Abstract
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. Key words: Agaricus bisporus, Verticillium fungicola, dry bubble, wheat straw compost, compost, long method of composting, short method of composting, Azadirachta indica, Parthenium parthefolium.
Highlights
Evalu uation of pla ant extrract in contro ol of d dry bub bble dis sease of white buttton mu ushroo om cau used b by Verticilllium fu ungico ola f.sp p. fungiicola Preus s (Has ssebr))
Iff the pathogen infection n is establish hed before d differentiatio on, scleroderrmoid fruitin ng bodies appear on casing c surface
Azadirachta a indica (Nee em) effective ely controlle ed the patho ogen and inc creased the yield of white button mushroom by 16.52% compared c to control
Summary
Evalu uation of pla ant extrract in contro ol of d dry bub bble dis sease of white buttton mu ushroo om cau used b by Verticilllium fu ungico ola f.sp p. fungiicola Preus s (Has ssebr)). Haryana has become one of the leading states in white button mushroom production with 5312 tons/annum (Tiwari, 2004). The most common fungal diseases of white button mushroom are cobweb, dry/wet bubble, false truffle and green mould (Sharma, 1995). Dry bubble caused by Verticillium fungicola is prevalent in all mushroom growing areas and has 25-50% incidence (Sharma, 1995).
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