Non-destructive detection of tree deterioration due to termite attack in plant conservation areas

Abstract

Cibodas Botanic Gardens (CBG) is an ex-situ conservation area in tropical highlands. Termites are one of the nuisance organisms in the collection that have conservation value. The number of attacks and the intensity of termite attacks require more strict attention. The main problem in tree health analysis is the difficulty in detecting internal weathering due to attacks by wood-destroying organisms which causes damage to the tree's core (heart rot) and butt rot. Arborsonic is a tool used and developed to detect and assess tree damage, especially to the trunk. This study aimed to analyze the deterioration of the main trunk of a living tree with visual signs of termite attack using a non-destructive method. Termite observation plots were made in 4 replications to determine the type of termites that attack. Observations on termite baits in 4 plots showed no attack on the baits. Observations on 12 sample trees tested in 4 plots showed low-intensity damage. Visual signs of termite attack can be used as a sign of wood decay, but the effect is minor.