Manure's organic matter used as organic fertilizer in agriculture. Manures contribute to the fertility of the soil by adding organic matter and nutrients, such as nitrogen that's trapped by bacteria in the soil. Higher organisms then feed on the fungi and bacteria in a chain of life that comprises the soil food web. In the past the term "manure" included inorganic fertilizers, but this usage's now very rare. Etymology The word manure came from Middle English manuren meaning "to cultivate land",… (More on Manure)