Pathogenicity of Leveillula taurica Lev.(Arn) was proved on the chilli cultivar Parbhani Tejas under controlled conditions in screen house during 2014 and 2015. Typical symptoms were observed within ten to fifteen days after inoculation. After 25 days, as the leaves grow, the number of white tuft increased and coalesced giving the upper side a light greenish yellow, chlorotic spot. In mature leaves the infected veins of the leaf turns somewhat wetted appearance, thus upper side a light greenish yellow, cholorsis. Pathogenicity was proved In vitro. Based on typical symptoms on the foliage, microscopic observations and pathogenicity test; the pathogen has been identified as Leviellula taurica, the cause of powdery mildew of chilli.

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