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Bihar is considered one of the leading states for mushroom farming in India, as it accounts for approximately 10.82% of the country's total mushroom production, making it the largest producer nationally. The state's favorable climate, availability of agricultural waste, and supportive government policies contribute to its success in mushroom cultivation. Odisha also ranks highly, contributing over 9% to the national output, with suitable climatic conditions and established mushroom farming practices. Other states like Haryana, Maharashtra, Punjab, Himachal Pradesh, and Uttar Pradesh have also developed mushroom farming industries, but Bihar's extensive production and favorable environment make it particularly suitable for both commercial and small-scale mushroom cultivation.