A new study has revealed that spherulitic calcium apatite (SPA) may be an effective alternative to traditional phosphate sources used in fertilizers. SPA is a naturally occurring mineral form of calcium apatite that is found in igneous rocks and soils. It is known to be a good source of phosphorus, a key nutrient for plant growth. The study, conducted by researchers from the Institute of Geological Sciences of the Chinese Academy of Sciences, analyzed the effectiveness of SPA as a fertilizer. The results showed that SPA has a higher phosphorus absorption capacity than traditional phosphate sources, such as monocalcium phosphate and ammonium phosphate. Moreover, SPA has a higher solubility, making it more available to plants. The study also showed that SPA has a low environmental impact, as it does not contain any hazardous chemicals. These findings could have a major impact on the agricultural industry, as SPA could be used as an effective and sustainable fertilizer.

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source: Phys.org