Phosphate sludge: opportunities for use as a fertilizer in deficient.

Phosphate sludge (PS) is an industrial by-product produced in huge quantities by the phosphate beneficiation plants Morocco. In order to valorize this by-product, it was examined for its potential use as a soil fertilizer. The physicochemical properties, elemental and mineral content, morphological structure, component stability of raw PS were investigated. addition, pathogenicity, phytotoxicity, capacity promote plant growth deficient sandy have been studied. obtained results showed that characterized low values moisture (2.10%), electrical conductivity (EC) (0.77 mS/cm), organic matter (OM) (0.61%), with slightly alkaline pH (8.20). Nevertheless, material carried interesting content fertilizing elements such phosphorus (P2O5) 20.01%, calcium (CaO) 39.72%, magnesium (MgO) 2.33%. Thus, did not present any pathogenic or phytotoxic risk high increase tomato than control only soil. conclusion, study could provide primary practical guidance application soils texture.