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  2. Organic fertilizer - Wikipedia

    en.wikipedia.org/wiki/Organic_fertilizer

    Organic fertilizers are fertilizers that are naturally produced. [1] 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 ...

  3. Soil fertility - Wikipedia

    en.wikipedia.org/wiki/Soil_fertility

    Slow-release fertilizers may reduce leaching loss of nutrients and may make the nutrients that they provide available over a longer period of time. Soil fertility is a complex process that involves the constant cycling of nutrients between organic and inorganic forms.

  4. Slurry pit - Wikipedia

    en.wikipedia.org/wiki/Slurry_pit

    A fenced slurry pit. A slurry pit (also farm slurry pit, slurry tank, slurry lagoon, and slurry store) is a hole, a dam, or a circular concrete structure where farmers gather all animal waste and unusable organic matter, such as hay, and the run-off water from the washing of dairies, stables, and barns, in order to convert the slurry, over a lengthy period of time, into fertilizer that can be ...

  5. Immobilization (soil science) - Wikipedia

    en.wikipedia.org/wiki/Immobilization_(soil_science)

    Immobilization in soil science is the conversion of inorganic compounds to organic compounds by microorganisms or plants by which the compounds become inaccessible to plants. [1] Immobilization is the opposite of mineralization. In immobilization, inorganic nutrients are taken up by soil microbes and become unavailable for plant uptake. [2]

  6. Vermicompost - Wikipedia

    en.wikipedia.org/wiki/Vermicompost

    Containing water-soluble nutrients, vermicompost is a nutrient-rich organic fertilizer and soil conditioner in a form that is relatively easy for plants to absorb. [3] Worm castings are sometimes used as an organic fertilizer. Because the earthworms grind and uniformly mix minerals in simple forms, plants need only minimal effort to obtain them.

  7. Nutrient cycle - Wikipedia

    en.wikipedia.org/wiki/Nutrient_cycle

    A nutrient cycle (or ecological recycling) is the movement and exchange of inorganic and organic matter back into the production of matter. Energy flow is a unidirectional and noncyclic pathway, whereas the movement of mineral nutrients is cyclic.

  8. 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 ...

  9. Nitrogen cycle - Wikipedia

    en.wikipedia.org/wiki/Nitrogen_cycle

    Nitrogen is present in the environment in a wide variety of chemical forms including organic nitrogen, ammonium (NH + 4), nitrite (NO − 2), nitrate (NO − 3), nitrous oxide (N 2 O), nitric oxide (NO) or inorganic nitrogen gas (N 2). Organic nitrogen may be in the form of a living organism, humus or in the intermediate products of organic ...