“…Previous studies on phosphate adsorption on Fiji soils have shown that significant quantities of added P are strongly adsorbed by soils, especially by the Al and Fe oxyhydroxide materials, and only limited quantities (10-30%) of fertilizer P are utilized by plants (Chee et al, 1978;Morrison, 1978;Dandy and Morrison, 1980;Morrison et al, 2005). Although Singh (1982) made some preliminary studies, there has not been, however, any detailed study of the conditions under which fixed P becomes available over time to plants.…”