Preliminary study on the suitable method for formation of aloeswood in Kritsana tree

• Published in: Thai Agricultural Research Journal (Thailand)
• Main Authors: Sermsakul Pojanaroon(Department of Agriculture, Bangkok (Thailand). Phurua Highland Agricultural Experiment Station), Chawaeng Kaewrak(Department of Agriculture, Bangkok (Thailand). Phurua Highland Agricultural Experiment Station)
• Format: Journal Article
• Language: Thai
• Published: 01.01.2003
• Subjects: Aquilaria crassna; Mechanical methods; Thymelaeaceae; Trees; Wood; Wounds
• ISSN: 0125-8389

Preliminary study on the suitable method using mechanical injury for the formation of aloeswood in 4-years-Kritsana trees (Aquilaria crassna Pierre ex H. Lec.), grown at Phurua Highland Agricultural Experiment Station, Phurua, Loei province (950 m asl, 17 deg 17 lipda north 101 deg 35 lipda east) was carried out during February, 2001-February, 2002. The changes of wood around injury wound spot were mainly observed. One month after wounding, the pale discoloration was occurred, followed with darker yellowish brown discoloration after 3 months, and changing to dark brown with 8-10 months with odor by burning. Wood blocks collected from living trees, 10 months after wounding were compared among the different mechanical treatments. Results showed that holed with screws, inflicted with chisel, barked with hatchet on the trunk gave dark yellowish brown to dark brown discoloration near injury (5-10 mm from the cut end), while beated with nails gave dark brown to black occurring by the interaction between ferric oxide and fibers, whereas beated with hammer gave only little discoloration. The width of the discoloration could be fond that holed with screws (1.27 cm) and inflicted with wide chisel had the widest discoloration (0.725 and 0.722 mm), while inflicted with narrow chisel and holed with screws (1.11cm) had the width of 0.706 and 0.700 mm respectively, whereas beated with nails (2.54 cm long) and beated with hammer had the narrowest (0.519 and 0.500 mm) at p LT= 0.05. Results revealed that the mechanical injury could be used for the formation of aloeswood in Kritsana tree.