Resumo

HORTA, Carmo. Sustainability of phosphorus fertilisation: sources and forms of phosphate. Rev. de Ciências Agrárias [online]. 2015, vol.38, n.4, pp.473-483. ISSN 0871-018X.  https://doi.org/10.19084/RCA15136.

Phosphorus (P), which originates from a non-renewable natural resource, is essential for crop productivity, food security and human health. Despite being a finite resource its use has been increasing consistently over the last few decades. The major use of the phosphate rock is the manufacture of P fertiliser, agriculture also being the main source for nonpoint source P pollution, which causes the eutrophication of water bodies. Thus, there is great need for a sustainable use of P with special attention to agricultural use, namely P fertilisation. This paper explores P sources and forms that could be phytoavailable and hence used as fertilisers. Current trends in phosphorus fertilisation are also discussed with a focus on approaches to net decrease in phosphate rock exploitation and closure of phosphorous cycle use.

Palavras-chave : eutrophication; fertilisers; phosphate rock; soil test phosphorus; struvite.

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