Doan Chuong, Vu Ngoc Toan
Luu Vinh Quan, Le Quang Lien
INTRODUCTION
Many damaging factors have a considerable in influence on the quality of Dendrocalamus forest, of which pest and disease are the most serious , especially worms which cause damage to young shoots. In some areas, 30-40% of young shoots have been destroyed so that the forest was degraded, depleted and lost. Therefore, study on the biological characteristics of this worm species is necessary and on that basis, suggestions and experiments can give effective control measures which contribute to the establishment of a complete technical system to increase yield and assist in the stable management of Dendrocalamus forest.
METHODS
Experiments were carried out for growing worms and at the same time, periodical surveys were done in permanent plots and in the forest, in order to determine their biological characteristics. Control measures were also applied in the forest.
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- Project: Research and develop an integrated management program for control of cinnamon pests in some main cinnamon growing areas (Northern mountainous region and Quang Nam province)
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- Project "Research on selection of varieties and intensive afforestation techniques of Prunus arborea (Blume) Kalkman for providing lager timber in the Northeast and Northwest regions, Vietnam"
Oldest news
- preliminary results of investigation on erosion status and measures for erosion prevention in soilsused for planting styrax tonkinensis at tuquan,hatuyen province (1974 - 1976)
- study on methods of regeneration and stable, continuos management of styrax tonkinensis forest on harvested areas(1971 - 1974 )
- study on planting techniques of styrax tonkinensis to supply raw material for paper industry intuquan district, tuyenquang province (1973 - 1976)
- study on growth rules of styrax tonkinensis stand for management of styrax forest to supply raw material for paper industry(1970 - 1973)
- study on planting soil of styrax tonkinensis to supply raw material for paper (1973-1977)
