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2. Phosphate rich organic manure - Wikipedia

   en.wikipedia.org/wiki/Phosphate_rich_organic_manure

   Phosphate rich organic manure is a type of fertilizer used as an alternative to diammonium phosphate and single super phosphate.. Phosphorus is required by all plants but is limited in soil, creating a problem in agriculture In many areas phosphorus must be added to soil for the extensive plant growth that is desired for crop production.

3. Agrominerals - Wikipedia

   en.wikipedia.org/wiki/Agrominerals

   Agrominerals (also known as stone bread or petrol fertilizer) are minerals of importance to agriculture and horticulture industries for they can provide essential plant nutrients. [1] Some agrominerals occur naturally or can be processed to be used as alternative fertilizers or soil amendments . [ 1 ]

4. 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.

5. Fertilizer - Wikipedia

   en.wikipedia.org/wiki/Fertilizer

   Continuous use of high-cadmium fertilizer can contaminate soil (as shown in New Zealand) [93] and plants. [94] Limits to the cadmium content of phosphate fertilizers has been considered by the European Commission. [95] [96] [97] Producers of phosphorus-containing fertilizers now select phosphate rock based on the cadmium content. [68]

6. Calcium deficiency (plant disorder) - Wikipedia

   en.wikipedia.org/wiki/Calcium_deficiency_(plant...

   Soils containing high phosphorus are particularly susceptible to creating insoluble forms of calcium. [citation needed] Calcium and magnesium are opposed within the plant cells, and have antagonistic interactions. As a result, a homeostatic balance between Ca and Mg within the plant is necessary for optimal growth and proper development. [4]

7. Plant nutrition - Wikipedia

   en.wikipedia.org/wiki/Plant_nutrition

   The use of inorganic selenium fertilizers can increase selenium concentrations in edible crops and animal diets thereby improving animal health. [31] It is useful to apply a high phosphorus content fertilizer, such as bone meal, to perennials to help with successful root formation. [6]