Growth of Acacia auriculiformis in trial models and application of advanced technology in clones, silviculture for sawlog production in Quang Tri province

Abstract

This article introduces the results of application of technical progess in seedlings and silviculture to build a Acacia auriculiformis plantation trial for sawlog in Quang Tri, conducted by the Forest Science Centre for North Central Vietnam since 2017 to 2021. After 50 months, the trials had good growth and high survival rates (>90%). The results showed that there were significant differences in growth and stem quality of Acacia auriculiformis clones. The mean productivity of the trials was 20.4 m 3 /ha/year, ranging from 18.7 to 23.6 m 3 /ha/year. Productivity of 4 clones (Clt26, Clt43, Clt57, Clt7) were over 20.0 m 3 /ha/year that proved to be promising clones for plantation forest in mountainous areas of Quang Tri province. The tissue culture of Acacia auriculiformis trial had better growth than the cuttings of Acacia auriculiformis trial, however, there was no significant difference in terms of stem quality. The mean productivities of tissue culture and cuttings trials were 20.7 m 3 /ha/year and 19.2 m 3 /ha/year, respectively