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황기선(Ki Seon Hwang),엄민용(Min Yong Eom),박수혁(Su Hyuk Park),원옥재(Ok Jae Won),서수정(Su Jeoung Suh),이인용(In Yong Lee),박기웅(Kee Woong Park) 충남대학교 농업과학연구소 2014 Korean Journal of Agricultural Science Vol.41 No.4
This study was conducted in order to utilize the basic data for weed control by surveying the occurrence of weed species. Total 63 sites of upland Chinese cabbage fields in Chungnam Provinces were investigated. The result of survey, 71 weed species in 25 families were identified and classified to 39 annuals, 16 biennials and 16 perennials. Based on the occurrence ratio, the most weed species belonged to Compositae (20 species). 8, 6 and 5 weed species belonged to Poaceae, Cruciferae and Polygonaceae, respectively, and these 10 weed species in the most six families accounted for 50% of total weed occurrence. The most dominant weed species in upland Chinese cabbage fields were Portulaca oleracea (8.07%), followed by Digitaria ciliaris (7.54%), Rorippa palustris (6.44%), Chenopodium album (5.73%), Echinochloa crus-galli (5.02%) and Cyperus amuricus (3.95).
황기선(Ki Seon Hwang),엄민용(Min Yong Eom),박수혁(Su Hyuk Park),원옥재(Ok Jae Won),서수정(Su Jeoung Suh),이인용(In Yong Lee),박기웅(Kee Woong Park) 충남대학교 농업과학연구소 2014 농업과학연구 Vol.41 No.4
This study was conducted in order to utilize the basic data for weed control by surveying the occurrence of weed species. Total 63 sites of upland Chinese cabbage fields in Chungnam Provinces were investigated. The result of survey, 71 weed species in 25 families were identified and classified to 39 annuals, 16 biennials and 16 perennials. Based on the occurrence ratio, the most weed species belonged to Compositae (20 species). 8, 6 and 5 weed species belonged to Poaceae, Cruciferae and Polygonaceae, respectively, and these 10 weed species in the most six families accounted for 50% of total weed occurrence. The most dominant weed species in upland Chinese cabbage fields were Portulaca oleracea (8.07%), followed by Digitaria ciliaris (7.54%), Rorippa palustris (6.44%), Chenopodium album (5.73%), Echinochloa crus-galli (5.02%) and Cyperus amuricus (3.95).
오지원(Ji-won Oh),황기선(Ki-seon Hwang),이정(Jeng Lee),김수영(Sooyoung Kim) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7
In this paper, we propose a design of the layered coding with block turbo codes. The proposed scheme can be used efficiently for multimedia broadcasting and multicasting services by adaptive selection of a modulation and coding scheme at a receiver. This paper demonstrates various design examples of the layered coding using rate compatible block turbo codes.
벼 담수직파 시 Benzobicyclon 혼합제와 Carfentrazone-ethyl 혼합제의 제초활성
박수혁(Su Hyuk Park),허유리(Yu Ri Heo),원옥재(Ok Jae Won),황기선(Ki Seon Hwang),엄민용(Min Yong Eom),한성민(Sung Min Han),박기웅(Kee Woong Park) 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.3
This study was conducted to evaluate the efficacy of herbicide mixtures of benzobicyclon and carfentrazone-ethyl in direct-seeding flooded rice. The efficacy of benzobicyclon mixtures and carfentrazone-ethyl mixtures was greater than that of pyrazosolfuron-ethyl + pyriminobac-methyl GR. Herbicide mixtures with benzobicyclon controlled average 97% and herbicide mixtures with carfentrazone-ethyl controlled average 95% 60 days after application. When compared with untreated control, no visual injuries were detected at single and double dosage of herbicide mixtures. The yield of rice increased in both benzobicyclon and carfentrazone-ethyl treatments when compared with pyrazosolfuron-ethyl + pyriminobacmethyl GR. Based on these data, combinations of these herbicides can be applied to provide effective weed management in rice field.
벼 담수직파에서 Carfentrazone-ethyl 혼합제의 제초활성
원옥재(OK Jae Won),박기웅(Kee Woong Park),박수혁(Su Hyuk Park),엄민용(Min Yong Eom),황기선(Ki Seon Hwang),김영태(Young Tae Kim),변종영(Jong Yeong Pyon) 충남대학교 농업과학연구소 2015 농업과학연구 Vol.42 No.2
This study was conducted to evaluate the herbicidal efficacy of carfentrazone-ethyl mixtures in direct-seeding flooded rice. The efficacy of three different carfentrazone-ethly mixtures was greater than pyrazosulfuron-ethyl pyriminobac-methyl GR (PP GR). Weeding efficacy of three different carfentrazone-ethly mixtures was more than 96.9%. No phytotoxic effect was observed in the rice based on the plant height and the number of tillers. Yield of rice un three different carfentrazone-ethly mixtures application was more than both in the PP GR and in the hand weeding. Based on these data, three different carfentrazone-ethly mixtures can be applied to provide an effective weed management in direct-seeding flooded rice.