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http://dx.doi.org/10.5660/WTS.2014.3.2.95

The Occurrence of Weed species in Cultivated Ligularia fischeri Fields  

Lee, In-Yong (Crop Protection Division, National Academy of Agricultural Science, RDA)
Kim, Chang-Seok (Crop Protection Division, National Academy of Agricultural Science, RDA)
Lee, Jeongran (Crop Protection Division, National Academy of Agricultural Science, RDA)
Kim, Jonghwan (Gangwon-Do Agricultural Research & Extension Services)
Kim, Kyung-Hoon (Crop Protection Division, National Academy of Agricultural Science, RDA)
Kim, Mi-Seon (Crop Protection Division, National Academy of Agricultural Science, RDA)
Song, Hee-Kun (Crop Protection Division, National Academy of Agricultural Science, RDA)
Kim, Duk-Hwan (College of Agricultural Kyungpook National University)
Publication Information
Weed & Turfgrass Science / v.3, no.2, 2014 , pp. 95-101 More about this Journal
Abstract
This study was conducted in order to utilize the basic data for weed control by surveying the occurrence of weed species and the degree of damages caused by those weeds occurred in cultivated Ligularia fischeri fields. Survey was carried out five times, on May, June, July, August and October in 2013. The weed flora was composed of a total of 104 weeds, 37 families, of which 55 species were annual, 25 species were biennial, and 24 were perennial plants. Twenty-six exotic species were included as well. Dominance was the highest with Chenopodium album followed by Stellaria aquatica, Echiochloa crus-galli, Conyza canadensis, and Artemisia princeps etc. in order. In the PCA plot analysis, weeds occurred in cultivated L. fischeri fields were divided into three groups, Persicaria thunbergii-Bidens frondosa community, Chenopodium album community and Capsella bursapastoris community. The degree of damages in cultivated L. fischeri fields was investigated by weighing roots of L. fischeri. We found that 56% decreased root weight in no weeding plots comparing to that in weed management plots. We infer from this result that decreased roots will affect to the growing of L. fischeri in following year.
Keywords
Ligularia fischeri; PCA plot analysis; Weed;
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