• Title/Summary/Keyword: Weed Science

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Study on Weed Control Systems in Rice Production in Korea (한국(韓國) 논잡초(雜草) 방제체계(防除體系)에 관한 조사연구(調査硏究))

  • Oh, Yun-Jin
    • Korean Journal of Weed Science
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    • v.3 no.2
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    • pp.246-251
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    • 1983

  • In recent years weed flora have been changed to perennial dominance in paddy field being affected by the cropping systems and cultural practices. The perennial weeds are difficult to be controlled with annual herbicides which occupy 94% of total consumption of herbicides. The weeds competed more with rice plants in early tillering stages in machine transplanted field. For the reasonable and effective weed control, it is advisable to use single ai herbicides in hand transplanting field, but combined and mixed herbicides should be applied in machine transplanting field.

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Current Status and Perspective of Weed Management in Herbicide-Resistant Crops (제초제 저항성작물에서 잡초관리기술 동향 및 전망)

  • Pyon, Jong Yeong;Chang, Kyu Seob;Lee, Jeung Joo;Park, Kee Woong
    • 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.

  • https://doi.org/10.5660/WTS.2013.2.3.221 인용 PDF KSCI KPUBS

Current Status and Perspectives of Weed Science in the World (세계 잡초연구 동향 및 전망)

  • Lee, In-Yong;Park, Tea-Seon;Choi, Jung Sup;Ko, Young-Kwan;Park, Kee Woong;Seo, Hyun-A
    • 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.

  • https://doi.org/10.5660/WTS.2016.5.3.105 인용 PDF KSCI

A Survey of Weed Occurrence on Paddy Field in Korea (국내 논잡초 발생분포조사)

  • Ha, Huen-Young;Hwang, Ki Seon;Suh, Su Jeoung;Lee, In-Yong;Oh, Young-Ju;Park, Jungsoo;Choi, Jun-Keun;Kim, Eun Jeong;Cho, Seung Hyun;Kwon, Oh-Do;Im, Il-Bin;Kim, Sang-Kuk;Seong, Deok-Gyeong;Chung, Young-Jae;Lee, Wook-Jae;Kim, Chang-Seok;Lee, Jeongran;Park, Jae-Eup;Park, Kee Woong
    • Weed & Turfgrass Science
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    • v.3 no.2
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    • pp.71-77
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    • 2014

  • Surveys of weed species in paddy fields were conducted in Korea to identify weed occurrence from June to September 2013. Total 3,434 sites of paddy fields in 155 City/Gun, eight Provinces were investigated. From the nation-wide survey, 90 weed species in 28 families were identified and classified to 52 annuals, 3 biennials and 35 perennials. Based on the occurrence ratio, the most weed species belonged to Poaceae (18 species). 17, 8 and 6 weed species belonged to Cyperaceae, Scrophulariaceae and Polygonaceae, respectively, and these 49 weed species in the most four families accounted for 54% of total weed occurrence. The most dominant weed species in Korean paddy fields were Echinochloa spp. (17.4%), followed by Monochoria vaginalis (12.4%), Eleocharis kuroguwai (7.8%), Bidens tripartite (9.27%), Scirpus juncoides (6.2%) and Sagittaria sagittifolia (6.1%). This information could be useful for estimation of future weed occurrence, weed population dynamics and establishment of weed control methods in paddy fields of Korea.

  • https://doi.org/10.5660/WTS.2014.3.2.71 인용 PDF KSCI KPUBS