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  2. Blood meal - Wikipedia

    en.wikipedia.org/wiki/Blood_meal

    Blood meal is a dry, inert powder made from blood, used as a high-nitrogen organic fertilizer and a high protein animal feed. N = 13.25%, P = 1.0%, K = 0.6%. It is one of the highest non-synthetic sources of nitrogen. It usually comes from cattle or hogs as a slaughterhouse by-product.

  3. Animal-free agriculture - Wikipedia

    en.wikipedia.org/wiki/Animal-free_agriculture

    Vegan organic farming methods do not use animal products or by-products, such as blood meal, fish products, bone meal, feces, or other animal-origin matter because the production of these materials is viewed as either harming animals directly, or as associated with the exploitation and consequent suffering of animals.

  4. Environmental impacts of animal agriculture - Wikipedia

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

    However, manure also is a valuable source of nutrients and organic matter when used as a fertilizer. [265] Manure was used as a fertilizer on about 6,400,000 hectares (15.8 million acres) of US cropland in 2006, with manure from cattle accounting for nearly 70% of manure applications to soybeans and about 80% or more of manure applications to ...

  5. Organic fertilizer - Wikipedia

    en.wikipedia.org/wiki/Organic_fertilizer

    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.

  6. Health effects of pesticides - Wikipedia

    en.wikipedia.org/wiki/Health_effects_of_pesticides

    Health effects of pesticides may be acute or delayed in those who are exposed. [1] Acute effects can include pesticide poisoning, which may be a medical emergency. [2] Strong evidence exists for other, long-term negative health outcomes from pesticide exposure including birth defects, fetal death, [3] neurodevelopmental disorder, [4] cancer, and neurologic illness including Parkinson's disease ...

  7. Fertilizer - Wikipedia

    en.wikipedia.org/wiki/Fertilizer

    Organic fertilizers can also describe commercially available and frequently packaged products that strive to follow the expectations and restrictions adopted by "organic agriculture" and "environmentally friendly" gardening – related systems of food and plant production that significantly limit or strictly avoid the use of synthetic ...