Sl no

Types of Substrates

C:N Ratio

Suitability

1

Fish, scrap poultry manure, night soil, activated sludge, pig manure, sheep dropping, meat scraps, cotton seed meal and other oil seed residues

1-19

Most suitable due to high Nitrogen content

2

Garbage, sea weed, butter cup, amaranthus, lettuce, cabbage and vegetable waste which are fresh, green and succulent including wastes from food processing industries

19-27

Moderately suitable

3

Saw dust flax, waste straw, coir waste, etc. including all crop residues with high lignocelluloses content, high carbon and low moisture

27-208

Less suitable