Question

250 words essay on natural fertilizer​

Answer 1

Natural fertilizers often use alfalfa meal, cottonseed meal, or fish emulsion to provide nitrogen; bone meal or rock phosphate to provide phosphorus; and kelp meal or granite meal to provide potassium.

These are fertilizers derived from animal matter, animal excreta (manure), human excreta, and vegetable matter (e.g. compost and crop residues). Naturally occurring organic fertilizers include animal wastes from meat processing, peat, manure, slurry, and guano.

In contrast, the majority of fertilizers used in commercial farming are extracted from minerals (e.g., phosphate rock) or produced industrially (e.g., ammonia). Organic agriculture, a system of farming, allows for certain fertilizers and amendments and disallows others; that is also distinct from this topic.