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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
The Korean Journal of Pesticide Science
Journal Basic Information
Journal DOI :
The Korean Society of Pesticide Science
Editor in Chief :
Volume & Issues
Volume 10, Issue 4 - Dec 2006
Volume 10, Issue 3 - Sep 2006
Volume 10, Issue 2 - Jun 2006
Volume 10, Issue 1 - Mar 2006
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A Solid Phase Synthesis of Dihydro-1,4-dioxin and Dihydro-1,4-oxathiin Carboxanilides Using Polymer-bound Oxime Ester
Hahn, Hoh-Gyu ; Bae, Su-Yeal ; Nam, Kee-Dal ;
The Korean Journal of Pesticide Science, volume 10, issue 1, 2006, Pages 1~6
A methodology for the syntheses of carboxanilides using solid support of 4-chloro-3-nitorbenzophenone oxime resin 5 was developed. Condensation of 4-chloro-3-nitorbenzophenone resin 6 with hydroxylamine hydrochloride salt gave oxime resin 5. The reaction of oxime resin 5 with dioxin and oxathiin derivatives 7a-d afforded the corresponding polymer-bound dioxin and oxathiin derivatives 9a-d. These polymer-bound resins 9a-d were treated respectively with aniline in the presence of acetic acid resulted in the corresponding dioxin carboxanilides 10a-d (yield, 5%-quantitative).
Comparative Molecular Similarity Indices Analyses (CoMSIA) on the Herbiridal Activities of New 5-benzofuryl-2-[1-(alkoxy-imino)alkyl]-3-hydroxycyclo-hex-2-en-1-one Derivatives
Sung, Nack-Do ; Jung, Ki-Sung ; Jung, Hoon-Sung ; Chung, Young-Ho ;
The Korean Journal of Pesticide Science, volume 10, issue 1, 2006, Pages 7~14
Three-dimensional quantitative structure-activity relationships (3D-QSARs) on the herbicidal activities against in-vitro pre-emergence rice plant (Oryza sativa L.) and barnyard grass (Echinochloa crus-galli) by new 5-benzofuryl-2-[1-(alkoxyimino)alkyl]-3-hydroxycyclohex-2-en-1-one derivatives were studied quantitatively using comparative molecular similarity indices analysis (CoMSIA) methodology. The optimized CoMSIA model(A5:
) for rice plant exhibited a good correlation with steric (31.6%) and hydrophobic (39.7%) factors of the substrate molecules, and the model (B4:
) for barnyardgrass exhibited a good correlation with electrostatic (46.7%) and H-bond acceptor field (30.8%), respectively. The predicted
substituent (Rice plant:
) by the model (B4) not only exhibited to the highest herbicidal activity against barnyardgrass, but also exhibited to the highest selecticity between two plants.
Monitoring of pesticide residues in peppers from farmgate and pepper powder from wholesale market in Chungbuk area and their risk assessment
Kim, Kwang-Ill ; Kim, Heung-Tae ; Kyung, Kee-Sung ; Jin, Chung-Woo ; Jeong, Chan-Hee ; Ahn, Myung-Soo ; Sim, Seok-Won ; Yun, Sang-Soon ; Kim, Yun-Jeong ; Lee, Kwang-Goo ; Lee, Kee-Doo ; Lee, Won-Jae ; Lim, Jeong-Bin ;
The Korean Journal of Pesticide Science, volume 10, issue 1, 2006, Pages 15~21
In order to monitor the pesticide residues in/on peppers and pepper powder and to assess their risk, pesticides in/on green pepper from 10 farmgates and fresh red pepper from 9 farmgates in Chungbuk area and pepper powder from 6 wholesale markets in Cheongju city were analyzed with a GLC and an HPLC. Also, pepper powder made by pulverization of the dried red pepper was analyzed to elucidate the change of pesticide residues in fresh red pepper by oven-drying. The number of pesticides detected from peen pepper, fresh red pepper, dried red pepper and pepper powder were 9, 12, 12, and 17, respectively, including 10 pesticides (one fungicide and nine insecticides) which were exceeded the maximum residue limits (MRLs). The exceeding rate of the MRL were higher in dried red pepper and pepper powder than in green pepper and fresh red pepper. Although some pesticides in peppers and pepper powder exceeded the MRLs, their estimated daily intake(EDI) were less than 1.6% of their acceptable daily intakes(ADIs), suggesting that it would be estimated to safe. By oven-drying of fresh red pepper at
for 72 hours, the weight of dried red pepper was from 1/5.9 from 1/7.8 of fresh red pepper, while the concentration of pesticide residue in dried red pepper increased from 1.7 to 8.2 times, suggesting that further reconsideration was required for the MRL of pepper powder.
Study on Reduction Factors of Residual Pesticides in Processing of Ginseng(I)
In, Moo-Hyeog ; Kwon, Kwang-Il ; Park, Kun-Sang ; Choi, Dong-Mi ; Chang, Moon-Ik ; Jeong, Ji-Yoon ; Lee, Kyung-Jin ; Yun, Won-Kap ; Hong, Moo-Ki ; Woo, Gun-Jo ;
The Korean Journal of Pesticide Science, volume 10, issue 1, 2006, Pages 22~27
The aim of this study was to establish the maximum residue limits(MRLs) of fenhexamid, azoxystrobin and cyprodinil pesticides in ginseng products. The pesticides were applied to the cultivation field of ginseng, and they were harvested and processed to make dried ginseng and ginseng extract. The reduction factors of residual pesticides were calculated by determination of the pesticides in each processing stage of ginseng. Reduction factor (dry basis) of pesticides (azoxystrobin, fenhexamid, cyprodinil) were 0.73, 0.96 and 0.24 for dried ginseng and 3.23, 5.74 and 1.20 for ginseng extract. All the residual pesticides were reduced by drying or processing of ginseng, however, fenhexamid did not.
Optimization of self-dispersible floating granule (UG) of flucetosulfuron and its herbicidal performance
Kim, Do-Soon ; Kim, Tae-Young ; Lee, Jong-Nam ; Hwang, Ki-Hwan ; Lee, Yong-Sang ;
The Korean Journal of Pesticide Science, volume 10, issue 1, 2006, Pages 28~35
This study was conducted to optimize formulation factors of a self-dispersible floating granule of flucetoaulfuron that can be used at a low application volume (5 kg
). SPA and xanthan gum were selected as a binder because blending of them showed good granulation and floatation. Potassium chloride selected as a filler also showed good granulation, floatation and disintegration properties. Among wetters and dispersants, Surfynol 440 gave the best dispersibility The optimum granule size was determined to be 1.0 mm considering floating time and dispersibility. Flucetosulfuron was mixed with the blend of SPA and xanthan gum, potassium chloride, and Surfynol 440 and formulated as a floating self-dispersible granule at 1.0 mm in diameter. Indoor and outdoor field experiments showed that the floating granule of flucetosulfuron performed well, covering long range from the application spot up to 15 m in weed control. Therefore, this floating technology may be used for laborsaving herbicide formulation development and help to reduce workloads for herbicide application.
In Vitro Antifungal Activities of 13 Fungicides against Pepper Anthracnose Fungi
Choi, Yong-Ho ; Kim, Heung-Tae ; Kim, Jin-Cheol ; Jang, Kyoung-Soo ; Cho, Kwang-Yun ; Choi, Gyung-Ja ;
The Korean Journal of Pesticide Science, volume 10, issue 1, 2006, Pages 36~42
For the effective control of pepper anthracnose, in vitro antifungal activities of 13 commercial fungicides were tested on spore germination, mycelial growth, and sporulation of Colletotrichum gloeosporioides, anthracnose fungus. Among them, captan, chlorothalonil, dithianon, fluazinam and folpet completely inhibited the spore germination of C. gloeosporioides at the concentration of 0.8
. They were followed by mancozeb and propineb, showing more than 80% inhibition of spore germination at 20
. The mycelial growth of C. gloeosporioides was strongly inhibited by fluazinam and nuarimol. Except for nuarimol, most of the fungicides represented more antifungal activity on the spore germination than the mycelial growth of C. gloeosporioides. Azoxystrobin and metominostrobin, Strobilurin fungicides, were only moderately active against the spore germination and the mycelial growth of C. gloeosporioides, but they were effective antisporulant against C. gloeosporioides. From these results, control of pepper anthracnose will have achieved by preventive spray of the commercial fungicides.
Insecticidal Activity of Essential Oils against Larvae of Culex pipiens pallens
Kang, Shin-Ho ; Kim, Min-Ki ; Seo, Dong-Kyu ; Kim, Gil-Hah ;
The Korean Journal of Pesticide Science, volume 10, issue 1, 2006, Pages 43~49
Larvicidal activity of 34 plant essential oils were tested against the 4th instar larvae of Culex pipiens pallens. Among them, six oils (basil, fennel, caraway seed, lime, thyme red, and thyme white) showed more than 80% mortality at 100 mg
concentration. GC and GC-MS analyses of the six essential oils and bioassay of their components revealed that anethole (a major component of fennel and basil oil) and (+)-limonene (a major component of caraway seed and lime oil) showed higher larvicidal activities than others. In addition to the above two components,
-pinene, and thymol showed higher larvicidal activity than Bt product.
Characteristics of resistance to chlorpyrifos in diamondback moth(Plutella xylostella L.) collected from Chinese cabbage alpine farmland at Gangwon-do, Korea
Cho, Jun-Mo ; Kim, Kyung-Joo ; Kim, Seong-Soo ; Park, Hong-Ryeol ; Lim, Chun-Keun ; Hur, Jang-Hyun ;
The Korean Journal of Pesticide Science, volume 10, issue 1, 2006, Pages 50~55
A field-resistant strain of the diamondback-moth(Plutella xylostella L.), collected from Chinese cabbage alpine farmland at Gangwon-do, Korea, was used for determination of the characteristics of resistance to chlorpyrifos using the activities of esterases and glutathione-S-transferase(GST), protein sequestration and AChE insenstivity. Although the activities of esterases extracted from resistant strain and susceptible strain were not significantly different, isozyme bands shown on the electrophoresis were different. GST activity from field resistant strain was 1.5-fold higher than that of susceptible. No differences were shown between resistant and susceptible ones in protein sequestration. The insensitivities of AChE to chlorpyrifos, however, extracted from susceptible strain was 460-fold higher than those of resistant. These results indicated that the insensitivity of AChE is the major factor for developing the resistance and activities of GST might be a minor factor.
Characterization of antimicrobial proteins produced by Bacillus sp. N32
Lee, Mi-Hye ; Park, In-Cheol ; Yeo, Yun-Soo ; Kim, Soo-Jin ; Yoon, Sang-Hong ; Lee, Suk-Chan ; Chung, Tae-Young ; Koo, Bon-Sung ;
The Korean Journal of Pesticide Science, volume 10, issue 1, 2006, Pages 56~65
An antagonistic bacterial isolate, that inhibits the growth of plant pathogens, was selected and identified from 5,000 isolates screened from the rhizosphere of various crop plants. An isolate Bacillus sp. N32, tested against Colletotrichum gloeosporioides causing anthracnose disease in hot pepper, produced both a heat resistant antifungal protein and a heat sensitive antifungal protein. The heat resistant protein was partially purified by Ammonium sulfate fractionation and gel filtration chromatography. The bioautography showed that the proteins possessed high antifungal activity. The biosynthetic gene cluster responsible for the heat resistant antifungal protein was cloned from cosmid library using DNA probe obtained from PCR product with the primers targeting the conserved nucleotide sequence of the synthetic genes reported earlier, Most of the clones obtained showed higher homology to fengycin antibiotic synthetic gene family reported earlier. On the other hand, the heat sensitive protein was isolated from SDS-PAGE and electroblotting to determine the N-terminal amino acid sequences. The heat sensitive antifungal protein gene was cloned from the
libraries using a DNA probe based on the N-terminal amino acid sequences of the heat sensitive protein. We are contemplating to clone and sequence the whole gene cluster encoding the heat sensitive protein for further analysis.
Synthesis of 2-Mercaptobenzoxazoles and 2-Mercaptobenzimidazole
Chung, Kun-Hoe ; Lee, Dong-Guk ; Ko, Young-Kwan ; Ryu, Jae-Wook ; Woo, Jae-Chun ; Koo, Dong-Wan ; Kim, Dae-Whang ;
The Korean Journal of Pesticide Science, volume 10, issue 1, 2006, Pages 66~68
New synthetic method of 2-mercaptobenzoxazoles and 2-mercaptobenzimidazoles was established using elemental sulfur, dichloromethane, inorganic base and catalysts in alcohol solvents. This reaction condition gave products in high yields.