Selection of Suitable Planting Technique of Gamar (Gmelina arborea Roxb.) for Different Sites of Bangladesh

摘要

Survival percentage and height growth of four types of planting propagules (stumps, poly bag seedling, stumps in poly bag and direct seed sowing)of Gmelina arborea were studied at Charaljani, Charkai, Keochia and Lawachara Silvicultural Research Stations located at different regions of Bangladesh. There was no significant differences in the average survival percentage among the polybag raised seedlings, stump planting, stumps in polybag and seeds directly sown in the fields. The average survival percentage was 45% to 91% at four sites at the age of 2 years 4 months at Charaljani, Keochia, Lawachara and 1 year at Charkai Silviculture Research Station The difference in total height growth of four types of planting propagules was found statistically significant. The highest height growth (263cm) was obtained in polybag raised seedling at Charaljani followed by 105 cm at Keochia, 88 cm at Lawachara at the age of 2 years 4 months and 139 cm at Charkai at the age of 1 year after out planting. However, there was no differences in height growth between the polybag seedlings and stumps in polybag at Lawachara Silviculture Research Station.