The objective of the research was to find the effect of foliar fertilizer formulated from Shrimps Shell Compost Extract (SSCE) on common spear rot of oil palm seedling caused by Ceratocystis sp. The research was conducted in Phytopathology Laboratory and experiment field of Plant Pest and Disease Department, Faculty of Agriculture, Sriwijaya University from November 2008 until January 2009. The…