Search Results       Your search for [subject]Phosphate rock -- Iloilo City returned 1 record.           Evaluation on the use of agriculture lime and rock phosphate in terms of pH and availability indices of NPK as related to the fertility of two acid upland soils. by Maquiling, Helen J.; 1981. Subject: Liming of soils -- Iloilo City; Phosphate rock -- Iloilo City; Soil fertility; Soils -- Phosphorus content.          Add to Book Cart Relevance: 26.69%