Phosphogypsum and Organic Matter: Sustainable Solution for the Rehabilitation of Saline Lands in the Saloum Delta, Senegal

A sustainable solution for rehabilitating saline lands in the Saloum Delta, Senegal, has been demonstrated through the use of phosphogypsum combined with organic matter such as cow dung, groundnut shell, and poultry manure. This innovative approach significantly reduced soil salinity, upgrading abandoned rice fields from extremely saline (electrical conductivity > 2000 μS/cm) to non-saline (< 500 μS/cm). The technique led to impressive rice yields, averaging 6.17 tons per hectare for the variety Sahel 108, with a total estimated production of 357.58 tons across 58 hectares. The study highlights the potential of this method to recover decades-old abandoned lands, emphasizing the need for widespread adoption and capacity-building among local stakeholders.

Sagna, B., Ndiaye, A., Thiam, I., Thiam, K., & Sow, A. K. D. (2025). Phosphogypsum and Organic Matter: Sustainable Solution for the Rehabilitation of Saline Lands in the Saloum Delta, Senegal. Journal of Agricultural Chemistry and Environment, 14(02), 202–216. https://doi.org/10.4236/jacen.2025.142014