Fire in the wet tropical climate of Indonesia is not a new phenomenon. The 'Great Fire of Borneo' in 1982-83 was one of the worst fire events in recent decades. Small holders clearing land for cultivation were primarily blamed for starting fires that rapidly spread out of control. Subsequent fires linked to El Nino-Southern Oscilation occurred in 1987, 1991 1994 and most recently in 1997-98.

PT Musi Hutan Persada, a forestry company growing wood for pulp in South Sumatra manages about 200 000 ha of forest plantations, 90% of which consists of Acacia mangium. Most of the plantations are in an area with high rainfall and on red-yellow podzolic soil with inherently poor fertility and low pH. Inter-rotation site productivity and management have been identified by the company as one of the crucial issues for sustaining the long-term productivity of its plantations. This paper describes the study plan for inter-rotation site productivity and management of A.