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For instance, sheep manure is high in nitrogen and potash, while pig manure is relatively low in both. Horses mainly eat grass and a few weeds, so horse manure can contain grass and weed seeds, because horses do not digest seeds as cattle do. Cattle manure is a good source of nitrogen as well as organic carbon. [3]
Liquid manure was developed in the 20th-century [1] as an alternative to fermented manure. Manure in both forms is used as a nutrient-enriched fertilizer for plants, [ 2 ] containing high levels of nitrogen , phosphorus , and potassium present in farm animals' excretions and originating from the food they consume.
Green manure is broken down into plant nutrient components by heterotrophic bacteria that consumes organic matter. Warmth and moisture contribute to this process, similar to creating compost fertilizer. The plant matter releases large amounts of carbon dioxide and weak acids that react with insoluble soil minerals to release beneficial nutrients.
Get to grips with green manure and make your gardening more eco-friendly by using this natural fertilizing method
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. [2] Inorganic "organic fertilizers" include minerals and ash.
Liquid plant manures are fermented extracts of plant material that are used primarily as fertilizers, but also for pest control, plant strengthening and other phytosanitary purposes. The best known is nettle water, usually made from stinging nettles. Other well-known types are made from comfrey or horsetail.