Microrganismos: alternativas para a solubilização de fosfatos na agricultura

Abstract

In this work of literature sought to contextualize the biogeochemical cycling of phosphorus, the location and situation of world phosphate deposits and Brazilian main mineralogical formations that gave rise to these deposits (sedimentary or igneous), world consumption and Brazilian phosphate, prospects future for the world market and in Brazil, exporting and importing countries. The dynamics of phosphorus in soil, weathering, soil formation in Rio Grande do Sul, importance of phosphorus for plants, and the importance of organic matter for recycling and solubilization of phosphates were also addressed. Additionally processes mediated by microorganisms (fungi, bacteria and actinomycetes), as possible alternatives to the solubilization of rock phosphates in substitution of industrial fertilizer inputs, and the use of powdered-rock as a long-term alternative for the restoration and balance of soil phosphorus and eutrophication minimization were discussed.