UJI COBA PERTUMBUHAN TIGA KELAS MUTU BIBIT MERANTI MERAH DI TIGA HAK PENGUSAHAAN HUTAN MODEL DI KALIMANTAN

Abstract

Trials on growth of three seedling quality classes of red meranti species were conducted in three forest concession areas in Kalimantan, i.e. PT Sari Bumi Kusuma, PT IKANI, and PT Erna Djuliawati. The purpose of this research was to find information on survival rate and growth of red meranti seedlings after one year planted in the field under the silin program. Treatment consisted of three species and three seedlings quality classes. Factorial randomized complete block design with four replications was used for this study. Each treatment consisting of 100 plants were planted with 20 m x 2.5 m spacing. The total number of plants observed were 3,600 plants in PT SBK and 2,400 plants in PT IKANI and PT Erna Djuliawati respectively. The results show that species and seedling quality, interaction between species and seedling quality and block did not significantly affect the survival rate in both concession areas (PT SBK and PT IKANI). However, in these concession areas both species and seedling quality gave significant difference on height and diameter growth. The height and diameter growth of S. leprosula were higher than other species. The values were as much as 146.6 cm and 1.6 cm respectively in PT SBK and as much as 87.5 cm and 1.6 cm respectively in PT IKANI. The height and diameter growth of seedling quality one was higher than other seedling quality classes as much as 142.6 cm and 1.6 cm respectively in PT SBK, as much as 86.5 cm and 0.8 cm respectively in PT IKANI and as much as 164.2 cm and 1.6 cm respectively in PT Erna Djuliawati. Therefore Shorea leprosula from wilding with seedling quality class one was recommended for planting under the silin program (Selective Cutting and Intensive Planting System).