1Central Potato Research Institute, Shimla, 171 001, (Himachal Pradesh).
2Central Potato Research Institute Campus, Modipuram, Meerut, 250 110, (Uttar Pradesh).
3JV College, Baraut, CCS University, Meerut, 250 110, (Uttar Pradesh).
In the present study, four bio-agents, viz., Penicillium aurantiogriseum, P. viridicatum, Trichoderma viride and Acremonium strictum were evaluated for their potential in controlling potato late blight. All the four bio-agents significantly reduced P. infestans sporangial germination, T. viride and P. viridicatum being better than the others. Besides, all the bio-agents tested provided good control of late blight development both on detached leaves and whole plants of potato cv. Kufri Chandramukhi.