{"id":587,"date":"2010-08-19T03:55:32","date_gmt":"2010-08-19T03:55:32","guid":{"rendered":"http:\/\/envafs.dungnq.local\/2010\/08\/19\/vietnam-journal-of-forest-science-number-3-2009\/"},"modified":"2019-09-26T10:22:33","modified_gmt":"2019-09-26T03:22:33","slug":"vietnam-journal-of-forest-science-number-3-2009","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/vietnam-journal-of-forest-science-number-3-2009\/","title":{"rendered":"Vietnam Journal of Forest Science Number 3-2009"},"content":{"rendered":"<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">1. RESEARCH RESULTS FROM INTENSIVE PLANTING OF EUCALYPTUS AT THE NORTH-EASTERN VIETNAM FOREST SCIENCE AND PRODUCTION CENTRE<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Le Minh\u00a0 Cuong<\/span><\/strong><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">North Eastern Vietnam Forest Scientific and Production Center<\/span><\/em><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">Forest Science Institute of Vietnam<\/span><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">SUMMARY<\/span><\/strong><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">For plantation forests to attain high productivity and economic effectiveness, they require not only good varieties, but also appropriate intensive planting methods. Models of intensive planting of clones U<sub>6 <\/sub>and PN<sub>2<\/sub> were established at the North-eastern Vietnam Forest Science and Production Centre in 2000, which included three site preparation treatments, and five fertilizer treatments. After 8 years, the results show that the plantation productivity of mechanical site preparation is 122.6-144.2% higher than that of site preparation by hand, and the annual growth rate is 22-24m<sup>3<\/sup>\/ha\/year. The cost for mechanical site preparation is more expensive (4,206,000 VND) than site preparation by hand, but the interest on this at the end of the rotation is 8,264,000 VND, higher than that of site preparation by hand. The combination of mechanical site preparation and fertilizing greatly increases the productivity of planting. The treatment of mechanical site preparation (ripping 50 cm in depth, spacing of lines is 2 m, digging holes of 30 x 30 x 30 cm a long the line), and fertilizing with 200 g of NPK, and 1 kg of muck is the best: the annual growth rate is 28-30 m<sup>3<\/sup>\/ha\/year, and the volume of the plantation at the end of the cycle is 220-235 m<sup>3<\/sup>\/ha. The economic productivity is also highest, as the interest could reach 25,000,000 VND after a rotation of 8 years.\u00a0<\/span><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Keywords:<\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\"> Eucalyptus clone U<sub>6 <\/sub>and PN<sub>2<\/sub>, Intensive planting, Site preparation, Fertilizing<\/span><span style=\"font-family: Times New Roman; font-size: medium;\">\u00a0<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">2. RESEARCH ON THE GROWTH OF THREE YEAR OLD TRIALS OF EUCALYPTUS SPECIES <em>E. CAMALDULENSIS, E. PELLITA<\/em>, AND ACACIA SPECIES <em>A. CRASSICARPA, A. AULACOCARPA<\/em> IN EXPERIMENTATION STATION, GIA LAI PROVINCE<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Nguyen Danh<\/span><\/strong><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">Resource and Environment Department, Gia Lai province<\/span><\/em><strong><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">SUMMARY<\/span><\/strong><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">Eucalyptus and Acacia are two exotic and fast growing species. Among them <em>E. camaldulensis, E. pellita, A. crassicarpa<\/em> and <em>A. aulacocarpa<\/em> are planted in large areas. In order to supply pulp wood and for protecting soil fertility mixed forests of these species are necessary. Mixed forests of Acacia and Eucalyptus are suitable to plans on in poor forest lands after shifting cultivation.\u00a0<\/span><strong><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Keywords:<\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\"> Eucalyptus, Acacia, mixed forest planting.\u00a0 <\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">3. RESEARCH ON FOREST VEGETATION COVER CHANGES IN BACH MA NATIONAL PARK<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Dang Ngoc Quoc Hung <\/span><\/strong><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">Bach Ma National Park, Thua Thien-Hue<\/span><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">SUMMARY<\/span><\/strong><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">Forest<\/span><span style=\"font-family: Arial; font-size: 10pt;\"> vegetation cover plays an important role in regulating water resources, flood reduction, drought and erosion control. In addition, it plays an important role in special-use forest through conservation of ecological standard forms, and rare and valuable fauna and flora. Changes in forest vegetation cover can be one reason for the loss of these values through either human or natural impacts. Geographic Information System (GIS) and Remote Sensing technology was applied to monitor and evaluate changes to forest vegetation cover in the new extended area of Bach Ma National Park at Nam Dong district, Thua Thien Hue province in 1989, 2001, 2004 and 2007. Use of this technology helped the Bach Ma National Park Management Board to gain information on vegetation changes in the new extended area and will form a key contribution to developing a solution to conserving this area of forest.<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Keywords<\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\">: Forest vegetation cover, Bach Ma<\/span><strong><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">4. TESTING SURVEY METHODS FOR REGENERATION OF NATURAL FOREST<\/span><\/strong><strong><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Do Thi Ngoc Le<\/span><\/strong><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">Vietnam<\/span><\/em><em><span style=\"font-family: Arial; font-size: 10pt;\"> Forestry University<\/span><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">SUMMARY<\/span><\/strong><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">This paper represents the results of testing several methods to survey regeneration of natural forest based on data analysis of six samples with six different survey methods. The research results show that the regeneration survey methods produced different data about the species composition of regeneration as well as seedling density, origin, quality, and distribution. We determined two methods (method with 5 sub-sample plots (25m<sup>2<\/sup> per plot) and range method) based on error between the regeneration parameters<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Keywords<\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\">:\u00a0 Natural forest, Regeneration survey methods, Regeneration.<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">5. PRELIMINARY RESULTS OF INVESTIGATION INTO MEDICINAL PLANTS USED BY THAI MINORITY AT THACH GIAM COMMUNE, TUONG DUONG DICTRICT, NGHE AN PROVINCE<\/span><\/strong><strong><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Lu Thi Ngan,\u00a0 Nguyen Nghia Thin\u00a0\u00a0 <\/span><\/strong><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">Faculty of Biology, College of Science, Vietnam National University, Hanoi, Vietnam<\/span><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">SUMMARY<\/span><\/strong><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">In this paper, traditional plants used by Thai minority people at the Thach Giam commune, Tuong Duong district, Nghe An Province were investigated, collected, identified and listed. It was found that 231 species, 192 genera, and 88 families of 4 divisions of the higher plants were used. Of these, species of the Angiosperms are dominant representing 93<\/span><span style=\"font-family: Arial; font-size: 10pt;\">.16% of the total, followed by Polypodiophyta with 4.54%, Lycopodiophyta at 1.14%, and the Equisetophyta at 1.14%. <\/span><span style=\"font-family: Arial; font-size: 10pt;\">The life-forms of these species are diverse including herbs -31.16%, trees &#8211; 27.7%,\u00a0 shrubs &#8211; 23.8%, and lianas &#8211; 17.31%. They live mainly in mountain forests &#8211; 46.75%, and gardens &#8211; 42.86%. <\/span><span style=\"font-family: Arial; font-size: 10pt;\">The inventory found that 15 groups of diseases were cured by the local people, of which four groups used the largest number of species: digestion, skin, fever and lung diseases. Parts of plant species used by the Thai people vary: one part of plant used occupies 36.39% of total species, two parts used &#8211; 29.79%, and three parts used 21.55%. Of these parts, leaves are the most common part used: 53.25%, then roots: 43.72% and stems: 32.03%. Thirty nine remedies used for curing 15 groups of diseases are also investigated and listed.<\/span><strong><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/strong><strong><span style=\"font-family: Arial; font-size: 10pt;\">Keywords<\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\">: Thai minority, Medicinal plants, Diseases, Thach Giam, Tuong Duong, Nghe An.<\/span><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/p>\n<p align=\"justify\"><strong><em><span style=\"font-family: Arial; font-size: 10pt;\">6. MICHELIA VELUTINAM CANDOLLE (MAGNOLIACEAE)<\/span><\/em><\/strong><strong><span style=\"font-family: Arial; font-size: 10pt;\">,<\/span><\/strong><strong><span style=\"font-family: Arial; font-size: 10pt;\"> A NEW RECORD FOR FLORA OF VIETNAM<\/span><\/strong><strong><span style=\"font-family: Arial; color: #333333; font-size: 10pt;\">Vu Quang Nam<sup>1,2,3<\/sup>, Xia Nianhe<sup>2<\/sup><\/span><\/strong><em><span style=\"font-family: Arial; color: #333333; font-size: 10pt;\">\u00a0(1. Vietnam Forestry University, Hanoi, Vietnam<\/span><\/em><em><span style=\"font-family: Arial; color: #333333; font-size: 10pt;\">2. South China Botanical Garden, Chinese Academy of Sciences,\u00a0 Guangzhou 510650, China<\/span><\/em><em><span style=\"font-family: Arial; color: #333333; font-size: 10pt;\">3. Graduate University, Chinese Academy of Sciences, Beijing 100039, China)<\/span><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">SUMMARY<\/span><\/strong><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">Michelia velutina<\/span><\/em><span style=\"font-family: Arial; font-size: 10pt;\"> Candolle is <\/span><span style=\"font-family: Arial; font-size: 10pt;\">a <\/span><span style=\"font-family: Arial; font-size: 10pt;\">well-known species along the Himalayan countries of Bhutan, Northeast India, Nepal, China (Yunnan and Xizang), and Vietnam. This species has its natural distribution in the high mountains at 1500-2400 m altitude in mixed forests, with yearly flowering time of May-June and fruiting time of August-September. The specimens with collection numbers of TQ <\/span><span style=\"font-family: Arial; font-size: 10pt;\">2984 and Petelot 6.454 <\/span><span style=\"font-family: Arial; font-size: 10pt;\">were collected in Hoang Lien National Park (Sa Pa district, Lao Cai province of Vietnam) and deposited in the herbaria of the Hanoi Institute of Ecology and Biological Resources (HN) and the<\/span><span style=\"font-family: Arial; font-size: 10pt;\"> Ho Chi Minh Institute of Tropical Biology (VNM). Based mainly on morphological characteristics of leaves, flowers and fruits, together with a comparison with the types specimens of Wallich 6493 (K, holotype), <\/span><span style=\"font-family: Arial; font-size: 10pt;\">Rock 6919 (NY, isotype) <\/span><span style=\"font-family: Arial; font-size: 10pt;\">and authenticated specimens of <\/span><em><span style=\"font-family: Arial; font-size: 10pt;\">Michelia velutina<\/span><\/em><span style=\"font-family: Arial; font-size: 10pt;\"> of M.K. Li 0041, 0059; No-14538 <\/span><span style=\"font-family: Arial; font-size: 10pt;\">(IBSC),<\/span><span style=\"font-family: Arial; font-size: 10pt;\"> this species is confirmed as a new record of the genus <em>Michelia<\/em> for flora of Vietnam. It has some unique characteristics such as: leaf blade narrowly elliptic to elliptic; dense gray long tomentose beneath; young parts also have dense gray or yellowish long tomentose; gynoecium are ovoid-oblong to narrowly ovoid, longer than the androecium with dense pubescent gynophore. It is proposed that the Vietnamese name be &#8220;Gi\u00e6i Sapa&#8221; to indicate the locality where this species was first collected in Vietnam. Within this new record of <em>Michelia velutina<\/em> Candolle, the total number of the genus <em>Michelia<\/em> in Vietnam is raised to be about. twenty species.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0\u00a0<\/span><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0\u00a0<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Keywords<\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\">: Gioi Sapa, <em>Michelia velutina<\/em> DC.<\/span><span style=\"font-family: Arial; font-size: 10pt;\">, <em>Michelia<\/em>, New species, Vietnam<\/span><strong><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">7. ANALYSIS OF THE GENETIC DIVERSITY OF <em>MICHELIA BAILLONII<\/em> (PIERRE) FIN et GAGNEP. BY RAPD AND cpSSR MARKERS<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Nguyen Hoang Nghia<\/span><\/strong><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">Forest Science Institute of Vietnam<\/span><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Nguyen \u0110uc Thanh, Le Thi Bich Thuy<\/span><\/strong><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">Biotechnology Institute<\/span><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">SUMMARY<\/span><\/strong><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">Michelia baillonii<\/span><\/em><span style=\"font-family: Arial; font-size: 10pt;\"> (Pierre) Fin. et Gagnep. is a species of Magnoliaceae which has its natural distribution in south China, Laos, Myanmar and Vietnam. Some provenances of the species were introduced for trials and evaluation of genetic their diversity is necessary. Twenty-three (23) leaf samples collected from different provenances (three from China and one from Vietnam) of <em>Michelia baillonii<\/em> and three samples of <em>Michelia mediocris<\/em> were genetically analyzed by RAPD and cpSSR markers. Analysis has shown clear differences between provenances within <em>Michelia baillonii<\/em> and between the two <em>Michelia<\/em> species. Genetic similarity between provenances was only 30% and they divided into four groups with a difference of 45% in genetic relationship. Group No.1 includes samples from Puwen (I) and Jiangcheng (II) and these two provenances also divided into two separate subgroups. Group No.2 includes samples from Da Lat and Phu Tho provenances but they also divided into two separate subgroups. Group No.3 includes samples from Menghai provenance (III) while Group No.4 includes samples from Jinghong provenance (IV). The cpSSR maker used in molecular analysis did not give polymorphic DNA bands. This means that the genetic content in chloroplast DNA of <em>Michelia baillonii<\/em> is highly conservative. Therefore the introduction of provenances from China into trials and planting in Vietnam can increase the genetic diversity of the species.<\/span><strong><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Keywords<\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\">: <em>Michelia baillonii<\/em> (Pierre) Fin. et Gagnep., Genetic diversity, cpSSR, RAPD.<\/span><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">8. DETERMINE PLANTING REGION <em>A. MANGIUM x A. AURICULIFORMIS<\/em> WITH THE PURPOSE OF SUPPLYING BIG-SIZED TIMBER IN THE NORTH CENTRAL COAST OF VIETNAM<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><em><span style=\"font-family: Arial; font-size: 10pt;\">Nguyen Thanh Son<\/span><\/em><\/strong><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">Silvicultural Techniques Research Division<\/span><\/p>\n<p align=\"justify\"><strong><em><span style=\"font-family: Arial; font-size: 10pt;\">Dang Van Thuyet<\/span><\/em><\/strong><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">Scientific Planning Division<\/span><span style=\"font-family: Arial; font-size: 10pt;\">Forest Science Institute of Vietnam<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Summary<\/span><\/strong><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">The objective of this research is to identify the suitable planting region <em>A.mangium x A. auriculiformis <\/em>with the purpose of supplying big-sized timber in the North Central Coast of Vietnam. Groups of factors have been considered in order to determine the planting region for <em>A.mangium x A. auriculiformis<\/em> including the climate, soil and topography that is suitable with the ecological character of the species. In the entire North Central Coast of Vietnam, the most suitable planting area accounts for 1.070.391ha (20,8%) the less suitable planting area is 1.155.559ha (22.5%) and the worse suitable planting area is 2.907.367ha (56,6%).<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Key words<\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\">: Determining the planting region, <em>A.mangium x A. Auriculiformis<\/em>, the North Central Coast of Vietnam.<\/span><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">9. <\/span><\/strong><strong><span style=\"font-family: Arial; font-size: 10pt;\">INFLUENCE OF MOLYPDEN, GIBBERELLINE GA<sub>3 <\/sub>TO SEED GERMIATION AND NAA TO CUTTING ABILITY OF HOPEA ODORATA ROXB.<\/span><\/strong><em><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0 <\/span><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Bui Trung<\/span><\/strong><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">A Luoi High School, Thua Thien-Hue Province<\/span><sup><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0 <\/span><\/sup><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">SUMMARY<\/span><\/strong><em><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/em><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">Research on Hopea odorata Roxb. in A Luoi (Thua Thien &#8211; Hue province) showed that the germination rate after 45 days is 91,11% when seeds are pretreated using molypden salt at a concentration of 1000 =ppm for 5 hours, while the control have a rate of only 43,33%, and in other concentration and times the results vary from 41,11 &#8211; 78,89%. Seedling survival after 60 days at this concentration and length of treatment is also highest (90%). Highest germination of Hopea odorata Roxb. seed germination treated by GA<sub>3<\/sub> 40 ppm for 1 hour is only 70%, lower than when treated by molypden salt.\u00a0\u00a0\u00a0\u00a0<\/span><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">Rooting percentage of Hopea odorata Roxb. twigs of 1 year old seedlings treated by NAA 1000 ppm for 10 &#8211; 15 seconds is 91,11 &#8211; 94,44%. With this treatment root number and root length of cuttings are not worse than the control and treatment in other concentrations and times.\u00a0<\/span><em><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Keywords: <\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\">Hopea odorata, <em>Seed germination, Cutting propagation.<\/em><\/span><em><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">10. THE IDENTIFICATION OF DISSOLVING\u00a0 PHOSPHATE MICROORGANISMS AND DISEASE RESISTANT BACTERIA TO EUCALYPTUS AND PINUS BY MOLECULAR TECHNIQUE <\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Tran Thanh Trang<\/span><\/strong><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">Forest<\/span><\/em><em><span style=\"font-family: Arial; font-size: 10pt;\"> Protection Research Division<\/span><\/em><em><span style=\"font-family: Arial; font-size: 10pt;\">Forest Science Institute of Vietnam<\/span><\/em><em><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">SUMMARY<\/span><\/strong><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">Three dissolving phosphate microorganisms (PGL1.1, PGL1.4 and PGLrh3), one <em>Cryptosporiopsis eucalypti<\/em> disease resistant bacterial clone (BD7) to <em>Eucalyptus<\/em> and one <em>Fusarium oxysporium<\/em> disease resistant bacterial clone (NTXO2) to <em>Pinus<\/em> collected from different parts of Northern Vietnam were identified by molecular technique based on 16S ribosomal DNA.\u00a0 Clones PGL1.1 and PGL1.4 were identified as <em>Burkholderia cenocepacia<\/em>, and clones BD7 and NTXO2 were identified as <em>Bacillus subtilis<\/em> with the high confidences, up to 100% homogeneousness. Clone PGLrh3 was grouped with two species of <em>Burkholderia tropicalis <\/em>and<em> Burkholderia tropica<\/em> with the similar homogenous of 98.5%. This might be a new species belonging to genus <em>Burkholderia<\/em>. Clones BD7 and NTXO2, disease resistance to <em>Eucalyptus<\/em> and <em>Pinus<\/em> and clone PGLrh3 are useful in producing complex-bacteria biofertilizer applied to plants.\u00a0<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/strong><strong><span style=\"font-family: Arial; font-size: 10pt;\">Keywords:<\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\"> Phosphate dissolving microorganisms, Disease resistant bacteria, Molecular identification.\u00a0<\/span><strong><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">11. ISOLATING AND SCREENING HIGH ACTIVE DISSOLVING PHOSPHATE MICROORGANISMS AND STUDYING ITS BIOLOGICAL CHARACTERISTIC FOR PRODUCING BIOFERTILIZER FOR FOREST TREES<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Nguyen Thi Thuy Nga, Pham Quang Thu<\/span><\/strong><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">Forest<\/span><\/em><em><span style=\"font-family: Arial; font-size: 10pt;\"> Protection Research Division<\/span><\/em><em><span style=\"font-family: Arial; font-size: 10pt;\">Forest Science Institute of Vietnam<\/span><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">SUMMARY<\/span><\/strong><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">In forest production, phosphate fertilizer is usually applied to soil in order to improve the productivity of trees. However after a while the soluble phosphate fertilizer tends to become insoluble which leads to the difficulty of plants\u2019 absorbability. Using soil live-in bacteria which could dissolve insoluble phosphate into soluble phosphate is useful for the economy, ecology and environment. Thirty bacterial dissolving phosphate clones isolated from 30 forestry soil samples were collected in northern provinces of Vietnam, of which fifteen clones, accounting for 50 per cent of total isolated clones, have very high activity. Clones PGL<sub>RH3<\/sub>, P9.2, P1.4 and P1.1 have the highest diameters of dissolving phosphate zone (&gt;22cm). The results of quantative analysis also shows that clone PGL<sub>RH3<\/sub> has the highest ability of dissolving phosphate, up to 497.62ppmP, 12 fold of control clone, followed by clones P1.4 and P1.1 which transfer phosphate of more than 420ppmP. Clones P1.1, P1.4 and PGL<sub>RH3 <\/sub>were identified in which P1.1 and P1.4 are <em>Burkholderia cenocepacia<\/em> and PGL<sub>RH3<\/sub> is <em>Burkholderia tropicalis.<\/em>\u00a0 Clones P1.1, P1.4 and PGL<sub>RH3<\/sub> grow and develop very well in the medium containing potato extract and added mineral components. Clones P1.1 and P1.4 produce the highest effective bacteria population density after culturing for 4 days and shaking at 150 rpm. Similarly, clone PGL<sub>RH3 <\/sub>produces the highest population density after culturing for 5 days and shaking at 200 rpm. These three clones can be applied to produce complex-bacteria biofertilizer in order to stimulate the growth of forest trees.\u00a0<\/span><strong><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Keywords: <\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\">Isolating, Screening, High active dissolving phosphate microorganisms<\/span><span style=\"font-family: Arial; font-size: 10pt;\">.<\/span><strong><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">12. BUG DAMAGE YOUNG LEAVE OF <em>MICHELIA BAILLONII <\/em>(PIERRE) <\/span><\/strong><strong><span style=\"font-family: Arial; font-size: 10pt;\">FINET &amp; GAGNEPAIN IN HOANH BO, QUANG NINH<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Dao Ngoc Quang, Le Van Binh<\/span><\/strong><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">Forest Science Institute of Vietnam<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">SUMMARY<\/span><\/strong><\/p>\n<p align=\"justify\"><span style=\"font-family: Arial; font-size: 10pt;\">Bug attacks young leaf of one-year-old <em>Michelia baillonii<\/em> (Pierre) Finet and Gagnepain plantation in Hoanh Bo district, Quang Ninh province was identified as <span class=\"MsoPageNumber\"><em><span style=\"font-family: Arial;\">Anoplocnemis castanea<\/span><\/em><\/span><span class=\"MsoPageNumber\"><span style=\"font-family: Arial;\"> Dallas, it belonging to Coreidae family, Hemiptera order. This insect pest is described for the first time in Vietnam on <\/span><\/span><em>Michelia baillonii<\/em>. The adults are black colour and <\/span><span style=\"font-family: Arial; font-size: 10pt;\">vary considerably in size. The female is usually larger than the male varying from 29-32mm in length, 8-11mm in width and 27-30cm in length, 5-7mm in width, respectively. The antenna is string-shaped, having 4 sedments are in black colour except distal segment is in red colour. All four eyes (including 2 compound and 2 simple eyes) are in black. The femur in hindleg is very big comparing with fore and midle leg, the tarsus consist of three segments. <\/span><span class=\"MsoPageNumber\"><span style=\"font-family: Arial; font-size: 10pt;\">Damage severity of this insect pest on <\/span><\/span><em><span style=\"font-family: Arial; font-size: 10pt;\">Michelia baillonii<\/span><\/em><span class=\"MsoPageNumber\"><span style=\"font-family: Arial; font-size: 10pt;\"> in last year is very high and increasing from April to June. Both immature and mate stage are suck young leaf. The adults usually lay eggs on lower surface leaf. <\/span><\/span><span style=\"font-family: Arial; font-size: 10pt;\">Treatment of chemical insecticides results in laboratory showed that Ofatox 400EC (0.2%) and Diptecide 90WP (0.2%) were the best insecticide with 100% of mortality after 10h appplying.<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Keywords<\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\">: <span class=\"MsoPageNumber\"><em><span style=\"font-family: Arial;\">Anoplocnemis castanea<\/span><\/em><\/span>,<em> Michelia baillonii<\/em>, young leave.<\/span><strong><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><\/strong><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">13. INITIAL RESULTS OF RESEARCH ON <em>NEOHOUZEANA DULLOA<\/em> CULM PRESERVATION AS A RAW MATERIAL IN FINE<\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\"> <strong>HANDICRAFT COMMODITIES PRODUCTION <\/strong><\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Nguyen Van Duc, Le Bach Dang, Dinh Van Tien, Nguyen Thi Hang<\/span><\/strong><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">Forest Science Institute of\u00a0 Vietnam<\/span><\/em><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">SUMMAR<\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\">Y<\/span><\/p>\n<p align=\"justify\"><em><span style=\"font-family: Arial; font-size: 10pt;\">Neohouzeana dulloa<\/span><\/em><span style=\"font-family: Arial; font-size: 10pt;\"> culms have many uses. With <em>N. dulloa<\/em> culms as the raw material handicraft workers cleverly produce various fine handicraft commodities for both national consumption and export. Current treatment requires the culms to be submerged in water for 3-4 months causing environmental pollution in ponds and lakes. Initial research results of preservation of <em>N. dulloa<\/em> as a raw material guarantee the products quality, and reduce treatment time. Only 7-10 days are required to treat the culms, contributing to reduced environmental pollution in handicraft villages.<\/span><\/p>\n<p align=\"justify\"><strong><span style=\"font-family: Arial; font-size: 10pt;\">Keywords:<\/span><\/strong><span style=\"font-family: Arial; font-size: 10pt;\"> Preservation, Neohouzeana dulloa culms, Fine handicraft commodities, LN<sub>5<\/sub>,\u00a0 XM<sub>5<\/sub><\/span><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><span style=\"font-family: Arial; font-size: 10pt;\">\u00a0<\/span><span style=\"font-family: Times New Roman; font-size: medium;\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p align=\"justify\">\n&nbsp;\n<\/p>\n<p align=\"justify\">\n<span style=\"font-family: Arial;font-size: 10pt\">Forest<\/span><span style=\"font-family: Arial;font-size: 10pt\"> vegetation cover plays an important role in regulating water resources, flood reduction, drought and erosion control. In addition, it plays an important role in special-use forest through conservation of ecological standard forms, and rare and valuable fauna and flora. Changes in forest vegetation cover can be one reason for the loss of these values through either human or natural impacts. Geographic Information System (GIS) and Remote Sensing technology was applied to monitor and evaluate changes to forest vegetation cover in the new extended area of Bach Ma National Park at Nam Dong district, Thua Thien Hue province in 1989, 2001, 2004 and 2007. Use of this technology helped the Bach Ma National Park Management Board to gain information on vegetation changes in the new extended area and will form a key contribution to developing a solution to conserving this area of forest.<\/span><\/p>\n","protected":false},"author":17,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[17],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/587"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/comments?post=587"}],"version-history":[{"count":1,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/587\/revisions"}],"predecessor-version":[{"id":1663,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/587\/revisions\/1663"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}