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Results of building of Castanopsis boisii nursery garden in Bac Giang after 6 years of implementation.

Monday - 06/11/2017 23:14
To implement the project: "Development of economic value  of speciality forest trees  in the period of 2011-2015", Institute for Forest Ecology and Environment coordinated with Son Dong Protection Forest Management Board to select dominant trees, cloning by transplant method, to build clonal seed orchards to supply scion wood, engraft for seedling market of Province and neighbouring provinces. After 6 years of implementation, Castanopsis boisii in Bac Giang have been selected for the dominant trees, multiplication and development of clonal gardens.

Castanopsis boisii is an endemic species of Vietnam, not only of high economic value, meet part of the source of timber for construction, home appliances etc., that seeds are also popular food with highly nutritious, have a medicinal effect. Castanopsis boisii distributes in some areas widely, mainly in North area, such as Bac Giang province, Quang Ninh province etc.  With the advantageous conditions, extensive propagation of Castanopsis boisiiis a good way to develop the household economy, improve income for people in the area.

Bac Giang province is one of Castanopsis boisiiareas which have the largest area. Castanopsis boisii has been significant income crop for the people. Besides, local people have long experience in propagation and planting, which is a great advantage to develop Castanopsis boisii.

Project implementation: "Development of economic value  of speciality forest trees  in the period of 2011-2015", Institute for Forest Ecology and Environment has coordinated with Son Dong Protection Forest Management Board to select dominant trees, cloning by transplant method, to build clonal seed orchards to supply scion wood, engraft for seedling market of Province and Neighbouring provinces. After 6 years of implementation, the results collected of Castanopsis boisii in Bac Giang are summarized as follows:

1. Result of dominant tree collection

The results of the survey in Bac Giang province show that Bac Giang is a distribution center of Castanopsis boisii. This species occurs in most of the mountainous districts of the province. The concentrated distribution areas include Luc Nam (Truong Son, Vo Tranh, Binh Son, Nghia Phuong, Luc Son, Huyen Son), Luc Ngan (Tan Lap, Nam Duong), districts Tan Yen (Tan Trung, Nha Nam, An Duong, Phuc Hoa, Lien Xuong), Yen The (Tan Tien, Tam Hiep communes). The distribution areas are less concentrated, including Luc Nam (Cuong Son, Truong Giang, Dong Hung, Dong Phu, Tam Di, Ba Son communes), Luc Ngan district (My An commune), Son Dong district (Thanh communes) Son, Thanh Luan, Tuan Dao), Yen The (Tien Thang, Tam Hiep and Phung Xuong communes). The scattered area consists of the remaining mountain communes of Son Dong, Luc Nam and Yen The.

The results also showed that in Luc Nam district, the quality of chestnuts also ensured the requirement for the selection of the dominant trees, in which 9 stands were selected (7 stands in Luc Son commune and 2 stands in Truong Son Commune) qualify for the dominant tree. Results of selection of dominant trees according to branch standard No. 147-2006 (issued in accordance with Decision No. 4108/QD-BNN-KHCN dated 29/12/2006 of Ministry of Agriculture and Rural Development), selected 40 dominant trees  (12 dominant trees in Luc Son commune and 28 dominant trees in Truong Son commune) according to Decision No. 626 / QD-SNN dated 06/11/2013 by the Director of Bac Giang Provincial Department of Agriculture and Rural Development. (Source code from SM.04.13 to SM.04.52).

  

  

Figure 01: Castanopsis boisii in Luc Son commune and Truong Son commune

2. Multiplication result

Inheriting many kinds of research on multiplication of Castanopsis boisiiby the grafting method, the project has propagated the tree by grafting method. Inside:

  • Graft origin: Castanopsis boisiiis nursed in nutrient bulb size (15cm x 20cm), reaching from 18 months; healthy, not pestilent, diameter from 0.6 to 1.0cm. The total of 8,000 seedlings was planted at the Institute for Forest Ecology and Forest Nursery in 40 blocks, 50 cm apart and 200 trees in each.
  • Graft material (scion): got from 40 dominant trees admitted in Luc Son and Truong Son communes, Luc Nam district. Grafts are collected from the middle layer of canopy upside, in the East and Southeast, the crafts are not too old or too young, the diameter of scions is from 0.6 to 1.0 cm, no insects and hidden in the canopy. The mother plants are numbered according to the source code, the scions of each tree are separated, after obtaining moisture preservation (cut leaves, covered with damp cloth, to enter the foam box). Scion has the floating surface but not bud.

After 12 months, the project has collected 4,000 standard grafted seedlings, in which, on average, 100 grafted seedlings per line (original certificate No. 299/2015/NGLG - 338/2015 / NGLG)

  

  

Figure 02: Multiplication result of Castanopsis boisiiby scraft method at the Institute for Forest Ecology and Forest Nursery 

3. Results of clonal seed orchard construction

The project coordinated with the Son Dong Protection Forest Management Board selected the location of the clonal seed orchard, planted the clonal seed orchard in accordance with the approved design.

Results after 1 year of planting, the seedlings in the garden have grown and developed well, the grafted eyes have grown steadily. So, the initial results of the project showed that Castanopsis boisiigrow well and are suitable for the natural conditions of the selection area for the establishment of seed orchards.
 

 
 
 

Figure 03: Nursery garden in An Lac Commune, Son Dong District, Bac Giang province after 2 years

Author: Nguyen Thi Mai Duong

Source: The Institute for Forest Ecology and Environment

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Implementing projects in 2017
List of implementing projects in 2017:
 
1. Supporting Di Linh Forestry and Bao Lam Forestry Company Limited (SFFC) to meet international standards for SFM in accordance with the Forest Stewardship Council (FSC) funded by FAOVN

2. Review, adjust the Plan for forest protection, restoration and sustainable development of the Central Highlands up to 2025 with orientation to 2030 funded by VNFOREST

3. Co-operation between UNEP and IFEE in undertaking the work contributing to the development of a knowledge package on the use of spatial analysis supporting REDD+ planning at the sub-national level
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