TSP FOR LONG-TERM SOIL FERTILITY SRI LANKA FUNDAMENTALS EXPLAINED

Looking at: Usage of single superphosphate fertiliser made employing Eppawala rock phosphate like a source of phosphorous for rice cultivationMineralogical, chemical and solubility variations while in the Eppawala phosphate deposit of Sri Lanka — a situation for selective mining for fertilizers... In that product, rice demand is usually a functio