Integrated Management of Web Blight ( Rhizoctonia solani Kühn) of French Bean

Experiment was conducted in laboratory and field to find out the comparative performance of few biocontrol agents and fungicides and their integration for management of web blight (Rhizoctonia solani Kuhn) in French bean. Efficacy of four bioagents, Trichoderma viride, Trichoderma harzianum, Trichoderma virens and Aspergillus niger was tested in vitro. All the bioagents significantly inhibited the mycelial growth as well as number of sclerotia of R. solani. The maximum mycelial growth inhibition (62.12 %) was observed by T. harzianum followed by T. viride (57.28 %), T. virens (51.38 %) and A. niger (46.72 %), respectively. The per cent reduction in the number of sclerotia was also maximum by T. harzianum (69.76 %) followed by T. viride (65.28 %), T. virens (60.05 %) and A. niger (52.82 %) after 168 h of incubation in lab.