Microbial Diversity in Spent Mushroom Substrate (SMS)
After mushrooms are harvested, the leftover material that includes the partially decomposed paddy straw, sawdust and other agricultural wastes together called as Spent Mushroom Substrate (SMS). This might look like simple waste. But it’s actually full of life.
This material contains millions of helpful microbes (tiny living organisms) that work quietly in the soil. They help break down nutrients, make them easier for plants to absorb, and even protect plants from harmful diseases. This includes bacteria that helps in phosphorus solubilization (PSB), IAA ( Indole-3- acetic acid) production and sources of other plant growth factors. These bacterial populations can be explored for understanding beneficial microorganisms and for encouraging sustainable agriculture.
If we think SMS as a natural booster for soil:
• It enriches the soil with nutrients
• Supports healthier and stronger plant growth
• Reduces the need for chemical fertilizers
• Promotes eco-friendly farming
Instead of throwing it away, this “waste” can be reused to improve soil health and grow better crops naturally.