NATURAL DURABILITY OF PALMYRAH AND NIBONG PALM STEMS

บทคัดย่อ

Field tests on the resistance against marine borers and open field graveyard of nibong and palmyrah were undertaken during July 1988 to November 1990. Marine trials were conducted by exposing the untreated and 3% CCA treated panels to the seawater for a period of 21 months, Inspections were made every 3 months. The graveyard tests were made at 2 sites representing forthern and southern part of the country. Teak and yang (Dipterocarpus alatus) were used as reference species. Inspections were made every 6 months. Sustained heavy attack after nine months. Of the graveyard tests for the duration of 2 years so far, results show that the durability of nibong and palmyrah is comparable with teak at both Results of marine trials indicate that the untreated panels of nibong and palmyrah palms sites. There is no apparent difference between decay and termite susceptibility of both species.