Abstract
The white button mushroom (Agaricus bisporus) constitutes 31% of global mushroom production, with India contributing 85% of its total mushroom yield. Despite its industrial significance, the productivity of A. bisporus in India is hindered by various diseases and environmental factors. Key fungal diseases such as Wet Bubble, Dry Bubble, Cobweb, Green Mould, Brown Plaster Mould, and Bacterial Blotch significantly impact yield. Effective disease management practices include maintaining hygiene, proper composting and pasteurization, and targeted chemical treatments. Genetic diversity within A. bisporus strains remains limited, increasing susceptibility to pathogens and posing challenges for disease resistance.