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http://dx.doi.org/10.5660/WTS.2014.3.1.6

A Survey of Weeds Occurrence on Paddy Fields in Gyeongbuk Province in Korea  

Kim, Sang Kuk (Divion of Crop Breeding, Gyeongsangbuk-do Agricultural Research & Extension Services)
Kim, Hak Yoon (Department of Global Environment, Keimyung University)
Publication Information
Weed & Turfgrass Science / v.3, no.1, 2014 , pp. 6-12 More about this Journal
Abstract
The survey of weed occurrence was conducted to identify problem weed species in the paddy field. The 320 sites of the 13 regions in Gyeongbuk Province were investigated from June to July, 2013. In the whole region, 51 weed species were identified including 34 annuals and 17 perennials. The highest importance value of annual weed and perennial was dominant 88.4 and 48.7%, in Gumi region, respectively. The most dominant weed species in paddy fields of Gyeongbuk Province were Monochoria vaginalis var. plantaginea (10.80%), followed by Lemna paucicostata (10.74%), Bidens tripartite (8.77%), Echinochloa oryzoides (7.17%), and Scirpus juncoides (6.20%). The similarity of paddy weeds in 13 regions observed through TWINSPAN analysis was distinguished by Ludwigia prostrata, Scirpus juncoides, Lindernia dubia, Polygonum aviculare, and Alopecurus aequalis var. amurensis. The weed species, Ludwigia prostrata, was divided into the four regions, Gyeongju, Gumi(direct seeding cultivation), Youngcheon and Euiseong and ten regions, Gumi, Bonghwa, Sanju, Goryung, Youngdeog, Pohang, Sanju, Andong, Yecheon, and Cheongdo.
Keywords
Gyeongbuk Province; Paddy field weeds; Weed occurrence;
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