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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 31, Issue 4 - Dec 2011
Volume 31, Issue 3 - Sep 2011
Volume 31, Issue 2 - Jun 2011
Volume 31, Issue 1 - Mar 2011
Selecting the target year
Weeding Hypothesis on Direct Seeding Rice Field as Applied by the Old Firing and Water Dressing Method
Guh, Ja-Ock ; Kuk, Yong-In ;
Korean Journal of Weed Science, volume 31, issue 1, 2011, Pages 1~7
DOI : 10.5660/KJWS.2011.31.1.001
It was a method of weed removing, called as whagyeongsoonoobeob. Namely, the Hwanoobeob was the weeding method came from "Jeminyosool" in old China, and had been descended to "Wibinmyeongnonggi", "Nonggajibseong" and "Gwanongsocho" in the
century of our country. The method was applied to rice paddy after applying direct-seeding, burning by unit before watering to remove weeds and to save rice plants. It would be applied with a method of using non-selective herbicide such as paraquat and oxyfluorfen, or radiation treatment, as a simple and safe weed removing method.
Trend and Perspective of Weed Control Techniques in Organic Farming
Ock, Hwan-Suck ; Pyon, Jong-Yeong ;
Korean Journal of Weed Science, volume 31, issue 1, 2011, Pages 8~23
DOI : 10.5660/KJWS.2011.31.1.008
Weeds are one of the major constraints to crop production in organic farming systems. This paper reviews major results and techniques achieved with physical, cultural, and biological weed control and their perspectives in organic agriculture. Physical methods includes mechanical, thermal, lighting, electrocution, pneumatic, autonomous robot weeding control techniques. Cultural weed control methods includes mulching, tillage, crop rotation, cover crops and crop competition. Physical and cultural weed control techniques are especially important in organic farming crops where other weed control options are limited or not available without use of herbicides. Biological weed control includes mycoherbicides, innundative biological control, broad-spectrum biological control and allelopathy. Successful weed management in organic farming requires well managed integrated systems of mechanical control using newly developed machines, cultural control and biological control methods. Weed management decision-aid models may also needed to develop to provide greater assurance of achieving profitability and appropriate long-term weed management in organic farming in the future.
Bioinvasion and Distribution Pattern of Verbesina alternifolia in Korea
Kil, Ji-Hyon ; Lee, Chang-Woo ; Kim, Young-Ha ; Kim, Jong-Min ; Hwang, Sun-Min ;
Korean Journal of Weed Science, volume 31, issue 1, 2011, Pages 24~33
DOI : 10.5660/KJWS.2011.31.1.024
Wingstem, Verbesina alternifolia of North America origin, was introduced in 1981 into the Korea terrestrial ecosystem. It scattered in a number of places with limited population size in most cases. Its population has spread into the forest at the Chiaksan National Park and occupied the natural vegetation. Distributions of wingstem were the most popular along the 12 road sites, especially in Route 453, Seohwa-myeon, Inje-gun, Gangwon-do and in Route 31, Yeongyang-gun, Gyeongsangbuk-do with 60% coverage of wingstem. It was also distributed in the 5 forest sites and 5 riversides. Despite of its attractive yellow flower, it is recommended to limit cultivation in the nature reserve or other ecosystem of conservation value.
Change of Weed Community in No-till Corn with Legume Cover Crops as Living Mulch
Choi, Bong-Su ; Kim, Chung-Guk ; Seong, Ki-Yeong ; Song, Duk-Young ; Jeon, Weon-Tai ; Cho, Hyun-Suk ; Jeong, Kwang-Ho ; Kang, Ui-Gum ;
Korean Journal of Weed Science, volume 31, issue 1, 2011, Pages 34~40
DOI : 10.5660/KJWS.2011.31.1.034
Cover crop can be used to suppress weeds by competition for light and nutrient. Objective of this study was to evaluate the effectiveness of legume cover crops on change of weed community in no-till corn cultivation. Two legume cover crops, hairy vetch and crimson clover were grown in the field, and succeeding corn was sown on 4 May, 2010. The distribution of weed was surveyed at 15 April, 1 June, and 20 August. At 15 April, the weed biomass in hairy vetch field was higher than in crimson clover field. The dominant weeds were Capsella bursa-pastoris L. and Stellaria aquatica L. in hairy vetch and crimson clover fields, respectively. At vegetative stage of corn, occurred weeds in hairy vetch and crimson clover fields were four and six species, respectively, while the weed was occurred with nine species in conventional. Also the dry weight of weed was decreased by 82 and 75% in hairy vetch and crimson clover fields compared to conventional. On the other hand, after harvest of corn, occurred weed in hairy vetch, crimson clover and conventional was five, four and five species, respectively. Dry weight percentage of occurred weed in conventional was 23.5%, and the value was higher than 13.8 and 14.7% in hairy vetch and crimson clover fields, respectively. Stellaria aquatica L. as winter annual weed only occurred in cover crop field during corn growing season. It is these possibilities that low soil temperature and light interception by soil cover of legume cover crop.
Yearly Variation of Ecological Traits of Weed Flora on Soils Having Different Drainage Property
Hwang, Jae-Bok ; Yun, Eul-Soo ; Jung, Ki-Youl ; Park, Chang-Young ; Choi, Young-Dae ; Lee, Yong-Hwan ; Nam, Min-Hee ;
Korean Journal of Weed Science, volume 31, issue 1, 2011, Pages 41~48
DOI : 10.5660/KJWS.2011.31.1.041
This survey of weed population by different soil moisture with paddy-upland rotation was conducted to investigate information on weed flora and its ecology between two years. Weed species were assessed in April : 2009, 2010. Soil samples were taken from each study plot to assess the impact soil moisture on the occurrence and abundance of dominance weed species. Soil water of poorly drained field ranged from 10.2~18.2% more than 11.8~14.3% of somewhat poorly drained field. Weeds of fields composed of 19 species belonging to 12 families. Among 12 families, 6 weed species belonged to Compositae (31.6%) were the biggest family, Cruciferae were 2 species (10.5%), and Rubiaceae were 2 species (10.5%), respectively. Youngia japonica had the highest summed dominance ratio(SDR) (97.0%) and followed by Conyza canadensis (92.1%), Galium spurium (35.3%) and Hemistepta lyrata (28.4%) of somewhat poorly drainage in 2009. Artemisia princeps the highest SDR (100%) and followed by Stellaria alsine(55.2%), Y. japonica (38.3%) and Nasturtium officinale (28.5%) of poorly drainage in 2009. And, Stellaria alsine had the highest SDR (86.8%) and followed by Alopecurus aequalis (77.7%), Astragalus sinicus (68.7%) and Y. japonica (46.3%) of somewhat poorly drainage in 2010. S. alsine the highest SDR (93.7%) and followed by A. aequalis (78.6%), Nasturtium officinale (31.3%) and Y. japonica (30.4%) of poorly drainage in 2010. Simpson's index was calculated to 0.12~0.23, which showed that weed occurrence with different soil moisture in paddy-upland rotation and between years was various. Similarity coefficient between years was 43.0% (2009) and 74.2% (2010), which indicate a low diversity because of the moisture in the agro-ecosystem.
Herbal Flora and Succession of Stream Under Management Conditions After its Restoration - Case Study of Yangjaecheon in Seoul -
Lee, Yong-Ho ; Kang, Byeung-Hoa ; Na, Chae-Sun ; Yang, Geum-Yeol ; Min, Tai-Gi ; Hong, Sun-Hee ;
Korean Journal of Weed Science, volume 31, issue 1, 2011, Pages 49~70
DOI : 10.5660/KJWS.2011.31.1.049
This study was conducted to examine the change of flora and plant species diversity between 2005 and 2010 in Yangjaecheon (stream) which was divided among three different types of vegetation management method; ecological vegetation management (weeding vines and invasive plants; EVM), plant cultivation (PC) and uncared for vegetation (UC). There were total 478 taxa, composed by 429 spontaneous taxa and 49 cultivated taxa in 2005 and total 424 taxa composed by 318 spontaneous taxa and 106 cultivated taxa in 2010. In spontaneous plants, 201 taxa were distributed over total area, 197 taxa were distributed in only EVM area, 10 taxa in only PC area and 59 taxa in only UC area. Also, the most dominant family (Asteraceae
Poaceae) and number of rare taxa (reduced) and wide distributed taxa (increased) was changed from 2005 to 2010. The rate of perennial taxa was found to be increased in only EVM area. In conclusion, EVM is thought to be a more efficient method for plant species diversity of restored stream.
Competitiveness and Yield Loss of Red Pepper by Densities of Echinochloa crus-galli (L.) P. Beauv. and Chenopodium album L.
Won, Jong-Gun ; Jang, Kil-Su ; Hwang, Ji-Eun ; Kwon, Oh-Hun ; Jeon, Su-Gyung ; Park, Sang-Gu ;
Korean Journal of Weed Science, volume 31, issue 1, 2011, Pages 71~77
DOI : 10.5660/KJWS.2011.31.1.071
This study was conducted to predict the yield loss of red pepper and to determine the economic weed thresholds levels for red pepper cultivation field from competition with the most serious weeds, Echinochlor crus-galli (L.) P. beauv. (barnyard grass) and Chenopodium album L. (goosefoot) in Youngyang of Korea. Crop yield as a function of weed density was predicted by using a rectangular hyperbola, and their economic threshold levels were determined by using the equation developed by Cousens (1987). The red pepper yield loss models of weeds were predicted as y=317.0 kg/ (1+0.1707x),
=0.895 in E. crus-galli and y=323.2 kg/(1+0.2900x),
=0.896 in C. album L.. Economic thresholds calculated using Cousens' equation was negatively related with the competitiveness of weed. Economic thresholds of each weed were calculated as 6.5 plant
in E. crus-galli, and 3.7 plant
in C. album L..
Effects of Storage Period and Germination Condition on Germination Rate of Vicia tetrasperma and V. hirsuta
Cho, Jung-Lai ; Choi, Hyun-Sug ; Lee, Youn ; Kim, Chang-Seok ; Lee, In-Yong ;
Korean Journal of Weed Science, volume 31, issue 1, 2011, Pages 78~83
DOI : 10.5660/KJWS.2011.31.1.078
This study was conducted to evaluate germination rate of Vicia tetrasperma and V. hirsuta as affected by storage duration, temperature, and light. All seeds of both species were gathered from Dangjin, Chungnam in the late June of 2004 and 2005, stored for a certain period of time, and then exposed for 20 days to the alternating temperatures (
) for evaluating the germination rate. Both 2004 and 2005, two species stored at room temperature for 3 months had germination rates less then 30% with applying various alternating temperatures for 20 days although the highest germination rate was obtained with
treatment. V. tetrasperma at 12 month storage after seed gathering in 2005 had 82% of germination rate with
treatment and showed the increased rate as time passed. V. hirsuta at 6, 9, and 12 month storage after seed gathering in 2005 ranged, however, from 33 to 53% of the germination rate at alternating temperature treatments for 20 days and did not seem to be affected by the elapsed time of the storage. Storage at room temperature was more effective for increasing germination rate of both species compared to those of the storage at low temperature. The germination rate of both species was not significantly affected by either exposure of light or short period of high temperature.
Growth of Vicia tetrasperma and V. hirsuta as Affected by Seeding Condition and Estimated N Production
Cho, Jung-Lai ; Choi, Hyun-Sug ; Lee, Youn ; Kim, Chang-Seok ; Lee, In-Yong ;
Korean Journal of Weed Science, volume 31, issue 1, 2011, Pages 84~88
DOI : 10.5660/KJWS.2011.31.1.084
This study was established to investigate the effects of seeding depth and seeding time on the emergence, growth, and N production of Vicia tetrasperma and V. hirsuta in 2007 and 2008. All seeds of both species were gathered from Dangjin, Chungnam in late June of 2005 and stored for two year at room temperature. Both V. species began to germinate at the end of June, passed the winter with the seedling stage, rapidly increased their height in April and May, were in full bloom in May, and then withered after entering mid-June. V. hirsuta had higher emergence rate and growth compared to those of V. tetrasperma. The optimum seeding time and seeding depth for a cover cropping was from late August to early September and from 1 to 5 cm, respectively. V. tetrasperma and V. hirsuta had a satisfactory growth and provided 43.8 and
of N, respectively.
Aspect of Weed Occurrence by Methods of Weed Control in Rice Field
Kim, Yoon-Ha ; Kang, Sang-Mo ; Khan, Abdul Latif ; Lee, Joon-Hee ; Lee, In-Jung ;
Korean Journal of Weed Science, volume 31, issue 1, 2011, Pages 89~95
DOI : 10.5660/KJWS.2011.31.1.089
In present study we focused on the weed occurrence and diversity in rice field according to methods of weed control. Experiments comprised of no herbicide treatment (NHT), herbicide treatment (HT) and golden apple snail treatment (GAST) within the three months (July to September) of growing rice. According to results, five to seven different weed species were found in NHT, while two to four different weed species were found in HT and GAST. Monochoria vaginalis was dominant species during growing period in NHT and HT while Lemna paucicostata was the dominant in July but Persicaria hydropiper was dominant for August and September. Simpson's dominance index was highest in GAST(0.96) compared with other treatments (NHT 0.27 and HT : 0.51). The similarity coefficient was 50.31%, 4.65% and 0.38% for NHT versus HT, NHT versus GAST and HT versus GAST, respectively. In conclusion, the weed species diversity, dominance and similarity coefficient were varied in different weed control methods of rice growing.
Herbicidal Activity of Essential Oil from Palmarosa (Cymbopogon martini)
Hong, Su-Young ; Choi, Jung-Sup ; Kim, Song-Mun ;
Korean Journal of Weed Science, volume 31, issue 1, 2011, Pages 96~102
DOI : 10.5660/KJWS.2011.31.1.096
The objective of this study was to find herbicidal compounds in the essential oil of palmarosa (Cymbopogon martini). Of essential oils from basil (Ocimum basilicum), blackpepper (Piper nigrum), clary sage (Salvia sclarea), ginger (Zingiber pfficinale), hyssop (Hyssopus officinalis), nutmag (Myristica fragrance), palmarosa (Cymbopogon martini), fennel (Foeniculum vulgare), sage (Salvia leucantha), and spearmint (Mentha spicta), the herbicidal activity of palmarosa essential oil, which was determined by a seed bioassay using rapeseed (Brassica napus L.), was highest (
). In palmarosa essential oil, 11 volatile organic chemicals were identified by gas chromatography-mass spectometry with solid-phase micro-extraction apparatus and the major constituents were geraniol (40.23%), geraniol acetate (15.57%), cis-ocimene (10.79%), and beta-caryophyllene (8.72%). The
values of geraniol, citral, nerol, and geranyl acetate were 151, 224, 452, and
, respectively. In greenhouse and field experiments, foliar application of palmarosa essential oil at the level of
controlled weeds effectively. Overall results of this study showed that the herbicidal activity of palmarosa essential oil could be due to geraniol and citral which had lower
Life Cycle and Host Specificity of Tanysphyrus (Tanysphyroides) major Roelofs (Coleoptera : Curculionidae), a Possible Candidate Agent for the Biological Control of Monochoria vaginalis var. plantaginea
Park, Jin-Young ; Park, Jae-Eup ; Lee, In-Yong ; Kwon, Oh-Seok ; Park, Jong-Kyun ;
Korean Journal of Weed Science, volume 31, issue 1, 2011, Pages 103~111
DOI : 10.5660/KJWS.2011.31.1.103
Monochoria vaginalis var. plantaginea (Pontederiaceae) is one of the most problematic weed in the rice field in Korea. Tanysphyrus (Tanysphyroides) major was selected as a potential biological control agent for M. vaginalis. Continuous rearing of T. (T.) major was carried out from 2006 to 2007, and its morphological characteristics and ecological characteristics were investigated. This species has a single generation per year, over-wintering as an adult stage. The emergence of adults starts in later June and last until September. These observations indicate that T. (T.) major takes
days to develop from egg to adulthood. Host specificity test showed that finally selected this species was suitable candidates for the biological control of M. vaginalis var. plantaginea since it showed negative host specificity against major 60 test crops.
Herbicidal Activity of Natural Compound Chrysophanic Acid Under the Greenhouse Condition
Kang, Chung-Kil ; Lee, Sang-Beom ; Lee, Byung-Mo ; Nam, Hong-Sik ; Lee, Yong-Ki ; Jee, Hyeong-Jin ; Hong, Moo-Ki ; Rho, Yeong-Deok ; Choi, Jung-Sup ;
Korean Journal of Weed Science, volume 31, issue 1, 2011, Pages 112~117
DOI : 10.5660/KJWS.2011.31.1.112
A series of experiments was conducted to investigate the herbicidal activity of natural compound chrysophanic acid under the greenhouse condition in 16 weed species. Chrysophanic acid showed non-selective herbicidal activity. While chrysophanic acid exhibited severe injury by foliar treatment, little or no injury was found by the soil treatment. Among the tested weeds, the most effective activity was found in grass and broad leaf weeds, a lower significant difference in herbicidal activity was found in sedge. At early post-emergence, weeds appeared to be very susceptible to chrysophanic acid with
. The higher the natural compound concentrations, the lower weed growth. At middle post-emergence, weeds appeared to be very effective to chrysophanic acid with