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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 27, Issue 4 - Dec 2007
Volume 27, Issue 3 - Sep 2007
Volume 27, Issue 2 - Jun 2007
Volume 27, Issue 1 - Mar 2007
Selecting the target year
Characteristics of Weed Flora in Arable Land of Korea
Lee, In-Yong ; Park, Jae-Eup ; Kim, Chang-Seog ; Oh, Se-Mun ; Chung-Kil Kang ; Park, Tae-Seon ; Cho, Jeong-Rae ; Moon, Byeong-Chul ; Kwon, Oh-Seok ; Kim, Kwang-Ho ; Lim, Soon-Taek ; Park, Jong-Hyun ; Song, Duk-Yong ; Seong, Ki-Yeong ; Im, Il-Bin ; Kang, Jong-Gook ; Kim, Sun ; Ku, Yeun-Chung ; Hwang, Jae-Bok ; Song, Suk-Bo ; Park, Nam-Il ; Ji, Seung-Hwan ; Kang, Dae-Sung ; Chung, Kyung-Im ;
Korean Journal of Weed Science, volume 27, issue 1, 2007, Pages 1~21
This study was conducted to determine the effective herbicides and methods to controlAneiIema keisak Hassk. in paddy fields. Dormancy of seeds of A. keisak broken the most part onthe storage over 80 days in water with low temperature (5"C). Germination period seeds of A. keisakbroken dormancy took 9, 6, 5, 3 days respectively on 10, 15, 20 and 25 "C. Penoxsulam andcmosulfuron among ALS inhibiting herbicides applied from first to sixth leaf growth stage of A.keisak had controlling effects of 90 percent to fourth and sixth leaf growth stage respectively.Non-sulfonylurea herbicides, such as butachlor, Pretilachlor, thiobencarb, esprocarb, mefenacet andpyrazolate applied to fourth leaf stage times of A. keisak had controlling effects of 90 percent. Theapplication of thiobencarb+simetryn, Pyrazolate+butachlor, Pyrazosulfuron-ethyl+molinate+simetrynand pyrazosulfuron-ethyl+pyrazolate+simetryn controlled to sixth leaf stage times of A. keisak. Thefoliar application of bentazone+MCPA, Pribenzoxim and bispyribac-sodium controlled effectively A.keisak on 33 days after emergence. These results suggest that reasonable herbicides are selectedaccording to timing control of A. keisak and rice cultivation.
Control and Occurrence of Aneilema keisak Hassk. in Paddy Field
Im, Il-Bin ; Kim, Sun ; Kang, Jong-Gook ;
Korean Journal of Weed Science, volume 27, issue 1, 2007, Pages 22~28
This study was conducted to determine the effective herbicides and methods to control Aneilema keisak Hassk. in paddy fields. Dormancy of seeds of A. keisak broken the most part on the storage over 80 days in water with low temperature (5 ). Germination period seeds of A. keisak broken dormancy took 9, 6, 5, 3 days respectively on 10, 15, 20 and 25 . Penoxsulam and cinosulfuron among ALS inhibiting herbicides applied from first to sixth leaf growth stage of A. keisak had controlling effects of 90 percent to fourth and sixth leaf growth stage respectively. Non-sulfonylurea herbicides, such as butachlor, pretilachlor, thiobencarb, esprocarb, mefenacet and pyrazolate applied to fourth leaf stage times of A. keisak had controlling effects of 90 percent. The application of thiobencarb+simetryn, pyrazolate+butachlor, pyrazosulfuron-ethyl+molinate+simetryn and pyrazosulfuron-ethyl+pyrazolate+simetryn controlled to sixth leaf stage times of A. keisak. The foliar application of bentazone+MCPA, pribenzoxim and bispyribac-sodium controlled effectively A. keisak on 33 days after emergence. These results suggest that reasonable herbicides are selected according to timing control of A. keisak and rice cultivation.
Survey of Herbicide Resistant Oilseed Rapes around the Basin of Rivers in Incheon Harbor Area
Lee, Bum-Kyu ; Kim, Chang-Gi ; Park, Ji-Young ; Yi, Hoon-Bok ; Park, Kee-Woong ; Jeong, Soon-Chun ; Yoon, Won-Kee ; An, Ju-Hee ; Cho, Kang-Hyun ; Kim, Hwan-Mook ;
Korean Journal of Weed Science, volume 27, issue 1, 2007, Pages 29~35
Genetic contaminations caused by increased import of genetically modified organism (GMO) are of concern in our ecosystem. This study was conducted to investigate the intentional or unintentional release of three herbicide resistant oilseed rape events, RT73, T45 and MS8/RF3, which have already been approved for their consumption in Korea in 2005, around the basin of rivers in Incheon harbor area. Seven sites in Seunggi-river and one site in Kajwa-river were investigated for the possible genetic contamination and release of GM oilseed rapes in April 2006. Gene specific primers for CP4EPSPS, 35S promoter and nos terminator genes were designed to detect herbicide resistant oilseed rape events. Based on the PCR analysis, any GM oilseed rape was not discovered in the surveyed area. Since the GTS40-3-2 soybean contains CP4EPSPS, 35S promoter and nos terminator genes, it was compatibly used for detecting the three oilseed rape events as positive controls in the PCR analysis. The gene flows from GM oilseed rape to its relatives, leaf mustard or Chinese cabbage were not occurred in the surveyed areas. This study also suggested that the rubisco small subunit primer was compatible for leaf mustard and Chinese cabbage in the PCR analysis as a positive control.
Characteristics on Emergence and Early Growth of Burcucumber(Sicyos angulatus)
Moon, Byeong-Chul ; Park, Tae-Seon ; Cho, Jeong-Rae ; Oh, Se-Mun ; Lee, In-Yong ; Kang, Chung-Kil ; Kuk, Yong-In ;
Korean Journal of Weed Science, volume 27, issue 1, 2007, Pages 36~40
This experiment was conducted to determine the periodicity of emergence and growth of burcucumber (Sicyos angulatus). Burcucumber seeds collected just after passing winter showed the low emergence of 2-5% at 150 days after seeding on the surface of the soil on March 3. Burcucumber was germinated constantly throughout the growing season in natural upland condition. Cumulative occurrence rate of burcucumber in natural upland condition was predicted as 90% by August 13. Growth of burcucumber was slow until early June but was fast after the middle of June. Based on regression equation predicting leaf development, about 2 days for first leaf and 16 days for 7 th leaf stages were required.
DNA Sequence Characterization of the Acetolactate Svnthase(ALS) of Sulfonvlurea(SU) - Resistant and - Susceptible Monochoria vaginalis
Park, Tae-Seon ; Kang, Sun-Young ; Heu, Sung-Ki ; Kim, Tae-Wan ;
Korean Journal of Weed Science, volume 27, issue 1, 2007, Pages 41~48
This study was conducted to charactering the acetolactate synthase (Ec 126.96.36.199; ALS) gene which was obtained from sulfonylureas (SUs)-susceptible (S) and resistant (R) Monochoria vaginalis. The 408 bp fragment of the genomic DNA sequence coding for acetolactate synthase (ALS) of S and R biotypes of M. vaginalis were cloned and sequenced. Fifteen clones obtained from R biotypes of M. vaginalis were divided into four groups as result of sequencing. The first group was not difference compared with ALS gene of S biotype, the second group was changed with the use of P197S, the third group was closely observed and greatly other part of six places than group 1, and the fourth group appeared that difference of intergrade of 1 and 3 is seen. Therefore, it could be assumed that ALS gene of M. vaginalis confirming in Korea also has several genes. And the peptide of the 13 amino acids in Domain A region for ALS genes from R biotype of M. vaginalis differed from those of the S biotype by one base substitution at Pro codon of Domain A, predicting a Pro in the R biotype. It could also be confirmed that change of Pro -197 parts occurred in all of R biotype plants.
Residue Patterns of Butachlor and Pyrazosulfuron-ethyl in Soil, Water and Products of Transplanted Rice Paddy Field
Park, Nam-Il ; Park, Jong-Hyun ; Lim, Taeg-Kyeong ; Chun, Jae-Chul ; Kim, Kang-Ho ; Park, Jae-Eup ; Lee, In-Yong ;
Korean Journal of Weed Science, volume 27, issue 1, 2007, Pages 49~55
This study conducted to the safety measures of the butachlor and pyrazosulfuron-ethyl compound is performed for the control annual and perennial weeds in the paddy field. The soil residue of butachlor showed 0.72ppm in recommended dosage 1 day after treatment (DAT), and 1.673ppm in 2-times dosage. However, the residue can not be traced at harvest time which is 122 DAT. The water residue of butachlor showed none at 1 DAT, whereas it showed 0.0217ppm at 3 DAT in 2-times dosage. The 2-times dosage, however, did not show any residue 7 DAT. It is suggested that safety of the herbicides, because the residue in both the rice straw and hulled rice to be none in the butachlor treatment after 122 days of application. The soil residue of pyrazosulfuron- ethyl showed the maximum concentration of 0.009ppm and 0.018ppm in recommended and 2-times dosage, respectively. They showed none at 14 days and 21 days after the treatment. The water residue of pyrazosulfuron-ethyl showed 0.009ppm and 0.014ppm in recommended and 2-times dosage, respectively. They all showed none at 14 DAT. Also, the residue in both the rice straw and hulled rice to be none in the pyrazosulfuron-ethyl treatment after 122 days of application.
Weed Population Distribution and Change of Dominant Weed Species in Paddy Field of Gyeonggi Region
Park, Jung-Soo ; Kim, Hee-Dong ; Han, Sang-Wook ; Lee, Jae-Hong ; Jang, Jung-Hee ;
Korean Journal of Weed Science, volume 27, issue 1, 2007, Pages 56~65
The survey of weed occurrence in paddy field was carried out to investigate the dominance of weed species and weed occurrence on 330 fields of Gyeonggi Region in 2005. Weed occurrence examined based on weed dry weight per ㎡ decreased to 2.83g in 2005 from 3.06g in 2000, 5.95g in 1995 and 19.32g in 1991. Occurrence ratio of annual weeds to perennial weeds was changed to 45.2：54.8% in 2005 from 49.7：50.3% in 2000.The weed species observed include 3 species of grasses, 4 species of sedges, and 10 species of broadleaf and other weeds. The most dominant weed species was Eleocharis kuroguwai, followed by Echinochloa crus-galli, Sagittaria trifolia, Bidens tripartita, Monochoria vaginalis and Aeschynomene indica. Weed species that showed the similar dominance value compared to the survey performed in 2000 were E. kuroguwai and S. trifolia, but occurence of M. vaginalis and B. tripartita increased, and occurence of E. crus-galli decreased. Donimant weed species in normal paddy soil and wet paddy soil was E. kuroguwai, in poorly drained soil was E. crus-galli and in saline soil was S. planiculmis. In the analysis of weed occurrence by transplanting time, E. kuroguwai, S. trifolia and E. crus-galli were the most dominant weed species at mid to late May transplanting, and E. kuroguwai, S. planiculmis and S. trifolia at early June transplanting. Herbicide application time per year did not differ from that in 2000. However the punctual application of herbicide increased to 86% from 77% in 2000.
Effect of Water-Saving Irrigations on Occurrence of Weed and Yield of Rice in Rice Paddy Fields
Kwon, Oh-Do ; Kuk, Yong-In ;
Korean Journal of Weed Science, volume 27, issue 1, 2007, Pages 66~76
This study was carried out to find the best irrigation method on saving of agricultural water throughout a study on occurrence of weed, controlling efficacy on weeds, and yield of rice by using different irrigation methods in rice paddy fields. Leaf age at 15 days after transplanting was not different among irrigation methods, but the progressing of leaf age was quicker in a perennial weed, arrowhead and an annual weed, Monochoria vaginailis than in other weeds. The numbers of weed occurrence and the dry weight of weeds at 15 days after transplanting were 177 to 227g m-2 and 5.64 to 6.80g m-2 by different irrigation methods, respectively. The dry weight of weeds at 50 days after transplanting and 10 days after heading was lower in D.I. and was higher in SW2 than in ST.I with or without an herbicide application. However, controlling efficacy on weeds was over 91% regardless of irrigation methods. Rice yield in D.I. of with or without an herbicide application, was reduced by 8% and 4%, respectively, compared to ST.I. And rice yield in SW2 was reduced by 2% and 10%, respectively compared to ST.I. The yield of rice in other irrigation methods such as SW1 and SW3 was similar with that of ST.I. The weed occurrence, controlling efficacy, and rice yield were similar between SW1 and ST.I. Thus, SW1 is the best irrigation method in rice culture because of saving water.
Effects of Soil Acidification on Antioxidants ;and Antioxidative Enzymes in Garden Balsam (Impatiens balsamina L.)
Kim, Jeung-Bea ; Kim, Hak-Yoon ;
Korean Journal of Weed Science, volume 27, issue 1, 2007, Pages 77~83
To investigate the effects of soil acidification on the level of antioxidants and antioxidative enzyme activity of plants, seedlings of garden balsam (Impatiens balsamina L.) was transplanted into the soils acidified with H2SO4 solutions (pH 5.4, 4.7, 4.0, 3.6). The concentrations of Ca, Mg, K, Al, and Mn in the acidified soils were increased with increasing amount of H＋ added to the soil. The level of malondialdehyde was significantly increased by soil acidification. As the pH levels decreased from 5.4 to 3.6, the contents of dehydroascorbate and oxidized glutathione of the plant were significantly increased. The antioxidative enzyme activities of the plant affected by soil acidification were increased as the pH decreased. The results indicate that garden balsam may receive oxidative stresses by soil acidification and that a biochemical protective mechanism might be activated to nullify the oxidative stresses generated through soil acidification.