Organic fertilizer is manure, such as feces, rotting animal carcasses or maturity of plants. Organic fertilizer like manure, chicken manure, decomposition of various litter, grass Pin gray and so can make organic fertilizer.

Organic fertilizer features are: a wide source of raw materials, large quantities. Full of nutrients, low levels. Fertilizer late and long, subject to microbial オ can be absorbed by the decomposition of plant transformation. Good soil building effect. Natural fertilizer commonly used varieties of green manure, human waste, manure, compost, composting, biogas manure and waste fertilizers.

Organic fertilizers according to their nutrient content compared to chemical fertilizers, the former is a variety of nutrients, nitrogen, phosphorus, potassium, calcium, magnesium, sulfur and trace elements are, while the latter is more single - nitrogen fertilizer only nitrogen, phosphorus fertilizer only phosphorus and potassium fertilizer only potassium, even if only a compound fertilizer containing nitrogen, phosphorus, potassium and other nutrients in a limited number. However, various types of organic fertilizer containing nutrients, although complete, its concentration was lower, with chicken manure for example, the nitrogen content of about 1.6%, phosphorus content of about 1.5%, potassium content of about 0.9%, or 100 kg manure nitrogen (n) 1.6 kg, phosphor (p2o5) 1.5 kg, potassium (K2O) 0.9 kg. Urea nitrogen fertilizer 46%, ie 100 kg of urea nitrogen (n) 46 kg of 60% potassium chloride, potassium chloride containing 100 kg k2o60 kg of fertilizer containing nutrient concentrations much higher than organic fertilizer. Organic fertilizer contains large amounts of organic matter, which is a fertilizer does not have. Organic fertilizer to the soil fertilized by microbial decomposition, decay オ can release nutrients for uptake by plants, after the fertilizer is applied to the soil can play a role. Therefore, many kinds of organic fertilizer containing nutrients, low concentration, slow release. Fertilizer is in contrast to a single nutrient - concentration high, quick release. Both have advantages and disadvantages, organic manure and chemical fertilizer オ should be able to avoid weaknesses, give full play to its effectiveness.