Castor Oil Cake is an excellent fertilizer because of high content of Nitrogen, Phosphoric Acid and Potash and moisture retention and it is also the prominent organic fertilizer can be used to as alternatives to chemical fertilizer. It is simple manure, which acts progressively that encourages soil microbial activity. 100 kg of Castor Oil cake brings to the floor as much nitrogen (N) as 1200 kg of cow dung. The Castor Oil cake has insecticidal properties and naturally pest repellent. It is can be used in organic farming.
When it is used as basic manure, Castor Oil Cake is taken by spreading on the soil 10 to 15 days before planting. When used as a fertilizer for maintenance, it is spread to the surface, slightly hidden if possible, and lightly watered if necessary.