• Weed & Turfgrass Science
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• v.2 no.3
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• pp.221-229
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• 2013

This paper reviews current status of weed control practices in herbicide-resistant crops to examine weed management strategies in cope with cropping herbicide-resistant crops in the near future. Herbicide-resistant crops were rapidly adopted weed management technologies due to broad-spectrum weed control without crop injury. Transgenic glyphosate-resistant cultivars in soybean, corn, canola, and cotton were adopted to manage weeds at lower cost in a simplified weed management system. Dual stack crops with glyphosate and glufosinate resistance were developed to control glyphosate resistant weeds in corn, soybean and cotton. New multiple herbicide-resistant crops with resistance to glyphosate and glufosinate, acetolactate synthase (ALS) inhibitors, synthetic auxin herbicides, 4-hydroxyphenyl pyruvate dioxygenase (HPPD) inhibitors or acetyl Coenzyme A carboxylase (ACCase) inhibitors will expended the utility of existing herbicide technologies to manage the evolution of resistant weeds. However, herbicide resistant crops alone cannot solve weed problems and thus studies on diverse weed managements using an array of alternating herbicides of mode of action, mechanical, and cultural practices are needed for integrated weed management systems in the future.

• Agrochemical news magazine
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• v.23 no.7 s.180
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• pp.6-9
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• 2002

• Weed & Turfgrass Science
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• v.3 no.1
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• pp.1-5
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• 2014

This paper reviews current status of weed science in Asian-Pacific regional agricultural systems based on the 24th Asian-Pacific Weed Science Society Conference. About 190 researchers from 16 countries including Korea participated in the Conference and presented 160 papers in 11 research areas. Major research topics were invasive weeds and their ecology, allelopathy, weed management in paddy field, weed management in field crops, and herbicide resistance. Because rice is a major food crop in Asian countries, weed control and herbicide resistance management in paddy field were a main object of research. Weed control in maize, soybean and wheat has also been studied continuously. To prevent the increase of problematic weeds and to overcome food crisis, the importance of weed-related researches has been raised. Therefore it is expected that various weed management systems and control of herbicide resistant weeds should be studied continuously in the future.

• Life and Agrochemicals
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• s.265
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• pp.30-33
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• 2011

• 농업기술회보
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• v.52 no.4
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• pp.16-17
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• 2015

농사는 잡초와의 싸움이라고 하였다. 벼농사에서 파종, 육묘, 이앙 등의 재배과정은 기계화로 인해 투입 시간이 매년 절감되고 있으나 잡초 방제 투입 시간은 증가하고 있을 뿐만 아니라 제초제 사용 횟수도 증가하고 있다. 이러한 원인의 가장 큰 이유는 논에서 제초제 저항성 잡초들이 전국적으로 빠르게 확산하고 있기 때문이다. 제초제 저항성 잡초의 발생 원인과 잡초 제거 방법에 대해 알아본다.

• The Korean Journal of Pesticide Science
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• v.12 no.1
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• pp.1-8
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• 2008

The widespread and diverse sulfonylurea (SU) resistance problem has found in Korea, where one-shot-treatment herbicides such as pylazosulfuron/molinate and bensulfuron/molinate have been used continuously since 1989. The SU-resistant weeds of 7 annual weeds and 3 perennial weeds as of 2008 have confirmed in paddy fields in Korea. An effective management to SU-resistant weeds requires an integrated approach toward the weed control system, in particular, as to the drastic changes of herbicides development. Recent trend of new paddy herbicides in Japan has been developing to maximize the management of SU-resistant weeds. In the future, it is expected that the development of paddy herbicides in Korea is likely to be shifted toward the new "one-shot-treatment" included with herbicides of over 3-ways to maximize the control of resistant weeds. Bromobutide and carfentrazone are effective against sedges and broad-leaved weeds, respectively, and benzobicyclone and pyrimisulfam are effective against sedges and broad-leaved weeds.

• Weed & Turfgrass Science
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• v.5 no.3
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• pp.105-110
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• 2016

This paper provides the current status of weed science and prospects for the development of weed science based on the research trends presented at the 7th International Weed Science Conference in 2016. Approximately 520 researchers from 59 countries, including Korea, participated in the conference and presented 625 papers in nine research areas. Major research topics were herbicide resistance, weed ecology, weed management in agricultural and non-agricultural lands, herbicide spray technology, and non-chemical weed control. Studies on herbicide resistance presented more than 30% of all papers presented. Particularly, resistance to non-selective herbicides, such as glyphosate and glufosinate-ammonium, and non-target sites of resistance mechanisms were the main subjects of the herbicide resistance research area. Moreover, the conference focused on research concerning herbicide resistant weeds of staple crops of the world (corn, wheat, and rice). Arylex was introduced as a new compound which has a mode of herbicidal action similar to synthetic auxin. Three compounds being developed as HPPD inhibitors were studied for ways to reduce their toxicity and tested as mixed with safeners. Additionally, parasitic weeds, which are not native to Korea, are an expanding research subject in the world. Although 45 years have passed since the first report of herbicide resistance in 1970, herbicide resistance remains a serious problem in most intensive cropping systems of the world and will continue to be a major area of study in the future.

• Life and Agrochemicals
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• s.266
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• pp.34-37
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• 2011

• Weed & Turfgrass Science
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• v.2 no.3
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• pp.248-253
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• 2013

This study was conducted to select alternative herbicides to control herbicide-resistant and - troublesome weeds in rice fields, Korea. The resistant Echinochloa oryzicola to ACCase inhibitor was tested by herbicides registered to control Echinochloa oryzicola. And the resistant and troublesome weeds to sulfonylurea (SU) herbicides, ALS inhibitors, were tested by widely using herbicides to control the resistant weeds in Korea. The oxadiazon, pyrazolate, pretilachlor and benzobicyclone+thiobencarb effectively controlled resistant Echinochloa oryzicola to ACCase and ALS inhibitors at 0.5 leaf stage of the, Herbicides containing mefenacet or fentrazamide controlled effectively by the 2 leaf stage. In controlling other SU resistant weeds including Sagittaria trifolia and Ludwigia prostrate, benzobicyclon and mesotrione performed well all tested weeds, and carfentrazone and pytazolate were effective to broadleaf weeds. Sagittaria trifolia and Ludwigia prostrate, which were suspected to be resistance to SU herbicides, were well controlled by carfentrazone and pytazolate.

• Life and Agrochemicals
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• s.272
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• pp.34-37
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• 2011