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  2. Environmental impacts of animal agriculture - Wikipedia

    en.wikipedia.org/wiki/Environmental_impacts_of...

    Permanent meadows and pastures, grazed or not, occupy 26% of the Earth's ice-free terrestrial surface. [18] [19] Feed crop production uses about one-third of all arable land. [18] [19] More than one-third of U.S. land is used for pasture, making it the largest land-use type in the contiguous United States. [30]

  3. Manure - Wikipedia

    en.wikipedia.org/wiki/Manure

    Compost containing turkey manure and wood chips from bedding material is dried and then applied to pastures for fertilizer. Compost is the decomposed remnants of organic materials. It is usually of plant origin, but often includes some animal dung or bedding.

  4. Pastured poultry - Wikipedia

    en.wikipedia.org/wiki/Pastured_poultry

    A free range pastured chicken system. Pastured poultry also known as pasture-raised poultry or pasture raised eggs is a sustainable agriculture technique that calls for the raising of laying chickens, meat chickens (broilers), guinea fowl, and/or turkeys on pasture, as opposed to indoor confinement like in battery cage hens or in some cage-free and 'free range' setups with limited "access ...

  5. Feather meal - Wikipedia

    en.wikipedia.org/wiki/Feather_meal

    Feather meal is used in formulated animal feed and in organic fertilizer. Worldwide, approximately 50 billion chickens were used for human consumption in 2014. [1] Feather meal is made through a process called rendering. Steam pressure cookers with temperatures over 140 °C (284 °F) are used to "cook" and sterilize the feathers.

  6. Controlled-release fertiliser - Wikipedia

    en.wikipedia.org/wiki/Controlled-release_fertiliser

    Controlled-release fertilizer is also known as controlled-availability fertilizer, delayed-release fertilizer, metered-release fertilizer, or slow-acting fertilizer. Usually CRF refers to nitrogen-based fertilizers. Slow- and controlled-release involve only 0.15% (562,000 tons) of the fertilizer market (1995).

  7. Fertilizer - Wikipedia

    en.wikipedia.org/wiki/Fertilizer

    A fertilizer (American English) or fertiliser (British English) is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply plant nutrients. Fertilizers may be distinct from liming materials or other non-nutrient soil amendments. Many sources of fertilizer exist, both natural and industrially produced. [1]

  8. Bone meal - Wikipedia

    en.wikipedia.org/wiki/Bone_meal

    Bone meal provides phosphorus and calcium to plants, along with a largely inconsequential amount of nitrogen. [4] The N-P-K rating of bone meal is typically 3–15–0 [5] along with a calcium content of around 12% (18% CaO equiv.), [6] although it can vary quite a bit depending on the source from 1–13–0 to 3–22–0.

  9. Rotational grazing - Wikipedia

    en.wikipedia.org/wiki/Rotational_grazing

    Diagram of rotational grazing, showing the use of paddocks, each providing food and water for the livestock for a chosen period. In agriculture, rotational grazing, as opposed to continuous grazing, describes many systems of pasturing, whereby livestock are moved to portions of the pasture, called paddocks, while the other portions rest. [1]