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A farmer spreading manure to improve soil fertility. 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.
Organic fertilizer. A cement reservoir containing cow manure mixed with water. This is common in rural Hainan Province, China. Note the bucket on a stick that the farmer uses to apply the mixture. Liming soil. Bone meal and meat meal can be added to soil to stimulate root growth and to release phosphorus. Organic fertilizers are fertilizers ...
Fertilaid. Fertiliser use in Nepal. Fertilizer burn. Fertilizer subsidies in Sub-Saharan Africa. Foliar feeding. Frank–Caro process.
A biofertilizer is a substance which contains living micro-organisms which, when applied to seeds, plant surfaces, or soil, colonize the rhizosphere or the interior of the plant and promotes growth by increasing the supply or availability of primary nutrients to the host plant. [1] Biofertilizers add nutrients through the natural processes of ...
Manure. Animal manure is often a mixture of animal feces and bedding straw, as in this example from a stable. Manure is organic matter that is used as organic fertilizer in agriculture. Most manure consists of animal feces; other sources include compost and green manure. Manures contribute to the fertility of soil by adding organic matter and ...
The NPK analysis label. Fertilizers are usually labeled with three numbers, as in 18-20-10, indicating the relative content of the primary macronutrients nitrogen (N), phosphorus (P), and potassium (K), respectively. More precisely, the first number ("N value") is the percentage of elemental nitrogen by weight in the fertilizer; that is, the ...