STUDI SERANGAN RAYAP PADA TANAMAN AKASIA (Acacia crassicarpa) di lahan HTI PT MUARA SUNGAI LANDAK KABUPATEN MEMPAWAH

Termites are small insects, similar to ants, found in many places, in forests, yards, gardens and even in the house. Termite nests are found in damp places in the soil and wet logs, but some live in dry wood. The main food is wood and materials from cellulose and fungi. The area of work is 13,000 hectares. The basis for the division of land carried out and land use planning PT. Muara Sungai Landak has 2,500 ha of land for planting Acacia Crassicarpa plants. This research was conducted in the RKT 16/17 HTI area of PT Muara Sungai Landak. The study used a field survey method, by laying the first plot using purposive sampling, laying the second plot and so on using systematic sampling. The termite sampling taken in this study was the termite soldier. Termite samples were put in a vial bottle containing 70% alcohol. The analysis used two calculations, namely the calculation of the incidence of attacks and the intensity of the attacks. The results of the study of 46 plots with a total of 2944 trees, found 260 trees with mild attacks, 25 trees with moderate attacks, 9 with severe trees. The type of termite found was Nasutitermes longinasoides and Coptotermes sp. The incidence rate of termite attack occurred in all plots, namely 46 observation plots with the highest attack incidence rate of 21.31% and the highest intensity of attack 47.18%.Keyword: Acacia crassicarpa, Event of Attacks, Intensity of attack, PT Muara Sungai Landak, termites