Pengaruh Kedalaman Lubang Injeksi dan Bagian Batang Injeksi terhadap Pembentukan Gubal Gaharu (Aquilaria Malaccensis Lamk.)

Abstract

Indonesia is the world's largest agarwood producer and a place to grow some of the endemic species of the genus Aquilaria commercial agarwood.Agarwood is currently on the verge of extinction, it is necessary to increase in production agarwood. The objective of this research was to measure the formation and quality of agarwood with a combination of treatments is the depth of the hole injection and injection stem of the tree A. malaccensis. The research was conducted in the Land of trees A. malaccensis owned by Mr. Petro Sembiring,in Tuntungan Village, Kecamatan Medan Tuntungan, Medan. This research used a factorial completely randomized design with 2 factors that depth of the injection hole (3 cm, 5 cm, and 7 cm )and and the injection stem (rootstock, middle trunk, and upper trunk). Inoculum were injected as much as 5 ml in each hole.The parameters measured werepercentage of infection, incubation time, development of infection, the quality of gubal, and reisolasi Fusarium sp. The results showed that the combination of the depth of the hole injection to injection stem had no significant effect on all parameters were observed. Inoculum infections occurred in the fourth week after the injection of inoculum. The Color change from white to brown occurred and there is no strong aroma of agarwood formed. Reisolasi Fusarium sp. show agarwood formed by injection of inoculum. The percentage of infection occurred at a depth of 3 cm and the smallest percentage of injection occurred at a depth of 5 cm.