• Journal of the Korean Society of Tobacco Science
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• v.16 no.1
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• pp.84-89
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• 1994

Potato virus Y (PVY) is an important viral disease in burley tobacco in Korea and is mostly transmitted by green peach aphid, Myzus penicae, in nature. Effects of barrier nets on the immigration of the aphid population into tobacco fields and on the control of PVY were investigated in 3 tobacco fields with 1.8 m - height polyethylene (PE) nets on their outer - sides in Iseo - Myeon, Wanju - Kun, Cheonbuk. Immigration of aphids to the tobacco yields started at late April and reached maximum at early June. The immigrating aphid population was apparently blocked by the barrier nets to be reduced by 54-73%. PVY severity was also reduced by the barrier nets. However, the control value was variable, ranging 24-67%, which suggests that effect of the PE net barrier on the prevention of aphid-borne virus might be variable depending on the location and slope of the fields.

• Journal of Preventive Medicine and Public Health
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• v.49 no.1
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• pp.23-34
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• 2016

South Korea's state health insurer, the National Health Insurance Service (NHIS), is in the process of a compensation suit against tobacco industry. The tobacco companies have habitually endeavored to ensure favorable outcomes in litigation by misusing scientific evidence or recruiting scientists to support its interests. This study analyzed strategies that tobacco companies have used during the NHIS litigation, which has been receiving world-wide attention. To understand the litigation strategies of tobacco companies, the present study reviewed the existing literature and carried out content analysis of petitions, preparatory documents, and supporting evidence submitted to the court by the NHIS and the tobacco companies during the suit. Tobacco companies misrepresented the World Health Organization (WHO) report's argument and misused scientific evidence, and removed the word "deadly" from the title of the citation. Tobacco companies submitted the research results of scientists who had worked as a consultant for the tobacco industry as evidence. Such litigation strategies employed by the tobacco companies internationally were applied similarly in Korean lawsuits. Results of tobacco litigation have a huge influence on tobacco control policies. For desirable outcomes of the suits, healthcare professionals need to pay a great deal of attention to the enormous volume of written opinions and supporting evidence that tobacco companies submit. They also need to face the fact that the companies engage in recruitment of scientists. Healthcare professionals should refuse to partner with tobacco industry, as recommended by Article 5.3 of the WHO Framework Convention on Tobacco Control.

• Journal of the Korean Society of Tobacco Science
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• v.10 no.1
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• pp.37-47
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• 1988

Endonuclease inhibitor was isolated from the chloroplast of the leaves of tobacco, Burley 21 and NC 83, The inhibitory effect on the activities of endonucleases including BamH1 was lost by the addition of trypsin or heat treatment However, the treatment of $\alpha$-amylase was unconcerned in the inhibitory effect The endonuclease inhibitor was found to be a monomeric protein that plays a vital role for protection of tobacco chloroplast DNA from endonuclease action.

• Journal of the Korean Society of Tobacco Science
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• v.5 no.1
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• pp.43-47
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• 1983

Tobacco mosaic virus (TMV) was detected from Kimchi by biological and serological assay 5. Kimchi samples three month after cooked were collected, and were inoculated on N. tabacum var. Burley 21 and NC 95. Out of 33 samples, 6 showed typical symptoms induced by TMV, local necrotic lesions on Burley 21 and mosaic on NC 95. All saps from tobacco leaves showed the mosaic symptom reacted positively against TMV antiserum by agar gel double diffusion test. Based on the results, the Kimchi is considered as one of the important inoculum sources in Korea.

• Journal of the Korean Society of Tobacco Science
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• v.3 no.2
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• pp.89-93
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• 1981

Some or the parameters affecting the thermal analysis of different types of ground tobacco have been discussed. The sample, Korean flue- cured and burley and Greek orient tobacco leaves were run in air at heating rate of $10^{\circ}$ and 20^{\circ}C$ per minute. The thermograms obtained were divided into four temperature zones. The effect of different heating rates on thermal degradation has been discussed At the lower heating rate the maxima of DTA curves in zone 3 and 4 were 25-$40^{\circ}C$ lower than that of the higher heating rate.

• Journal of the Korean Society of Tobacco Science
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• v.3 no.2
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• pp.131-133
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• 1981

The hollow stalk, caused by Erwinia carotovors var. carotovora, is probaly the most devastating disease to burley tobacco in Korea. There are two modes of infection to tobacco plants: the primary infection along the plant stem from soil and the secondary one from the topped end of plants. The secondary infection rate could be reduced to almost zero by applying an antibiotic, streptomycin sulfate(400 ppm solution), right after topping.

• Journal of the Korean Society of Tobacco Science
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• v.24 no.1
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• pp.27-31
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• 2002

Three kinds of inoculation methods, capillary, root cutting and dipping were compared for an efficient way to screening the resistant tobacco variety against bacterial wilt, Ralstonia solanacearum. The pricking a capillary tube contained the pathogenic bacterial suspension(10$^{7}$ cfu/$m\ell$) to an axillary bud of each tobacco plant showed different resistance well between varieties. The less period was required in inoculating work and in disease development for the inoculation method used with capillary tube than for two other inoculation methods tested also.

• Proceedings of the Korean Society of Crop Science Conference
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• 1992.05a
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• pp.26-27
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• 1992

• Proceedings of the Ginseng society Conference
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• 1998.05a
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• pp.40-41
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• 1998

• Journal of the Korean Society of Tobacco Science
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• v.8 no.2
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• pp.43-49
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• 1986

Field experiment was conducted to investigate the effect of vinyl mulch on phosphate availability of soil and fertilizer in 1982. Growth of tobacco was more vigorous at each level of phosphate treatment in vinyl mulched than in bare soil. There was significant culture x Phosphorus treatment interaction for the yields of cured tobacco leaves. These results indicated that vinyl mulch was effective to improve phosphate availability of soil and fertilizer. Increase in soil temperature and maintenance of bulk density suitable for Phosphorus diffusion by vinyl mulch were likely to Play major roles on Phosphate availability, but other unknown factors appeared to be involved.