Evaluation of plant extract in control of dry bubble disease of white button mushroom caused by Verticillium fungicola f.sp. fungicola Preuss (Hassebr)

摘要

Dry bubble disease induced by Verticillium fungicola has been observed as an important disease of white button mushroom (Agaricus bisporus) in India. The symptoms produced on differentiated fruit body are localized light brown depressed spots. The adjacent spots coalesce together and form irregular blotches. If the pathogen infection is established before differentiation, sclerodermoid fruiting bodies appear on casing surface. Five plant extracts tested by poisoned food technique inhibited the growth of both host and pathogen. But their cumulative effect was found to improve the mushroom yield. Azadirachta indica (Neem) effectively controlled the pathogen and increased the yield of white button mushroom by 16.52% compared to control.