Waste decomposer helps the raise in soil micro-organism and leaves congenial environment for nutrients release by decomposing the plant/ crop residue in the field by releasing enzyme. Waste decomposer works as Bio fertilizer, Biocontrol and as well as soil health reviver.

The IARI has developed PUSA Decomposer, which is a set of four tablets made by extracting fungi strains that help the paddy straw to decompose at a much faster rate than usual, giving farmers the option to shred the straw, spray a solution containing the fungal strains, and mix it with the soil for decomposition. The Indian Agricultural Research Institute (IARI) is administered by Indian Council of Agricultural Research (ICAR).