PENGARUH JARAK TANAM PADA PERTUMBUHAN TIGA JENIS MERANTI DI HUTAN PENELITIAN HAURBENTES

Abstract

Defining the most suitable planting spacing in plantation forest is usually aimed at producing straight uniform stem, healthy and high economic value of forest stand. Experiment was conducted to determine influence of spacing and tree species of Shorea leprosula, S.mecistopteryx, and S.selanica on height and diameter growth of 13 years old plantation. This experiment was arranged in a completely randomized design with 2x3 factorial design where treatment A was spacing and treatment B was meranti species. There were two replications in each treatment combination and there were 10 trees for each replication. The results showed that there were no influence of spacing (A), species (B) and their interaction (AB) on the growth. However comparing with other meranti species S.leprosula grew better. Average tree growth of 2 m x 3 m spacing for S.leprosula was 14.2 m height and 24.7 cm diameter., S.selanica 16.1 m height and 20.8 cm diameter., S.mecistopteryx 13.7 m height and 20.6 cm diameter. For 3 m x 3 m spacing average height of S.leprosula was 13.0 m and 27.8 cm in diameter., S.selanica 12,8 m height and 22,0 cm diameter and S. mecistopteryx 14.5 m and 19.9 cm for height and diameter.