GROWTH AND SURVIVAL OF CALAMUS SUBINERMIS in PROVENANCE TRIALS IN SABAH, MALAYSIA

A study was carried out to assess the growth and survival of 14-year-old provenance cum progeny trials of calamus subinermis at three different sites and soil types in sabah, malaysia. these sites were kolapis a, a logged-over forest with sandy clay loam; segaliud lokan, an acacia mangium plantation with sandy loam to sandy clay loam and sook, scrub dominated by baeckia frustescens with gleyic podzol. high survival percentage (more than 85%) was observed in sook while high mortality rate (more than 60%) was noticed in both kolapis a and segaliud lokan. mean annual growth rates of c. subinermis were 1.36, 3.34 and 3.78 m year-1 in sook, segaliud lokan and kolapis a respectively. the growth performance of c. subinermis was more affected by soil type or soil condition than by provenance.