Evaluation of Phosphogypsum and Pore Volume Water Rates for Reclaiming Saline-Sodic Cambisols of Metehara Sugar Estate, Central Rift Valley of Ethiopia
A laboratory column study on Metehara Sugar Estate's saline-sodic Cambisols determined that applying phosphogypsum at 100% or higher of the gypsum requirement combined with 3–4 pore volumes of leaching water is the most effective strategy for reducing soil salinity and sodicity to levels suitable for crop production, though field validation is recommended before finalizing implementation guidelines.