Invasive Species Compendium

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Abstract

Some properties of juvenile wood of rasamala (Altingia excelsa Noronha).

Abstract

Indonesia is now developing plantations with short rotations for supporting the timber industry, particularly the pulp and paper industry. One of the tree species recommended for this purpose is rasamala. This paper reports investigations of some of the juvenile wood properties of the species, since these are known to be poor. Samples for investigation were taken from different parts of the tree, viz. bottom, middle and top (free branch). Juvenile wood was located 10-12 cm from the soft core at the bottom of the tree, and 14-16 cm from the soft core at the middle and top parts of the tree. The average moisture content of the juvenile wood was 19.02% and total swelling about 8.7%. These values are higher than that of solid (adult) wood. The average specific gravity of the juvenile wood was 0.8, and solubility in cold water, hot water, and alcohol/benzene was of 3.18, 5.82 and 14.92%, respectively. These solubility values are lower than that of mature wood.