Phi Quang Dien
1. INTRODUCTION
Casuarina was introduced into Vietnam from unknown sources in 1896 (Nguyen Huu Hien, 1977). In Vietnam, it is called FILAO’ or PHILAO’ by people living in the north , XI LAU’ by people living in the northern central and DUONG by people living in the south and the southern central regions.
The casuarina planted in Vietnam is C. equisetifolia forest (Nguyen Huu Hien, 1977).
C. equisetifoliawas first planted on sand at Nghe Tinh coast. It grew well and has been planted widely on coastal sand in other provinces since 1915.
In Vietnam, this species is a moderate -sized tree, 20-25 m high, with straight stem, many branches and dense, pyramid shaped crown. Young branches are only 2 mm in diameter, soft, round and 10 -35 cm long. At each node there are minute leaf teeth in whorls of 5-8. The leaves do not photosynthesise; young branchlets are the photosynthetic organs.
C. equisetifolia trees in Vietnam are monoecious (individuals having male and female flowers) but there are some trees with male flowers only.
The species needs complete light, is evergreen and grows all year. It grows very quickly in the rainy months.
Casuarina grows well on heavy clay soils or soils derived from laterite.
C. equisetifoliafruit ripens in October and November. On the same tree there are both ripened and young fruit. Seeds are flat with a very thin wing. Growing on fertile soil, C. equisetifolia can bear fruit from 3 years of age and from the age of 4 or 5 years it carries heavy crops.
Seed weight differs from place to place 1.68 g at Ninh Chu in the south, 1,65 g at Non Nuoc in the southern central region, 1.45 g at Thach Lien in the central region to 1.29 g at Hai Thinh in the north.
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
- results of the research subject on genetic conservation of forest plant species up to 1993
- trials of planting liquidambar formosana on soil types having rhodomyrtus, melastoma sp., cratoxylum cochinchinensis, eupatorium odoratum and shrubs at huu lung
- some initial basis in the normative making of timber exploitation
- preliminary determination of forest tree species for forest economical regions ( 1983 - 1985)
- Research on casuarina equisetifolia
