Organic manures contain small percentage of nutrients and they are applied in large quantities. Farmyard manure (FYM), compost and green-manure are the most important and widely used bulky organic manures.

Nitrogen - 10 - 12%,

Phosphorous - 1 - 2%,

Potassium - 1.0%.

1.They supply plant nutrients including micronutrients

2.They improve soil physical properties like structure, water holding capacity etc.,

3.They increase the availability of nutrients

4.Carbon dioxide released during decomposition acts as a CO2 fertilizer and Plant parasitic nematodes and fungi are controlled to some extent by altering the balance of microorganisms in the soil.

Organic manures contain small percentage of nutrients and they are applied in large quantities. Farmyard manure (FYM), compost and green-manure are the most important and widely used bulky organic manures.

Nitrogen - 10 - 12%,

Phosphorous - 1 - 2%,

Potassium - 1.0%.

1.They supply plant nutrients including micronutrients

2.They improve soil physical properties like structure, water holding capacity etc.,

3.They increase the availability of nutrients

4.Carbon dioxide released during decomposition acts as a CO2 fertilizer and Plant parasitic nematodes and fungi are controlled to some extent by altering the balance of microorganisms in the soil.