Effects of girdling on wood properties and drying characteristics of Acacia mangium
2015
Saefudin | Yuniarti K. | Damayanti R. | Basri E. | Wahyudi I.
Basic properties and drying quality of 9-year-old Acacia mangium wood from plantation of the Forest Research and Development Agency in Bogor, Indonesia were studied in order to evaluate effects of girdling periods (0, 4 and 8 months) applied before cutting the trees. Results showed that 8 months of girdling resulted in 50.8% reduction in initial (green) moisturecontent of wood i.e. from 122 to 60% with no occurrence of end splitting in logs during felling. In general, wood quality of girdled tree is better than that of non-girdled tree. Wood density and holocellulose content increased, while tangential and radial shrinkage ratio, ash, silica, lignin, wood pentose and extractivecontents decreased. Based on drying characteristics, basic drying schedule for 8-month-girdled wood was at temperature of 50–80 oC and relative humidity of 80–28%, while that for 4-month-girdled wood and control, temperature of 40–65 oC and relative humidity of 83–38%. The longer girdling period also decreased the percentage of honeycombing and degree of deformation during drying.
Показать больше [+] Меньше [-]Ключевые слова АГРОВОК
Библиографическая информация
Эту запись предоставил Universiti Putra Malaysia