Organic fertilizers are fertilizers that are naturally produced. Fertilizers are materials that can be added to soil or plants, in order to provide nutrients and sustain growth. Typical organic fertilizers include all animal waste including meat processing waste, manure, slurry, and guano; plus plant based fertilizers such as compost; and biosolids. Inorganic "organic fertilizers" include minerals and ash. The organic-mess refers to the Principles of Organic Agriculture, which determines whether a fertilizer can be used for commercial organic agriculture, not whether the fertilizer consists of organic compounds.

जैव उर्वरक उन उर्वरकों को कहते हैं जो जन्तुओं या वनस्पतियों से प्राप्त होते हैं। जैसे खाद, कम्पोस्ट, आदि its natural fertilizers who mixture structure of microrganism. its work is fication of enviromental nitrogen and unsoluble phasphorus change in soluble phosphorus.exp-azolla, rhizobium, azotobacter