MANFAAT SERASAH DAN BIOMAS DALAM MENDUKUNG KETERSEDIAAN HARA TANAH PADA HUTAN TANAMAN Acacia mangium (The Benefit of Litter and Harvest Residues in the Nutrient Reserves of Acacia mangium Plantation)

Plantation forests in Indonesia have been developed mostly on marginal land predominantly categorized as Red Yellow Podsolic soil (Ulitosol and Oxisol) which is inherently poor in nutrient reserves. The use of fast growing species and short rotation such as Acacia mangium could deplete nutrient from the soil in a rapid rate. This paper discusses the role of litter and harvest residues in the nutri