UJI STEK PUCUK DAMAR (Agathis loranthifolia Salisb.) PADA BERBAGAI MEDIA DAN ZAT PENGATUR TUMBUH

Abstract

Damar tree (Agathis loranthifolia Salisb.) is a multipurpose tree species which its wood and resin have high commercial value. Unfortunately planting stock production is problematic as the seed belongs to semi-recalcitrant seed. Vegetative propagation offers a feasible solution for planting stocks production. The aim of this study wass to find suitable media (combination of zeolite, cocodust and burned paddy husk) and ranges of hormone concentrations for shoot cutting of damar. The study was carried out at the glasshouse equipped with KOFFCO system. The result showed that media and hormone significantly affected root formation of the cuttings. The highest rooted cutting (67%) was achieved by mix media of coconut dust and paddy husk of 2 : 1 (v : v). Optimum root growth was stimulated by 200 ppm of IBA.