Abstract
ABSTRACT Early performance of nine indigenous and one exotic shade-tolerant timber species planted under an 8-year-old Acacia mangium plantation on an Imperata cylindrica dominated grassland site was studied for three years in South Kalimantan, Indonesia. The aim was to investigate the differences in early survival and growth between these species. Twenty seedlings of each species were planted in a completely randomized design between the rows of A. mangium. Three years after planting, Anisoptera marginata and Eusideroxylon zwageri showed no mortality, Swietenia macrophylla had a survival of 85%, Dipterocarpus grandiflorus 80% and Shorea balangeran 70%. Other dipterocarps had a mortality of 35–80% during the third year when serious drought occurred. S. macrophylla had a slow initial height growth but thereafter clearly outperformed other species, reaching a cumulative height increment of 267 cm during 36 mo. Height increments of A. marginata, S. balangeran and E. zwageri were 121, 97 and 78 cm, respective...
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