Effect of N and K Fertilizers on Nutrient Leaching and Groundwater Quality under Mature Oil Palm in Sabah during the Monsoon Period

Petronella G. Ah Tung, Mohd Kamil Yusoff, Nik Muhamad Majid, Goh Kah Joo and Gan Huang Huang

American Journal of Applied Sciences 6 ( 10 ): 1788 - 1799 , 2009