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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Weed Science
Journal Basic Information
Journal DOI :
The Korean Society of Weed Science
Editor in Chief :
Volume & Issues
Volume 30, Issue 4 - Dec 2010
Volume 30, Issue 3 - Sep 2010
Volume 30, Issue 2 - Jun 2010
Volume 30, Issue 1 - Mar 2010
Selecting the target year
Development of The New Turf Herbicide Methiozolin
Koo, Suk-Jin ; Hwang, Ki-Hwan ; Jeon, Man-Seok ; Kim, Sung-Hun ; Lim, Jong-Soo ; Lee, Dong-Guk ; Chung, Kun-Hoe ; Ko, Young-Kwan ; Ryu, Jae-Wook ; Koo, Dong-Wan ; Woo, Jae-Chun ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 323~329
DOI : 10.5660/KJWS.2010.30.4.323
Methiozolin (5-(2,6-difluoro-benzyloxymethyl)-5-methyl-3-(3-methyl- thiophen-2-yl)- 4,5-dihydro-isoxazole) is a new turf herbicide in isoxazoline chemistry. The herbicide controls grass weeds and has a high safety to various cool and warm season turfgrasses. This paper describes basic chemical, biological, and regulatory information of methiozolin.
Development of "Miscanthus" the Promising Bioenergy Crop
Moon, Youn-Ho ; Koo, Bon-Cheol ; Choi, Yoyng-Hwan ; Ahn, Seung-Hyun ; Bark, Surn-Teh ; Cha, Young-Lok ; An, Gi-Hong ; Kim, Jung-Kon ; Suh, Sae-Jung ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 330~339
DOI : 10.5660/KJWS.2010.30.4.330
In order to suggest correct direction of researches on Miscanthus spp. which are promising bioenergy crop, authors had reviewed and summarized various literature about botanical taxonomy, morphology and present condition of breeding, cultivation and utilization of miscanthus. Among the genus of Miscanthus which are known 17 species, the most important species are M. sinensis and M. sacchariflorus which origin are East Asia including Korea, and M. x giganteus which is inter-specific hybrid of tetraploid M. sacchariflorus and diploid M. sinensis. Miscanthus is superior to other energy crops in resistance to poor environments including cold, saline and damp soil, nitrogen utilization efficiency, budget of input energy and carbon which are required for producing biomass and output which are stored in biomass. The major species for production of energy and industrial products including construction material in Europe, USA and Canada is M. x giganteus which was introduced from Japan in 1930s. In present, many breeding programs are conducted to supplement demerits of present varieties and to develop "Miscanes" which is hybrid of miscanthus and sugar cane. In Korea, the researches on breeding and cultivation of miscanthus were initiated in 2007 by collecting germplasms, and developed "Goedae-Uksae 1" which is high biomass yield and "mass propagation method of miscanthus" which can improve propagation efficiency in 2009. In order to develop "Korean miscanthus industry" in future, the superior varieties available not only domestic but also foreign market should be developed by new breeding method including molecular markers. Researches on production process of cellulosic bio-ethanol including pre-treatment and saccharification of miscanthus biomass also should be strengthen.
Biorefinery Based on Weeds and Agricultural Residues
Hwang, In-Taek ; Hwang, Jin-Soo ; Lim, Hee-Kyung ; Park, No-Joong ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 340~360
DOI : 10.5660/KJWS.2010.30.4.340
The depletion of fossil fuels, ecological problems associated with
emissions climate change, growing world population, and future energy supplies are forcing the development of alternative resources for energy (heat and electricity), transport fuels and chemicals: the replacement of fossil resources with
neutral biomass. Several options exist to cover energy supplies of the future, including solar, wind, and water power; however, chemical carbon source can get from biomass only. When used in combination with environmental friend production and processing technology, the use of biomass can be seen as a sustainable alternative to conventional chemical feedstocks. The biorefinery concept is analogous to today's petroleum refinery, which produce multiple fuels and chemical products from petroleum. A biorefinery is a facility that integrates biomass conversion processes and equipment to produce fuels, power, and value-added chemicals from biomass. Biorefinery is the co-production of a spectrum of bio-based products (food, feed, materials, and chemicals) and energy (fuels, power, and heat) from biomass [definition IEA Bioenergy Task 42]. By producing multiple products, a biorefinery takes advantage of the various components in biomass and their intermediates therefore maximizing the value derived from the biomass feedstocks. A biorefinery could, for example, produce one or several low-volume, but high-value, chemical or nutraceutical products and a low-value, but high-volume liquid transportation fuel such as biodiesel or bioethanol. Future biorefinery may play a major role in producing chemicals and materials as a bridge between agriculture and chemistry that are traditionally produced from petroleum. Industrial biotechnology is expected to significantly complement or replace the current petroleum-based industry and to play an important role.
Analytical Method for MCPA Residue in Brown Rice and Rice Straw by HPLC/UVD
Yoo, Ki-Yong ; Kang, Dae-Won ; Choi, Yong-Hwa ; Han, Seong-Soo ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 361~370
DOI : 10.5660/KJWS.2010.30.4.361
This study was carried out to establish the analytical method of MCPA residue in brown rice and rice straw by HPLC/UVD. When MCPA was extracted from sample under the pH 3.6 by adding acetone 200 mL and 1N-HCl 100 mL, the extraction efficiency was high by 87%. And purification efficiency was high by 83% when 5 mL of 1% methanol/acetonitrile was eluated by the florisil Sep-pak cartridge column. From spiking of
of MCPA to control sample, respectively, average recovery rate of MCPA in brown rice was 96.0% and 94.9% and that in rice straw was 92.5% and 88.2%, respectively. Precision of experiment was very high by relative standard deviation of 1.5% to 5.7%. In brown rice and rice straw treated with bentazone+MCPA (11+1.2%) of 30 kg and 60 kg per ha at 30 days after rice transplanting, respectively, maximum residue limit was under
of the recommended rate of Korean Food and Drug Administration. From the above results, the analytical procedure of MCPA in plants such as hydrolysis, saponification and derivatization were ommited, and retention time was faster and recovery rate was higher than the existed results of HPLC/UVD. Therefore, these results were greatly improved and seemed to be usefully applied for residue analysis of MCPA in plants.
Allelopathic Effects of Crimson Clover, Hariy Vetch and Rye on Germination and Radicle Elongation of Several Crops
Lee, Ji-Hyun ; Lee, Byung-Mo ; Jeon, Seung-Ho ; Chung, Jong-Il ; Kim, Min-Chul ; Shim, Sang-In ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 371~379
DOI : 10.5660/KJWS.2010.30.4.371
Crimson clover (Trifolium incarnatum), hairy vetch (Vicia villosa) and rye (Secale cereale) are common leguminous cover crops. Because they contain water-soluble allelopathic substances that show a variable level in tissue depending on growth stage of the plants, the weed inhibition effects are dependent on the growth stage of cover crops. This study investigated the allelopathic effects of crimson clover, hairy vetch and rye on soybean, radish, oilseed rape and lettuce seeds germination and seedling growth. We used extract that were prepared from the shoots of crimson clover, hairy vetch and rye at different growth stages, vegetative growth stage, flowering stage, and fruiting stage. Applications of aqueous extracts from three growth stage of cover crops strongly affected to oilseed rape and lettuce seeds germination but the treatment resulted in a slight inhibition of the germination in soybean and radish. Radical length was more sensitive to aqueous extracts than seed germination rate. Especially, three cover crops extracts at vegetative growth stage highly inhibited seedling root growth of oilseed rape and lettuce by over 80% and 90% respectively. Furthermore, the
values were lowest in the treatment of extracts from vegetative growth stage and the level of phenolics was decreased by the order of vegetative growth stage, flowering stage and fruiting stage.
Rapid Diagnosis of Resistance to Glufosinate-ammonium in Transgenic Sweet Potato
Kuk, Yong-In ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 380~389
DOI : 10.5660/KJWS.2010.30.4.380
Transgenic herbicide-resistant sweet potato plants [Ipomoea batatas (L.) Lam.] produced through a biolistic transformation were used in this study. The objective of this research was to find out a rapid and reliable assay method for confirming glufosinate-ammonium resistance. The techniques tested include whole-plant bioassay, one leaf bioassay, and leaf disk bioassay. Parameters investigated in this study were leaf injury and ammonium accumulation at 1 and 5 days after treatment of glufosinate-ammonium. In the leaf disk bioassay, leaf injury of the transgenic line 7171 was 1.9-fold less affected by glufosinate-ammonium than the wild type. The leaf injury of 7171 in one leaf and whole-plant bioassays was 59- and 92-fold less affected by glufosinate-ammonium, respectively, compared with that of the wild type. Leaf disk, one leaf, and whole-plant bioassays showed that ammonium accumulation of the 7171 was 2 to 20-, 4 to 43-, and 6 to 115-fold less affected by 0.5-5 mM glufosinate-ammonium than that of the wild type. All three bioassays successfully distinguished the resistance from the transgenic lines, but one leaf bioassay is the simplest and quickest. Leaf injury and ammonium accumulation were the same in leaves 1, 3, 5, 7, and 10 of 3 mM glufosinate-ammonium treated plants or nontreated plants. The one leaf bioassay was chosen as the standard procedure for future confirmation of resistance in transgenic sweet potato because it is a rapid and reliable assay.
The Growth and Yield of Soybean as Affected by Competitive Density of Cuscuta pentagona
Song, Seok-Bo ; Lee, Jae-Saeng ; Kang, Jong-Rae ; Ko, Jee-Yeon ; Seo, Myung-Chul ; Woo, Koan-Sik ; Oh, Byeong-Geun ; Nam, Min-Hee ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 390~395
DOI : 10.5660/KJWS.2010.30.4.390
This study was conducted to predict reduction of soybean yield as affected by different densities of Cuscuta pentagona. All data were fitted to Cousens' rectangular hyperbola model to estimate parameters for predicting soybean yield loss. The yield of soybean in the various densities (1 to 48 plants
) of C. pentagona reduced by 80.3 to 99.7%, respectively. Among yield components, number of pods was the most significantly influenced by weed interferences. The prediction model for soybean yield as affected by weed competition was as follows: Y= 274.6783/(1+4.3522X),
in C. pentagona. Economic threshold levels calculated using cousens' equation was 0.004 plants
in C. pentagona.
Common Ragweed-Derived Phenolic Compounds and Their Effects on Germination and Seedling Growth of Weed Species
Choi, Bong-Su ; Song, Duk-Young ; Sung, Jwa-Kyung ; Kim, Chung-Guk ; Song, Beom-Heon ; Woo, Sun-Hee ; Lee, Chul-Won ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 396~404
DOI : 10.5660/KJWS.2010.30.4.396
Phenolic compounds, which are products of secondary metabolism, have been demonstrated to be widespread growth substances in plants. The objectives of this study were to identify the phenolic compounds in common ragweed (Ambrosia artemisiifolia var. elatior) by HPLC and to evaluate their effects on germination and seedling growth of three weed species. Under controlled conditions in Petri dishes at
M solutions of phenolic compounds were evaluated in seed germination tests. Four phenolic compounds (caffeic acid, O-coumaric acid,
-coumaric acid and ferulic acid) in common ragweed plant were identified and their concentration was increased from the stage before flowering through full flowering stage. Treatment of O- and
-coumaric acids delayed the seed germination of Digitalia ciliaris, while the treatment of caffeic acid delayed the seed germination of Echinochloa crus-galli. In time to 50% germination (
), phenolic compounds at
M promoted in Cyperus microiria and E. crus-galli but the level of
M delayed the
of those weeds. The O-coumaric acid inhibited seed germination and seedling growth of the tested weeds and especially it perfectly inhibited the root growth of E. crus-galli.
Vegetation Types and Soil Environment as Affected by Fallow Paddy
Oh, Young-Ju ; Lee, Byung-Mo ; Sohn, Soo-In ; Lee, Yong-Ki ; Nam, Hong-Sik ; Lee, Sang-Beom ; Kang, Chung-Kil ; Jee, Hyeong-Jin ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 405~411
DOI : 10.5660/KJWS.2010.30.4.405
The phytosociological study was carried out to investigate the structural characteristics of fallow paddy vegetation in Korea. The vegetation data of total 22 relev
s were analyzed by the Zurich-Montpellier school's method. Six syntaxa (1 subassociations and 5 communities) of fallow paddy were recognized: Polygonetosum thunbergii typicum subass. nov. hoc., Aneilema keisak community, Juncus effusus var. decipiens community, Phragmites commuis community, Monochoria vaginalis var. plantaginea community, Typha orientalis community of Polygonetum thunbergii Lohm. et Miyawaki 1962. Detrended correspondence analysis showed that Aneilema keisak community and Monochoria vaginalis var. plantaginea community were negatively correlated with soil total nitrogen. Polygonetosum thunbergii typicum subass. nov. hoc. and Phragmites commuis community was distributed in the soil with low pH.
Herbicidal Effects and Crop Selectivity of Sorgoleone, a Sorghum Root Exudate under Greenhouse and Field Conditions
Uddin, Md. Romij ; Won, Ok-Jae ; Pyon, Jong-Yeong ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 412~420
DOI : 10.5660/KJWS.2010.30.4.412
Weeds are known to cause enormous losses due to their interference in agro ecosystems. Because of environmental and human health concerns, worldwide efforts are being made to reduce the heavy reliance on synthetic herbicides that are used to control weeds. In this regard phytotoxicity of allelochemical sorgoleone, which is a major component of the hydrophobic root exudates of Sorghum bicolor was evaluated in different weed species and also its crop selectivity in greenhouse and field conditions. Sorgoleone strongly inhibited the growth of different weeds by pre-emergence and post-emergence applications both in greenhouse and field conditions. Post-emergence application of sorgoleone on 21-day-old weed seedlings had a greater inhibitory effect than the pre-emergence application. Again, broadleaf weed species were more susceptible than grass species to the application of sorgoleone at both stages of growth. Growth of broadleaf weed species was suppressed by greater than 80% for most of the weed species except a few species and among them the species Rumex japonicus and Galium spurium were completely suppressed at
sorgoleone. Like greenhouse trial, sorgoleone was more effective for broadleaf weed species followed by sedge and grass weed species in the field condition. The growth inhibition of weeds was slightly lower in field condition compared to greenhouse condition. The crop species like rice, barley, wheat, corn, perilla, tomato, soybean and Chinese cabbage were tolerant to sorgoleone while lettuce and cucumber were slightly susceptible to sorgoleone. Consequently, sorgoleone may be applied to control weeds in organic farms without affecting the growth of crop.
Foliage Contact Herbicidal Activity of Dehydrocostus lactone Derived from Saussurea lappa
Cho, Kwang-Min ; An, Xue-Hua ; Chon, Jae-Kwan ; Kim, Hyo-Sun ; Chun, Jae-Chul ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 421~428
DOI : 10.5660/KJWS.2010.30.4.421
A foliage contact herbicidal substance was separated from ethyl ether fraction in n-hexane extract of Saussurea lappa roots and identified as dehydrocostus lactone [(3aS,6aR,9aR,9bS)-3,6,9-trimethylidene-3a,4,5,6a,7,8,9a,9b-octahydroazuleno[5,4-d]furan-2-one](DHCL). When DHCL at 4,000 ppm was foliage-applied to two grasses and two broadleaf plants, greater than 85% necrotic injury was obtained from large crabgrass, maize and soybean, whereas only about 40% necrotic injury appeared in black nightshade, indicating that DHCL has no gross morphological selectivity, but shows difference in contact response among the plant species tested. Conductivity in incubation medium of the leaf disks treated with DHCL increased as the incubation time continued. Relatively low contact injury in black nightshade as compared with the other three plant species tested was attributed to decrease in absorption of DHCL due to relatively high amount of cuticle. DHCL did not require light in the herbicidal action and there were no inhibitory effects on seed germination and cell elongation. Acetyl-CoA carboxylase activity was inhibited by 30% and 58% at
DHCL, respectively. These results suggested that the herbicidal action of DHCL was related with inhibition of fatty acid synthesis which in turn caused to weaken cell membrane integrity.
Herbicidal Activity of Chrysophanic Acid in Semi-field Condition
Choi, Jung-Sup ; Jang, Hyun-Woo ; Seo, Bo-Ram ; Hwang, Hyun-Jin ; Kim, Jae-Deog ; Kim, Jin-Seog ; Chun, Jae-Chul ; Kim, Song-Mun ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 429~436
DOI : 10.5660/KJWS.2010.30.4.429
Herbicidal activity and characteristics of chrysophanic acid were investigated in semi-field condition. At early and middle post-emergence, Trifolium repens appeared to be very susceptible to chrysophanic acid of
. However, herbicidal activity of chrysophanic acid of
estimated by visual injury to Artemisia princeps was not caused considerable phytotoxicity. Also by foliar application, the concentration of crysophanic acid for effectively control to Polygonum aviculare was much higher than
. Herbicidal activity of chrysophanic acid to Echinochloa crus-galli, Cypres difformis, Setaria viridis, Digitaria sangguinalis, Bidens tripartita by foliar application was more effective at concentration ranges from 4,000 to
. These results suggest that chrysophanic acid demanded for higher than
to successful weed control in the field condition.
Isolation of Herbicidal Compound from Bulbs of Lycoris chinensis var. sinuolata K.H.Tae & S.T.Ko
Jang, Ho-Jin ; Kim, Kun-Woo ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 437~444
DOI : 10.5660/KJWS.2010.30.4.437
This study was conducted to determine the herbicidal activity of allelochemicals and identify herbicidal compounds in bulbs of Lycoris chinensis var. sinuolata. Methanol extract was purified by a series of silica gel flash column chromatography and HPLC. The final HPLC gave two active fractions and an herbicidal compound was obtained. By GC/MS analysis, the herbicidal compound was identified as montanine (
-methyl pancracine), an isoquinoline alkaloid. Montanine showed 100% of growth inhibition on the shoot and root of barnyardgrass (Echinochloa crus-galli) seedlings at
as compared with the control.
Herbicidal Efficacy and Diffusibility of 500g Great Granule for Remote-Controlled Aerial Application in Paddy Rice
Yoon, Cheol-Su ; Lee, Sheong-Chun ; Kim, Kyung-Hyun ; Lee, Kye-Hwan ; Seok, Chang-Soo ; Kim, Hyun-Jae ; Cho, Tae-Kyoung ; Hwang, In-Cheon ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 445~453
DOI : 10.5660/KJWS.2010.30.4.445
This study was conducted to investigate herbicidal efficacy and diffusibility of halosulfuron-methyl+mefenacet in water treated with 500 g great granule (GG) and 3 kg granule (GR). The 500 g GG was been spreading on the surface of the water within 6 minutes, 53 seconds, and it's active ingredient was diffused in the water bath of
size between 30 and 60 minutes. In addition, the diffusion of 500 g GG was influenced by moisture contents, so it have to immediately use 500 g GG in paddy fields when it was been unpacked. The herbicidal efficacy of the 500 g GG and 3 kg GR of halosulfuron-methyl+mefenacet was excellent to most weed species, but showed different efficacy for the control of Aneilema keisak and Scirpus juncoides, that was may be distribution pattern of active ingredient as different formulation.
The Effect of Apple Tree Growth and Apple Yield from the Misuse of Non Selective Herbicide, Glufosinate-ammonium
Lee, In-Yong ; Park, Yong-Seog ; Kim, Sung-Min ; Kang, Cheol-Ah ; Chun, Byeong-Chul ; Park, Jae-Eup ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 454~459
DOI : 10.5660/KJWS.2010.30.4.454
This study was conducted to investigate the phytotoxic reaction and the impact on the growth of apple fruit included the yield amount by misuse of non-selective herbicide, glufosinate-ammonium in apple field and for the study, 4 cultivars of apple were tested. The results showed that the highest phytotoxic degree was observed on Sansa-cultivar and then the degree was diminished on Tsugaru, Hongro and Fuji in order in the application year. In one year after application, the highest phytotoxic degree was showed on Fuji and then diminished on Tsugaru, Hongro and Sansa in order. However, in one year after application, the phytotoxic symptom was negligible in comparison with the degree in the year of application and the flowering and fruiting were reduced 30% only in Fuji, but in the other cultivars, the phytotoxic symptoms were not observed. Meanwhile, the residue of glufosinate-ammonium was below the detection limit as 0.04ppm in all tested cultivars and in 2years after application, the phytotoxic symptom was not observed in all cultivars of the apple.
Report on the 49th Annual Meeting of the Weed Science Society of Japan
Hwang, Jae-Bok ;
Korean Journal of Weed Science, volume 30, issue 4, 2010, Pages 460~467
DOI : 10.5660/KJWS.2010.30.4.460