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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 29, Issue 4 - Dec 2009
Volume 29, Issue 3 - Sep 2009
Volume 29, Issue 2 - Jun 2009
Volume 29, Issue 1 - Mar 2009
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Distribution Patterns, Host Status and Damage Susceptibility of Crop Plants and Weed Species to Cuscuta campestris Yuncker in Malaysia
Baki, B.B. ; Remy, M.O. ; Aini, H. ; Khalijah, A. ; Fujii, Y. ; Annuar, M.S.M. ; Zazali, A. ;
Korean Journal of Weed Science, volume 29, issue 3, 2009, Pages 185~193
Dodder (Cuscuta campestris Yuncker) is a problematic weed in abandoned, derelict, open and crop areas in Malaysia. Surveys were conducted in 2008-2009 in the state of Johore, Peninsular Malaysia to assess the extent of spread and distribution of C. campestris, and enlist its host range and damage susceptibility among crop plants and weed species. No less than 12 crop plants and 70 weed species were hosts to C. campestris in about 45,500 ha of crop and non-crop land surveyed in Johore, Peninsular Malaysia. Asystasia gangetica, Mikania micrantha, and Chromolaena odorata were the most common hosts among weed species while dodder was prevalent among cover crops (Calopogonium mucunoides and Pueraria phaseoloides), young tapioca, oil palm, and rubber plants. There were site- and host-mediated differences in the extent of spatio-temporal spread of dodder throughout the areas surveyed, although no significant differences were registered on the extent of spread in the three consecutive surveys at 4-monthly intervals. The areas of spread range from about 0.36
. The dodder populations displayed highly clumped spatial distribution pattern with variance-mean-ratio values ranging from 38.17 for Segamat populations to 123776. 56 for Kota Tinggi equivalents. The parallel figures of Lloyd's patchiness index were 1.19 and 1.38. Leaf disc of weed and crop plants exposed to 1% or more of ethanol extracts of dodder indicated that A. gangetica, Ageratum conyzoides, Cassia alata, M. micrantha, Murdannia nudiflora, Phyllantus niruri, P. urinaria and Saccharum multiflorum were the most susceptible weed species, while Manihot esculenta was among the moderately susceptible crop plant.
Screening of Korean Native Plants with Herbicidal Activity
Kim, Kun-Woo ; Jang, Ho-Jin ;
Korean Journal of Weed Science, volume 29, issue 3, 2009, Pages 194~203
This study was conducted to determine the herbicidal activities of allelochemicals present in Korean native plants. Methanol extracts from 120 samples of 92 plant species in 46 families were tested for the growth inhibition of barnyardgrass (Echinochloa crus-galli) seedling. Extracts of Taxus cuspidata branch, T. cuspidata leaf, Kochia scoparia whole plant, Ranunculus cantoniensis whole plant, Philadelphus schrenkii branch and leaf, Albizia julibrissin leaf, Daphniphyllum macropodum fruit, Kalopanax septemlobus branch and leaf, Eleutherococcus sessiliflorus leaf, Liriope spicata whole plant, Hosta longipes whole plant, Hosta capitata stem and leaf, Erythronium japonicum fruit, Lycoris flavescens bulb, and Lycoris chinensis var. sinuolata bulb showed herbicidal activity over 65% of growth inhibition on the root of barnyardgrass seedlings at 1,000
. Among the above all extracts those of L. flavescens and L. chinensis var. sinuolata bulb very strongly inhibited about 100% and 97.5%, respectively against the root growth of barnyardgrass seedlings at the same concentration.
Study on the Weeds Emergence at the Rice Field Applied Successively with Green Manure
Seong, Ki-Yeong ; Jeon, Weon-Tai ; Cho, Hyeon-Suk ; Kim, Min-Tae ; Kim, Chung-Gek ;
Korean Journal of Weed Science, volume 29, issue 3, 2009, Pages 204~212
Study on weed emergence in the 3 paddy fields, successively applied with green manure for 3, 4 and 7 years, respectively was conducted to investigate the changes in weed emergence. According to the results of this study, 3-year-application of green manure induceed changes in weed emergence, 4-year-application of it caused them in weed community and 7-year-application of it made it necessary to change the conventional weed control method. The emergence of barnyard grass, Echinochloa crus-galli, and common false pimpernel, Lindernia procumbens was increased, weed community was changed. The gross emergence of weeds was increased through applying green manure successively. The emergence of biennial water foxtail, Alopecurus aequalis var. amurensis, was decreased while the number of species of summer annual was increased. In the paddy field applied successively with green manure for 7 years, the leaf number of barnyard grass ranged from 3.6 to 4.2 at about 13 days after transplanting and the population of it, surviving soil-applied herbicide treatment, ranged from 4.3 plants
to 6.1 plants
, and these were estimated to be troublesome enough to cause yield loss.
Bioassay and Quantification of Causative Allelochemicals from the Extracts and Residues of Sweet Potato (Ipomoea batatas) Plant Parts
Chon, Sang-Uk ;
Korean Journal of Weed Science, volume 29, issue 3, 2009, Pages 213~221
Laboratory and greenhouse experiments were conducted to determine the allelopathic potentials of aqueous or methanol extracts and ground residues of sweet potato (Ipomoea batatas cv. 'Sinyulmi') plant parts. leaves, stems, and roots. Aqueous leachates at 40 g dry tissue
) from sweet potato cultivar 'Sinyulmi' showed the highest inhibition against alfalfa (Medicago sativa) regardless of plant part. Alfalfa root growth was significantly inhibited by the methanol extracts of sweet potato as the concentration increased. The inhibitory effect on alfalfa root growth was greater in aqueous and methanol extracts from leaves than stems and roots at higher concentrations. By means of HPLC analysis, methanol extracts from sweet potato leaves had the highest amount of phenolic compounds including mainly chlorognic acid and caffeic acid, and followed by those from stems and roots. Root residues showed the highest inhibition against shoot and root growth of barnyardgrass, compared to leaf and stem residues. Incorporation with root residues of above 50 g
into soil significantly inhibited shoot and root fresh weights of barnyardgrass. These results suggest that sweet potato plants had allelopathic potential, and that their activities were differential depending on plant part as well as extraction method.
The Effects of Legumes as Living Mulches on Weed Control and Plant Traits of Corn (Zea mays L.)
Mohammadi, G.R. ;
Korean Journal of Weed Science, volume 29, issue 3, 2009, Pages 222~228
In order to investigate the effects of interseeding leguminous species as living mulches on weed control and plant traits of corn, a field study was carried out at the Agricultural Research Farm, Razi University, Kermanshah, Iran. The experimental design was a randomized complete block with four replications. The treatments consisted of six leguminous species (Persian clover, Trifolium resupinatum L.; white clover, T. repens L.; berseem clover, T. alexandrinum L.; hairy vetch, Vicia villosa L.; alfalfa, Medicago sativa L. and black alfalfa, M. lupulina L.) and two controls (weeded and un-weeded for all of the growing season). The results indicated that the interseeded living mulches significantly improved the corn plant traits and reduced the weed dry weight produced as compared with full season weedy condition. All of the corn plant traits were substantially lower for full season weedy condition compared to the other treatments. This condition reduced corn yield 48.2% compared to weed free control. Among the interseeded treatments, the highest corn plant traits and the lowest weed dry weight were obtained from the plots interseeded with hairy vetch. Corn yield was increased 79% and weed dry weight was reduced 80.5% when the plots interseeded with hairy vetch as compared with full season weedy condition. Overall, this study confirmed the beneficial effect of the leguminous species as living mulches to efficient weed control and consequently the improvement of corn plant traits. This method would potentially reduce herbicide application and benefit a sustainable weed management program.
Herbicidal Activity of Sorgoleone from Grain Sorghum Root Exudates and Its Contents among Sorghum Cultivars
Uddin, Md Romij ; Kim, Yong-Kyoung ; Park, Sang-Un ; Pyon, Jong-Yeong ;
Korean Journal of Weed Science, volume 29, issue 3, 2009, Pages 229~236
This study was done to evaluate the herbicidal activity of sorgoleone in different weed species and to select cultivars with high sorgoleone contents within a diverse collection of grain sorghum. It was noticed that broadleaf weed species were more susceptible to sorgoleone than grass weed species. Shoot growth of weeds tested was highly inhibited than root growth. Most of the broadleaf weed species showed strong inhibition in their shoot growth by 70-80%. Among those Galium spurium, Amaranthus retroflexus, Rumex japonicus, Oenothera odorata and Chenopodium album were the most susceptible to sorgoleone. Echinochloa crus-galli and Digitaria sanguinalis showed 67% shoot inhibition at 100
sorgoleone. The weed species Aeschynomene indica, Poa annua and Avena fatua were less inhibited in shoot growth by sorgoleone compared to other species. Grain sorghum cultivars varied considerably in the amount of sorgoleone produced. Among 17 different cultivars, three cultivars i.e., Chalsusu, Koburangsusu, and IT 135777 contained 16.5, 10.8, 8.2-fold more sorgoleone in comparison with cultivar Hinsusu.
Predicting the Weed Control Efficacy of Photosynthesis Inhibitors by PPM Method
Zhang, Hong-Jun ; Cui, Hai-Lan ; Ye, Ji-Ming ; Liu, Xue ; Li, Xiang-Jun ; Kempenaar, Corne ; Wei, Shou-Hui ; Ni, Han-Wen ;
Korean Journal of Weed Science, volume 29, issue 3, 2009, Pages 237~242
The experiment was conducted in a greenhouse in Beijing, China, to determine whether weed control efficacy could be predicted based on Plant Photosynthesis Meter (PPM) values measured shortly after the application of photosynthesis inhibitors. The decrease of PPM values of the weed leaves treated with the mixture of atrazine and bentazone could be measured 1 day after treatment (DAT). The decreased extents depended on weed susceptibility and application dosage. There was significant correlation between the PPM values of the treated leaves 1 to 3 DAT and the biomass reduction 14 DAT. The experimental findings indicated that PPM values measured in early days after treatment could give reasonable prediction on weed control. The herbicide usually provided 90% control by weed biomass when PPM value was about 20 and relatively poor control when PPM value over 20.
Differential Herbicide Response of Sulfonylurea-Resistanat Scirpus juncoides Roxb, Accessions to Sulfonylurea Herbicides
Park, Tae-Seon ; Park, Hong-Kyu ; Lee, In-Yong ; Moon, Byung-Chul ; Ku, Bon-Il ; Kang, Chung-Kil ; Kim, Young-Doo ; Ko, Jae-Kwon ;
Korean Journal of Weed Science, volume 29, issue 3, 2009, Pages 243~250
Three sulfonylurea (SU)-resistant Scirpus juncoides Roxb. accessions were tested for levels of resistance to four SU herbicides which have been widely using in paddy fields of Korea since 1990, based on whole plant response and sensitivity of the target enzyme, acetolactate synthase (ALS). Gimje and Naju accessions were not affected to the survival by treatment with recommended doses of all SU herbicides tested. The fresh weight of Gimje and Naju accessions were 95% (ethoxysulfuron) to 109% (bensulfuron-methyl) and 90% (ethoxysulfuron) to 98% (imazosulfuron) to the recommended doses of all SU herbicides tested than the susceptible Suwon accession, respectively. However, the fresh weight for Seosan accession displayed an intermediate response and was only 41% (ethoxysulfuron) to 58% (imazosulfuron) more resistant than the susceptible accession. I∧50 values the ALS for the Gimje and Naju accessions were 283 (prazosulfuron-ethyl)- to 1,074 (bensulfuron-methyl)-fold and 157 (bensulfuron-methyl)- to 870 (prazosulfuron-ethyl)-fold higher to the recommended doses of all SU herbicides tested than the susceptible Suwon accession, respectively. However, the I∧50 value for Seosan accession was 4- to 9-fold more resistant than the susceptible accession, as determined by I∧50 values of ALS. Benzobicyclone SC and bromobutide GR of alternative herbicides tested showed the very high efficacy to S. juncoides seedlings without rice injury.
Alternative Herbicides for Eleocharis acicularis Resistant to Sulfonylurea in Jeonnam, Korea
Kwon, Oh-Do ; Kuk, Yong-In ; Cho, Seong-Hyeon ; Shin, Hae-Ryoung ;
Korean Journal of Weed Science, volume 29, issue 3, 2009, Pages 251~260
The Eleocharis acicularis has been increased in reclaimed paddy fields in Jeonnam, Korea since 2006. These paddy fields were in monoculture rice production using sulfonylurea (SU) herbicides-based mixtures for 6-8 consecutive years. This research was conducted to investigate whether E. acicularis collected in Jeonnam, Korea has resistance to SU herbicides and determine alternative herbicides for the control of resistant E. acicularis by soil-applied herbicides with different application times. The susceptible biotype of E. acicularis was completely controlled with the respective recommended rates and 2 times of the recommended rates of the bensulfuron-methyl and pyrazosulfuron-ethyl regardless of herbicides application times (7 and 14 days after harrowing), but the resistant biotype was only 2.4~16.4% and 40.6~67.1% controlled with the respective recommended rates and 2 times of the recommended rates of the herbicides. The resistant biotype could be controlled by other herbicides having different modes of action from SU herbicides, such as thiobencarb, bromobutide, benzobicyclon, and oxadiazon when they were applied at 0 day after harrowing (DAH) and thiobencarb, bromobutide, benzobicyclon, benfuresate bifenox, and piperophos dimethametryn when they were applied at 8 DAH. On the other hand, benfuresate bifenox, molinate simetryn MCPB, and thiobencarb simetryn when they were applied at 15 DAH gave acceptable control (94.4~98.0%) of the resistant biotype. Our results are the first report of E. acicularis resistant to SU herbicides to in Korea, and thus further works are required to investigate resistance mechanism.
Study of Folklore with Language to Korean Weed Name
Lee, In-Yong ; Kim, Chang-Seog ; Moon, Beong-Chul ; Oh, Se-Mun ; Park, Jae-Eup ;
Korean Journal of Weed Science, volume 29, issue 3, 2009, Pages 261~267
We selected 638 weed species in the weed glossary book published by the Korean Society of Weed Science and linguistically studied them after categorizing them into different sizes, shapes, seasons, and associated animals insects, truths and lies, areas, colors, persons. Similarities and relation with the five senses was also part of the categorization. The prefixes for size are narrow and/or small, long, small, little and/or bit, big, large and long. The prefixes for shape are thorn and/or needle, crawling/prostate, round and/or circular, stand, creases and/or folds and/or wrinkled and hairy. Some Korean weeds have names that personify animals such as dogs, cats, cows, rats and/or insects. Chambangdongsani (Cyperus iria) and Chamsorijaengi (Rumex japonicus) etc. are weeds that contain 'real' which means 'truths' and Gaegatnaengi (Rorippa indica), Gaegijang (Panicum bisulcatum) are weeds that contain 'false' which means 'lies' or 'low qualities'. Some weeds contain the prefix 'tideland' which means reclaimed land among areas, plain or water which relates to water or waterside. Other troublesome exotic weeds have prefixes for U.S.A., western and/or Europe. Some weed names contain the appearance of the weed or the unique color of the flower such as yellow, red, purple, violet, and/or white. Among the weed, some weed names were personified as humans or degraded. Clown, Gisaeng, dwarf, fool are the human related subjects and designations as daughter-in-law. Then, some weeds contain the words 'me too' or 'you too' based on similarity.