Rochagem: a aplicação de pó de rocha como alternativa sustentável aos fertilizantes agrícolas no Brasil: uma revisão

Abstract

Brazil has progressively consolidated itself into an agro-export economy. It is a known fact that as agricultural production increases, the consumption of chemical fertilizers intensifies. About 80% of the fertilizer consumed in the country is imported, and 5% of the amount produced in Brazil is exported to nearby countries. Stonemeal, term applied to evidence the technique of natural soil fertilization with the use of rock dust, emerges as an excellent and sustainable alternative to conventional agricultural fertilizers, once Brazil has an exceptional geodiversity, presenting distinguished types of rocks with different particularities in different locations; in addition, rock powder is advantageous in the social and environmental sphere. Therefore, the main objective of this work was to carry out a survey of data from the specialized literature, in order to compile and compare the results obtained regarding the efficiency and importance of stonemeal. In order to develop this work, an extensive bibliographical research was carried out. At first, academic works, dissertations, articles, books, annals and theses were gathered. The main databases consulted were Google Scholar; Scielo and Science Direct. Based on the analyzed works, it was verified that the stonemeal contributes to the rehabilitation and preservation of soil properties, in addition to reduce the application of chemical inputs, mainly those aggregated in formulas with high solubility. In general, the application of rock dust as an alternative to conventional fertilizers is ecologically and economically effective.