Castor seed oil cake is the natural by-product left after oil is mechanically pressed from castor seeds. It is rich in organic nitrogen, protein, and natural nutrients, and retains a moderate residual oil content — making it a widely used organic fertiliser and soil conditioner.

It is used as an organic manure and base ingredient in bio-fertiliser blends, as a soil conditioner that improves fertility and texture, and in horticulture, plantation crops, and composting — valued for slow, sustained nutrient release rather than short-term spikes.

Castor oil cake comes from mechanical pressing and retains a moderate residual oil content, giving gradual nutrient release and good soil-conditioning behaviour. De-oil cake (DOC) is further processed to remove almost all oil, giving higher nitrogen and faster nutrient availability. The right choice depends on your nutrient and release-rate needs.

Yes. Castor oil cake is widely used as an organic manure and soil conditioner. Its biodegradable, slow-release nutrient profile makes it well suited to organic and sustainable farming systems that prioritise long-term soil health.

Slow, gradual nutrient release reduces leaching and rapid nutrient loss compared with synthetic fertilisers, supports steady plant nutrition over time, and improves soil microbial activity, moisture retention, and structure — building long-term fertility and yield consistency.

No. Castor oil cake is supplied strictly for agricultural and industrial use as an organic fertiliser and soil input — it is not intended for animal feed and should be used only for its fertiliser and soil-conditioning applications.

Castor seed oil cake typically offers around 4-5% nitrogen with phosphorus and potassium, and moderate residual oil (around 8-10%). It is supplied in 50 kg HDPE/PP woven bags, with jumbo bags or loose bulk on request, and can be provided in crushed or cake form to suit your order.

Yes — samples are available on request for evaluation and field trials. Shipments use moisture-protected, export-grade packaging with container-optimised loading and full documentation, dispatched through Mundra Port, Gujarat, India for reliable seasonal and long-term supply.

The Patel Brothers is a Rajkot, Gujarat based exporter of castor oil, castor derivatives, and castor by-products. We supply castor oil cake with a consistent nutrient profile, a specification sheet with every shipment, moisture-protected export packaging, and reliable global logistics — backed by responsive support from enquiry through to delivery.