Hoang Vinh Tuong
INTRODUCTION
There is a requirement for a large quantity of planting stock in order to plant Dendrocalamus in large-scale in Thanh Hoa province according to the Government’s policy.Common planting stock such as rhizomes and stem base are not enough, so that other parts of the aerial stem such as stem cuttings and branch cuttings must be used.
As in other bamboo species, these types of planting stock give new shoots, branches and leaves before developing roots. In adverse conditions, roots can not develop, therefore survival will be very low.
METHOD AND RESEARCH CONTENTS
The problem is whether growth stimulators can promote early rooting of branch cuttings. Branches are found in large quantities and can be used for propagation, however, so far people have not used them.
Experiments were done in the nursery of the Dendrocalamus research Station, Luong Ngoc district, Thanh Hoa province, with 3 growth stimulators namely 2,4,5-T, 2,4-D and NAA. The branches selected had a diameter of equal or more than 1.5cm and a length of 3-4 nodes from branch base (about 40cm). Branch cuttings were put in solutions of growth stimulators then inoculated in moist sawdust. After rooting, branches were kept in the nursery. Their treatments were arranged randomly and in Latin square plots and repeated in two years, 1976 and 1977 to investigate the effect of growth stimulators on rooting, the effect of treating time, age of cuttings and season on rooting and to find measures to increase the survival of rooted branches.
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
- study on thinning techniques of manglietia glauca plantations in order to increase increment (1971 - 1976)
- increment rules of manglietia glauca planted stands for forest management work (1974-1977)
- preliminary study on some technical measures for intensive cultivation of e.exserta plantations in midland area at dailai, vinhphu (1971 - 1975)
- investigation of soils for planting e.exserta and e. tereticornis, and influence of e.exserta mono-species plantations on soil fertility in bare hill areas (1972 - 1974)
- some research results on measures to control termites in eucalyptus plantation (1973 - 1975)
