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http://dx.doi.org/10.5660/WTS.2013.2.1.008

Ecological Traits of Weed Flora with Different Soil Moisture in Remodeled Paddy Field of Nakdong River  

Hwang, Jae-Bok (Department of Functional Crop, Functional Cereal Crop Research Division, National Institute of Crop Science, RDA)
Yun, Eul-Soo (Department of Functional Crop, Functional Cereal Crop Research Division, National Institute of Crop Science, RDA)
Jung, Ki-Yeol (Department of Functional Crop, Functional Cereal Crop Research Division, National Institute of Crop Science, RDA)
Park, Chang-Young (Department of Functional Crop, Functional Cereal Crop Research Division, National Institute of Crop Science, RDA)
Choi, Young-Dae (Department of Functional Crop, Functional Cereal Crop Research Division, National Institute of Crop Science, RDA)
Jeon, Seong-Ho (Department of Functional Crop, Functional Cereal Crop Research Division, National Institute of Crop Science, RDA)
Oh, In-Seok (Department of Functional Crop, Functional Cereal Crop Research Division, National Institute of Crop Science, RDA)
Publication Information
Weed & Turfgrass Science / v.2, no.1, 2013 , pp. 8-14 More about this Journal
Abstract
Collection of weeds were done in 3 remodeled paddy fields located in different districts with different soil moisture conditions such as Samolpo district (14.6%), Gimhae (9.8%) and Chilhyun (5.6%). Remodeled paddy fields composed of 62 plant species belonging to 23 families. Among 23 families, Compositae was the largest family with 11 species belonged to (17.7%) followed by Poaceae with 9 species (14.5%), Leguminosae with 8 species (12.9%), Cyperaceae with 7 species (11.3%), and Polygonaceae with 5 species (8.1%). Summed dominance ratio of each species based on number, coverage, frequency, and plant height in Samolpo district was Echinochloa oryzoides (100%) > Cyperus difformis (9.0%) > Bidens frondosa (5.3%) > Panicum dichotomiflorum (4.8%) > Eclipta prostrata (4.4%). In Gimhae; Digitaria ciliaris (100%) > Panicum dichotomiflorum (49.4%) > Echinochloa oryzoides (48.8%) > Persicaria hydropiper (27.1%) > Chenopodium ficifolium (10.2%), and in Chilhyun were Panicum dichotomiflorum (90.8%) > Digitaria ciliaris (66.7%) > Cyperus iria (8.6%) > Bidens frondosa (7.6%). Total dry weight of weeds recorded was 535.4 g $m^{-2}$, 316.1 g $m^{-2}$ and 346.2 g $m^{-2}$ in Samolpo, Gimhae and Chilhyun districts, respectively. Simpson's index was calculated to 0.09~0.28, which showed that weed occurrence in remodeled paddy fields with different soil moistures varied.
Keywords
Dominant weed; Remodeled Upland field; Soil moisture; Weed community;
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Times Cited By KSCI : 4  (Citation Analysis)
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