Phosphorus (P) deficiency is a major limiting factor in many acid Malaysian soils. The amount of P in these soils are either inherently low or are fixed in forms that are unavailable to plants. Most studies demonstrated that more P is required on inland soil than the coastal soils in order to achieve a reasonable yield. High P rate is needed to overcome the high P-fixation, mainly due to high iron and aluminium oxides and hydroxides content in the clay fraction (Chan, 1982; Ng, 1986; Goh and Chew, 1995).

Main Researcher: Dr. Zulkifli Hashim      
Email: zulkif@mpob.gov.my