Effect of bio-control agents against powdery mildew of pea caused by Erysiphe polygoni DC

Pea (Pisum sativum L.) occupies a prominent place in the vegetable cultivars in India. Powdery mildew disease on pea (Pisum sativum L.) incited by fungus Erysiphe polygoni DC is an important limiting factor in pea cultivation in Western Maharashtra. The study was undertaken under field conditions to evaluate the effect of bio-control agents against powdery mildew of pea incited by Erysiphe polygoni DC. All the spray treatments were found effective against the disease and significantly reduced the powdery mildew intensity and thereby increased the seed yield and in pea cv. Arkel over unsprayed control. Among the six biocontrol agents evaluated under field conditions, three sprays of Trichoderma hargianum and Trichodermahamatum was found more effective in reducing disease severity and yield which was at par with each other.