Neem Cake, Color : Brown

Neem cake as organic fertilizer:
since very early in india neem are being used as a natural fertilizers. It had become very popular due to its dual impact of soil enhancer as well as pest repellent. Neem cakes as well as neem leaves are used to fertilize the soil. The followings are the nutrient content of neem seed cake:
nutrients percentage and neem cake composition
(n) nitrogen (2.0% to 5.0%)
(p) phosphorus (0.5% to 1.0%)
(k) potassium (1.0% to 2.0%)
(ca) calcium (0.5% to 3.0%)
(zn) zinc (15 ppm to 60 ppm)
(cu) copper (4 ppm to 20 ppm)
(s) sulphur (0.2% to 3.0%)
(mg) magnesium (0.3% to 1.0%)
(fe) iron (500 ppm to 1200 ppm)
(mn) manganese (20 ppm to 60 ppm)