PENGARUH MEDIA DAN NAUNGAN TERHADAP MUTU BIBIT SUREN (Toona sureni MERR.)

Abstract

Seedling quality is one ofdetermining factors for successful forest establishment and land rehabilitation programs, as good quality seedlings will yield tree with high productivity level. Media which have high content oforganic matter and plant nutrients are reguired seedling growth. Generally, top soil is used for seedling growing medium. However, such practice is inappropriate due to its adverse effect to the ecosystem. A substitute is therefore needed.In this study, soil, coconut husk, or combination ofthe two were evaluated as growing medium, either alone or being combined with rice husk. The different components in a medium were set at equal proportion. Seedlings were grown eitherwith shading at40%or 70% or none at all. The experiment was arranged in Completely Randomized Design with ten replicates consisting of 10 seedlings per replicate.The result showed that soil + coconut husk +rice husk (A6) with 40% shading (B2) gave the best growth for 5 month suren's seedling that have 2.97 mm ofdiameter, 25.1cmofheight, 94.0%survival rate and0.12 ofquality index.