Animal dung has been used for centuries as a fertilizer for farming, as it improves the soil structure (aggregation), so that it holds more nutrient and water, and becomes more fertile. Animal manure also encourages soil microbial activity, which promotes the soil's trace mineral supply, improving plant nutrition. It also contains some nitrogen and other nutrients that assist the growth of plants.

Manures with a particularly unpleasant odor (such as human sewage or slurry from intensive pig farming) are usually knifed (injected) directly into the soil to reduce release of the odor.

Manure from pigs and cattle are usually spread on fields using a manure spreader. Due to the relatively lower level of proteins in vegetable matter, herbivore manure has a milder smell than the dung of carnivorous or omnivores - for example, elephant dung is practically odorless. However, herbivore slurry that has undergone anaerobic fermentation may develop more unpleasant odors, and this can be a problem in some agricultural regions. Poultry drooping are harmful to plants when fresh but, after a period of composing, are valuable fertilizer.

Manure is also commercially composed and bagged and sold retail as a soil amendment. Sometimes even human sewage sludge is used, as is the case for Dillo Dirt, a product that has been sold by the city of Austin, Texas municipal wastewater department since 1989.

Available Quantity Of Elements in Bagan Organic Manure

S.NO. Elements Minimum Percentage Maximum Percentage
1 Nitrogen 2.0% 2.5%
2 Phosphorus 2.0% 2.6%
3 Potassium 1.5% 1.8%
4 Calcium 3.0% 1.4%
5 Sulphur 1.2% 1.7%
6 Magnesium 0.8% 1.5%
7 Iron .03% .05%
8 Sodium .03% .10%
9 Others 2.0% 5.0%
10 Organic Substance 50% 55%
11 Moisture 22% 28%
Note: Because of Bio-Fertilizer the quantity of elements can increases or decreases.