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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 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.
농업용 무인 헬기를 이용한 benzobicyclon 혼합제의 잡초방제 효과
박수혁(Su Hyuk Park),원옥재(Ok Jae Won),엄민용(Min Yong Eom),한성민(Sung Min Han),황기선(Ki Seon Hwang),서수정(Su Jung Seo),박기웅(Kee Woong Park) 충남대학교 농업과학연구소 2014 농업과학연구 Vol.41 No.2
This study was conducted to evaluate the efficacy of benzobicyclon mixtures by using Remote-controlled aerial application (RCAA) to control annual and perennial weeds in rice paddy field. Eight annual weed species including Echinochloa crus-galli L. and three perennial weeds were dominated in the experimental field. Application of benzobicyclon mixtures using RCAA was highly effective to control both annual and perennial weed species. When compared with untreated control, no visual injuries were detected at single and double dosage of benzobicyclon mixtures. Finally, rice yield in the benzobicyclon mixtures was as much as that in the hand weeding. This study indicates that benzobicyclon mixtures using RCAA can be applied to control both annual and perennial weed species in rice paddy field.
Benzobicyclon 혼합제의 제형 및 처리시기가 제초활성 및 벼 생육에 미치는 영향
원옥재(Ok Jae Won),정종휘(Jong Hee Jeong),송재은(Jae Eun Song),박수혁(Su Hyuk Park),황기선(Ki Seon Hwang),한성민(Sung Min Han),변종영(Jong Yeong Pyon),박기웅(Kee Woong Park) 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.4
This study was conducted to evaluate the efficacy of two different formulations and application timings of benzobicyclon+penoxsulam+pyrzaosulfuron-ethyl (BPP) in rice field. BPP granule (GR) and tablet (TB) controlled more than 90% of four weed species 10 and 15 days after sowing in direct seeding when compared with untreated control. BPP TB was highly effective to control herbicide resistant Scirpus juncoides and Monochoria vaginalis both 10 and 15 days after transplanting (DAT). BPP GR controlled 94.0 and 96.5% of S. juncoides and M. vaginalis, respectively 10 DAT, but its efficacy decreased to 88.5 and 49.8% respectively 15 DAT. When compared with untreated control, no visual injuries were detected at 255 and 510 g a.i./ha of BPP. The yield of rice increased in both BPP GR and TB in transplanting and direct seeding rice cultivation when compared with untreated control. Based on these data, early application (10 DAT) of BPP GR and TB can be applied to provide effective weed control, especially in the field infested with herbicide resistant weed species.