Material such as plant and animal wastes added to cropland and pastures to improve soil. Provides valuable soil nutrients and increases the organic content of soil (thus increasing moisture content).
Organic fertilizers differ from synthetic fertilizers in both origin and function. Synthetic fertilizers are often derived from petroleum products or from treating minerals with acid to make them more soluble (see phosphate, for example). Organic fertilizers come from naturally available sources; examples include bone meal, manures, greensand, fish emulsion, and compost. Because synthetic fertilizers are highly soluble (and often contain only NPK), they do not generally persist in the soil and provide little or no long term benefits. Organic fertilizers serve the double purpose of providing a wide range of nutrients while also improving soil-structure; in addition, many are slow to release their nutrient load and thus offer ongoing benefit to plants and soil organisms.
Fertilizer made from materials derived from living things, such as manure, bone meal, and blood meal.
a fertilizer that is derived from animal or vegetable matter
Remains, residues, or waste products of any organism containing one or more recognized plant nutrient(s) which is used primarily for its plant nutrient content and which is designed for use or claimed to have value in promoting plant growth.
Any substance of plant or animal origin used as a fertilizer (manure, compost); also include mineral-based fertilizers.
Organic matter added to soil to aid production. Includes manure and compost.
Organic material such as animal manure, green manure, and compost, applied to cropland as a source of plant nutrients. Compare commercial inorganic fertilizer.
Fertilizer from organic sources, including manure, compost, decaying plant matter and sewage sludge.
Fertilizers that contain carbon, hydrogen and oxygen, as well as needed nutrients. Organic fertilizers can come from naturally occurring sources or be made synthetically.
A by product of the processing of plant and animal matter that has sufficient nutrient capacity to have value as a fertilizer.e.g Manure.