Oil cakes

There are many varieties of oil cakes which contains not only nitrogen but also some P and K along with large percentage of organic matter. These oil cakes are of two types.

i. Edible oil cakes- suitable for feeding cattle.

ii. Non-edible oil cakes-not suitable for feeding cattle.

Oil cakes are quick acting organic manure. Though they are insoluble in water, their nitrogen became quickly available to plants in about a week or in 10 days after application. Oil cakes should be well powdered before application, so that they can be spread evenly and are easily decomposed by micro organisms. Depending on crops, oil cakes are applied as broadcast, drilled or placed near root zone while earthing up.