PEMBIAKAN VEGETATIF STEK JENIS Koompassia excelsa (Becc.) Taub. SISTEM KOFFCO

Abstract

Koompassia excelsa (Becc.) Taub. is one of the nurse tree species that produces forest honey. This research was aimed at giving information on producing Koompassia excelsa (Becc.) Taub. seedlings through KOFFCO vegetative propagation system. The research was conducted at the green house of Balai Besar Penelitian Dipterokarpa in Samarinda. A completely randomized design with 2 x 3 factorial and 3 replications were used in this study. Each replication consisted of 30 cuttings. The first factor, i.e. cutting material, consisted of 2 levels: S0: shoot cutting and S1: stem cutting. The second factor, i.e. root-stimulating agent, consisted of 3 levels: P0: without root-stimulating agent(control), P1: smearing Rootone-F rootstimulating agent, and P2: soaking at the atonic root-stimulating agent for 1 hour with a liquid concentration of 100 ml/1liter water. The results showed that the average percentage of cuttings-grown- seedlings was 82.4% from rooted cuttings, as a whole. Stem and shoot cuttings produced 76% and 88.67% of seedlings, respectively. Based on statistical analyses both treatments were highly significantly different. However, the applications of smearing Rootone-F root-stimulating agent, soaking the stem part that will grow at the atonic liquid with 100 mml/ liter water concentration for 1 hour and control were not significantly different, with the percentage of cuttings-grown-seedlings were 80%, 84%, and 83%, respectively.