Nguyen Sy Giao
Nguyen Thi Nham
Than Van Dua
INTRODUCTION
Cercospora needle blight is a most serious disease for many pine species in the seedling stage in the nursery or at 1-3 years after planting in the field. This is a very important reason why planting pines have met considerable difficulties in recent years, especially P.merkusii. Therefore, many production organizations have concluded that Cercospora needle blight is the main reason for the success or failure of pine planting work.
Since 1965, the Forest Research Institute has started investigations on this disease with different phases as follows,
* 1965 : surveys to find the disease
* 1966 – 1968: basic and applied research
* 1969 – 1970: application of results in one forest enterprise (Yendung, Habac).
* 1973 : development research in 3 forest enterprises and stations belonging to 2 provinces: Habac and Quangninh.
Latest news
- Project: Study on integrated management of insect pests and diseases on Docynia indica in northern Vietnam
- Project: Study on integrated pest management of major leaf insect pests and stem borer beetles in Acacia hybrid, A. mangium and A. auriculiformis in Vietnam
- 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)
- Project: Pilot plantation and completion of planting techniques of technologically advanced germplasm of Acacia auriculiformis (AA42, AA53, AA56, AA92, AA95) for sawlog in the southeast and south central.
- 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
- growth situation of some pine species at dailai from 1975 to 1977
- preliminary study on increment rules to serve as temporary basis for p.kesiya management at lamdong province (1977)
- study on biological characteristics of cyrtotrachelus longimarus worms and control measures
- 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 )
