Plant branches were cut from Chiang Mai university and Doi-pui National park, six of Fagaceae and four of Leguminosae families, approximately 4 m in length and 6-8 cm were used as bait trap . put to the Doi Suthep-pui National Park from March -June 2015
To standardize data of ambrosia beetles abundance. After five weeks of exposure, the plant branches were measured and weighed back to the office at Chiang Mai university