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Lee Sang-Bok;Ku Yeon Chung;Seong Ki Young;Song Duck Young;Seo Kyung In;Shin Jin Chul
- KOREAN JOURNAL OF CROP SCIENCE
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- v.50 no.2
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- pp.79-83
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- 2005
Rice and weed interference in the paddy field caused by resource competition and allelopathy. Evaluation method of active weed suppressive behavior of rice to weed was developed by eliminating light competition at soil condition. Twenty eight days old rice seedlings (6-7 leaf stage) which was grown at saturated, no drainage pot were clipped above $3\~4cm$ from the soil surface. Weeds seeded around clipped rice stem, named ratoon seeding screening method, showed varietal suppressive difference to Echinochloa crus-galli, Echinochloa crusgalli var. praticola and Monochoria vaginalis. Potential allelopathic rice varieties, Sathi, AC1423 and PI312777 showed better suppressive activity to weed seedling growth than Nonganbyeo and Keumobyeo. Weed suppression of one plant of rice cultivars could be evaluated by the cell size of $2.5\times2.5cm$ at rice clipping of seedling 29 days after rice seeding.
PDF KSCI

Lee, Jeong-Ran;Kim, Chang-Seok;Lee, In-Yong
- Korean Journal of Weed Science
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- v.31 no.3
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- pp.313-318
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- 2011
Cyperus esculentus L., a cosmopolitan noxious weed, has been recorded for the first time in a pepper agricultural field in Icheon of Gyounggi, Korea. It is not clear yet how and when it was introduced into Korea. Conventional weed control methods including hand weeding and application of herbicides were only partially effective in controlling the weed. It is estimated that the weed has a high risk potential to spread further out quickly and cause serious damages to Korean agriculture soon. Therefore, its spread should be promptly restricted.
https://doi.org/10.5660/KJWS.2011.31.3.313 인용 PDF KSCI