Biological Control of Stem Rot of Rajmash (Phaseolus vulgaris L.)

Stem rot caused by Sclerotinia sclerotiorum is an important disease of Rajmash (Phaseolus vulgaris L.) in Eastern U.P. The evaluation of four fungal and two bacterial bio-agents against the pathogen. Maximum inhibition (84.83%) of growth of the pathogen in-vitro was obtained with Coniothyrium minitans followed by T. viride, T. harzianum, Trichoderma virens and Pseudomonas flourescens. Bacillus subtilis proved to be least effective.In-vivo condition minimum disease incidence (12%) was recorded in the plots treated with Coniothyrium minitans followed by Trichoderma viride (16.0%) as regards to the management of the disease followed by Trichoderma harzianum (20.0%) and Trichoderma virens (28.0%). The maximum disease intensity (36%) was noticed with P. flourescens which proved worst among all the bio-agents