USING ROCK PHOSPHATE AS PHOSPHATIC FERTILIZER AFTER ITS COMBINED APPLICATION WITH MUNICIPAL SOLID WASTE AND SOLUBLIZING BACTERIA

摘要

The application of municipal solid waste compost (MSWC), rock phosphate (RP) and phosphate solublizing bacteria (PSB) as soil amendment is of economic and environmental interest. Rock phosphate is a basic raw material or the production of phosphatic fertilizers. Solubility of RP is negligible in alkaline calcareous soils. Greenhouse experiment was conducted to study the possibilities of using rock phosphate as a source of phosphorus by its combined application with MSW and PSB. Wheat was sown in pots under greenhouse conditions. The treatments included application of P fertilizer =90 kg ha~(-1), RP=1000 kg ha~(-1), RP=1000 kg ha~(-1) with MSWC=10 and 20t ha~(-1).