichoderma pseudokoningii, T. longibrachiatum, T.atroviride. T.polysporum and an unidentified Trichoderma sp. isolated from A.procera living root surface. The test fungus, Ganoderma lucidum was isolated from A.procera. After 8 weeks of incubation (27±2°C), Bavistin and Bordeaux mixture were found equally effective in minimizing weight losses in different combination of biocontrol agent. The best treatment combination was Bordeaux mixture + T.polysporum in sand soil medium.