• Landscaping Tree
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• s.127
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• pp.32-36
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• 2012

수목에 있어서 해충방제란 인간에게 경제적 손실을 초래하고 해충의 활동을 억제하는 것으로서, 수목 해충의 밀도 개체수를 일정한 수준 이하로 조절하는 것을 의미한다. 즉 유해한 생물이 존재하더라도 그 밀도가 인간에게 심각한 피해를 줄 정도가 아니면 굳이 시간과 경비를 투자하여 방제 작업을 수행할 필요가 없다. 어떤 해충의 밀도가 점점 높아져서 이들에 의한 피해를 방치 하였을 때 예상되는 손실액이 방제에 소요될 제반 비용보다 높을 경우에는 방제 수단을 적용해야 할 것이며, 이러한 해충에 의한 손실액과 방제비용이 같을 때의 해충밀도를 경제적 피해수준이라고 한다. 따라서 경제적 피해수준을 경계로 하여 방제를 할 것인가 말 것인가를 결정하게 되며 조경수의 경우에는 경관미적 가치도 이러한 경제적 피해수준에 반영되어야 한다고 생각된다. 해충의 방제법을 대별하여 보면 기계적 방제법, 물리적 방제법, 화학적 방제법, 생물학적 방제법, 임업적 방제법, 페로몬과 기타 생리활성물질을 이용한 방제법, 법적 방제법으로 분류할 수 있다. 그러나 최근의 수목해충 방제는 화학적 방제 일변도의 방제가 이루어지고 있기 때문에 환경오염 등 생태환경에 영향을 주고 있는 상황에 있다. 이러한 관점에서 본다면 수목해충 방제는 여러 가지의 방제법을 적지 적소에 활용할 수 있는 종합적인 방제방법이 필요한 시점이라고 할 수 있다. 특히 화학적 방제를 할 시의 주의점 등 각각의 방제법에 대하여는 추후 살펴보도록 하겠으며, 본 지면에서는 직접적 방제법인 기계적 방제법과 물리적인 방제법에 대하여 소개하도록 하겠다.

• Proceedings of the Plant Resources Society of Korea Conference
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• 1996.09a
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• pp.54-55
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• 1996

• Korean Journal of Weed Science
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• v.31 no.1
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• pp.8-23
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• 2011

Weeds are one of the major constraints to crop production in organic farming systems. This paper reviews major results and techniques achieved with physical, cultural, and biological weed control and their perspectives in organic agriculture. Physical methods includes mechanical, thermal, lighting, electrocution, pneumatic, autonomous robot weeding control techniques. Cultural weed control methods includes mulching, tillage, crop rotation, cover crops and crop competition. Physical and cultural weed control techniques are especially important in organic farming crops where other weed control options are limited or not available without use of herbicides. Biological weed control includes mycoherbicides, innundative biological control, broad-spectrum biological control and allelopathy. Successful weed management in organic farming requires well managed integrated systems of mechanical control using newly developed machines, cultural control and biological control methods. Weed management decision-aid models may also needed to develop to provide greater assurance of achieving profitability and appropriate long-term weed management in organic farming in the future.

• Food Industry
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• s.108
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• pp.45-58
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• 1991

• KOREAN POULTRY JOURNAL
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• v.55 no.3
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• pp.173-173
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• 2023

• Journal of Mushroom
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• v.21 no.4
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• pp.266-269
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• 2023

This study aimed to address the increasing demand for technologies preventing mushroom fly damage. By monitoring the annual occurrence patterns of pests over several years and accumulating data, we conducted an analysis to evaluate the efficacy of preventive measures applied before the surge in mushroom fly infestation, typically observed in May. For preemptive control, physical measures involved installing air curtains at cultivation facility entrances and placing sticky traps and insect traps around entry points to block external entry and reduce internal insect density. Additionally, we applied an organic agricultural material, Dalmatian chrysanthemum extract, weekly alongside chemical control measures. To assess the reduction in mushroom fly populations, yellow sticky traps (15×25 cm) were placed at three locations within the mushroom cultivation facility, and the occurrence patterns before and after implementing preventive measures were compared. Compared to conventional practices, the application of preventive techniques resulted in a significant reduction, with a 60% decrease from 15 levels of mushroom flies/m² to 6 levels of mushroom flies/m² in May and a 40% decrease from 10 levels of mushroom flies/m² to 6 levels of mushroom flies/m² in June. While achieving over 50% efficacy during the peak mushroom fly season with preventive measures, we identified complementary actions such as blocking external sources (gaps in cultivation facility doors) and maintaining cleanliness around cultivation facilities (proper disposal of spent substrate) for further improvement. Comprehensive analysis and safety studies, including correlation analysis with contaminants and pathogens, are recommended to ensure the widespread adoption of mushroom fly preventive techniques for safe and stable mushroom production in the agricultural sector.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1996.06a
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• pp.130-136
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• 1996

• Journal of The Korean Radiological Technologist Association
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• v.29 no.1
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• pp.287-288
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• 2003

• Research in Plant Disease
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• v.7 no.1
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• pp.42-48
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• 2001

The effect of cultural, physical and chemical control methods on the population density of Meloidogyne arenaria second-stage juveniles (J2) and on fruit yields of oriental melon was investigated at Seongju Fruit Vegetable Experiments Station, Kyungpook province, Korea, for two years from 1999 to 2000. Crops used in a rotation prior to Oriental melon were rice, corn, sesame, and green onion. The physical methods used were either solarization, soil addition or soil drying, and a nematicide, fosthiazate of granular formula, was used as the chemical method, applying at a rate of 300g a. i./10 a. Growing rice in the rotation, solarization, and soil addition controlled the nematode disease most effectively, reducing the number of J2 by 90% and increasing fruit yields two times. However, the effects of these control methods on the J2 population were limited to the early growing season; the J2 population increased later, suggesting that additional control practices may be needed in the following season. The next effective control methods were use of corn in the rotation, the nematicide application, and soil drying. The nematicide application was effective only for the early fruit yield, but neither for the late nor for the total yields. Use of sesame or green onion in the rotation was not effective in controlling the nematode.

• Journal of the Korean Society for Marine Environment & Energy
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• v.6 no.2
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• pp.3-15
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• 2003

Recently more than 450 incidents of oil spill a year have occurred in nearshore of Korea, which caused unmeasurelable losses in fisheries and severe damage in marine ecosystem. Two approaches remain paramount in any response to marine oil spill : the enhancement of natural dispersion of the oil by using dispersants, and mechanical recovery using booms and skimmers. A technique currently receiving fresh attention is the enhancement of the natural bioremediation of oil through the application of micro-organisms and/or nutrient. Oil, like many natural substances, will biodegrade over a period of time into simple compounds such as carbon dioxide, water and biomass. Bioremediation is the term used to describe a range of processes which can be used to accelerate natural biodegradation. More specifically biostimulation is the application of nutrients, and bioaugremetation or seeding is the addition of microbes specially selected to degrade oil. Bioremediation is an economically attractive method for the clean-up of oil-contaminated area. Bioremediation has been demonstrated to be an effective oil spill countermeasure for use in cobble, sand beach, salt marsh, and mud flat environment.