#Carbon_Nitrogen (C:N)_Ratio Humas - 10 : 1 Normal Soil - 10.1 - 12.1 Legumes - 20.1 - 30.1 Cereals - 90 : 1 FYM - 20-30 : 1 Sawdust - 400 : 1 ( highest ) Microorganism - 4 : 1 - 9 : 1( Lowest) 3.1K viewsedited 04:05