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Balclutha punctata 에 의한 뽕나무 오갈병 파이토플라스마의 전반
한상섭 ( Sangsub Han ) 한국산림과학회 2012 한국산림과학회지 Vol.101 No.4
The present study was initiated to find out the insect vector of mulberry dwarf phytoplasma. Among the collected insects from mulberry cultivation region the sucking insects (Hishimonas sellatus Bothrogonia japonica and Balelutha punctata) were selected for transmission of mulberry dwarf phytoplasma. Sucking insects H.sellatus and B. punctata successfully transmitted phytoplasma to healthy seedling mulberry and periwinkle plants by inoculation-feeding. Typical dwarf symptom was observed in mulberry tree but very slender twigs on stem and formatted small leaves were found on periwinkle plants which are typical witches` broom symptoms. The phytoplasmas were detected in all samples exception sucking insects B. japonica using phytoplasma universal primer pair R16F2n/R2.
장동헌 ( Dongheon Jang ),이상현 ( Sanghyun Lee ),한상섭 ( Sangsub Han ) 한국협동조합학회 2010 韓國協同組合硏究 Vol.28 No.1
In this study, we examined the development plans of producer organization on the basis of the investigation on producers`` awareness and distribution status of rhododendron farms. The key contents and suggestions are as follows. First, the technical standard of producers was of a high level and the difficulty experienced by producers was market and price instability. In addition, soil management was limited to fertilization and control of insect pests. Also, there was insufficiency of discussions on farming plans among producers. Therefore, it is necessary to establish composite farming plans as well as to pursue joint purchasing of farming materials, scientific soil management and introduction of programs toactivate the organization. Second, rhododendron distribution mainly took place as trading at farming yards and the price was determined largely by merchants. For marketing, there was lack of distribution information and insufficient securing of trading partners. Therefore, it is necessary to improve price negotiation power, to establish a landscaping plant distribution center and to promote the 6th industrialization, etc. Third, in the long-term perspective, it will be necessary to establish the basis for R&D and implementation of hub for rhododendron industry.
Tae Ueon Lim(임태헌),Yong-Hwa Choi(최용화),Dong Woon Lee(이동운),Sangsub Han(한상섭),Byeongjin Cha(차병진) 한국농약과학회 2008 농약과학회지 Vol.12 No.3
The Streptomyces padanus isolate TH04, isolated from mummified peaches, showed strong antifungal activity to Monilinia fructicola. The inhibition activity of the isolate TH04 to mycelial growth and spore germination at 1% concentration of sub-antifungal powder made from culture suspension (CS) was ranged from 79.8% to 81.0% and from 73.9% to 75.8% to M. fructicola four strains, respectively. In the test of antifungal activity in mixed culture of the isolate and M. fructicola, inhibition rate was 7.5%, 86.8% and 94.0% in 0.01, 0.1, and 1% concentration of CS containing bacterial cell of the isolate, respectively. On apples (cultivar; Fuji), the control values of the isolate TH04 crude filtrates (0.1 and 1%) were 85.9% and 100%, respectively. The results suggest that the isolate TH04 indicate development possibility as biocontrol agent of brown rot caused by M. fructicola with the study on delivery method and fermentation condition to produce an antifungal compound.