Castor Cake
is an excellent organic fertilizer because of high content of N (6.4%), Phosphoric Acid (2.55%) and Potash (1%) and moisture retention.
There is negative correlation between the contents of ricinine in castor seeds and oil content (r = -0.76). This content of ricinine in castor seed is determined by Agro climatic conditions.

Nutrient content of Castor Cake:
Organic matter - 75 - 80 %, Nitrogen - 4.0 - 4.5 %, Phosphorous - 1.5 %, Potassium - 1.25 - 1.5 %.
It also contains some micro nutrients viz., Calcium, Magnesium, Sulphur, Iron, Zinc, Manganese, Copper etc.

A typical composition of castor residue/meal is as follows:
Nitrogen - 4% min. Approx.
Phosphorous - 1% min. Approx.
Potassium - 1% min. Approx.
Moisture - 10 - 12 % max. Approx.
Oil Content - 0.7% max. Approx.

Advantages:
1. It provides all the major & minor nutrients necessary for better plant growth.
2. It also helps in increasing the nutrient uptake by plants.
3. It improves the soil fertility and productivity.
4. It is known to protect the plants from nematodes and termites.
5. It improves the yield & quality of the farm produce.
6. It improves the physical, chemical and biological properties of soil

Best Regards
Engineer : Mohamed El Attar
Yahoo mohamed.attar[at]yahoo.com
G Mail mohamed.attar01[at]gmail.com
Cell +2 0104214672

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