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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 9, Issue 4 - Dec 2005
Volume 9, Issue 3 - Sep 2005
Volume 9, Issue 2 - Jun 2005
Volume 9, Issue 1 - Mar 2005
Selecting the target year
Establishing residue limits and GAP in the use of pesticides
Lee, Su-Rae ;
The Korean Journal of Pesticide Science, volume 9, issue 2, 2005, Pages 113~121
Consumer protection and prevention of foodborne diseases are essential elements of food safety program for every country The food safety program proposed by WHO was introduced and the importance of GAP in establishing residue limits of intentional additives in food production was emphasized. The procedures and differences in establishing maximum residue limits of pesticides on food crops by Codex Alimentarius Commission and Korea were explained. Finally, considerations in harmonization of Korean standards with Codex MRLs were suggested.
Syntheses of Pyrrolo[2,1-b]thiazole Carboxanilides and Their Selective Antifungal Activities against Rice Blast and Wheat Leaf Rust
Hahn, Hoh-Gyu ; Nam, Kee-Dal ; Yang, Bum-Seung ; Choe, Gyeong-Ja ; Cho, Kwang-Yun ; Lee, Seon-Woo ;
The Korean Journal of Pesticide Science, volume 9, issue 2, 2005, Pages 122~131
For development of new agrochemical fungicide, syntheses of pyrrolo[2,1-b]thiazole carboxanilide derivatives 9 and antifungal screening against 6 kinds of plant pathogens were carried out. Functionalization of carboxylic acid on C-2 into carboxanilide in the pyrrolo[2,1-b]thiazole resulted in new 20 candidates, in which are
-unsaturated carboxanilide and methyl groups that are in cis relationship. Treatment of acetoxy-1,4-thiazin with magnesium in refluxing methanol gave pyrrolo[2,1-b]thiazole ethyl ester 4 in higher yield than that of the previous report. Hydrolysis of this compound afforded the corresponding acid 5, which reacted with aniline derivatives in the presence of coupling reagent, DIC to give pyrrolo[2,1-b]thiazole carboxanilides 9. As the result of in vivo antifungal assay of 9 against rice blast, rice sheath blight, cucumber gray mold, tomato late blight, wheat leaf rust, and barley powdery mildew, some compounds showed selectively antifungal activities against the rice blast and wheat leaf rust.
Synthesis and fungicidal activity of new
-methoxyacrylate derivatives having thio-enol side chain
Lee, Hyeon-Kyu ; Kim, Ji-A ; Choi, Eun-Bok ; Park, Chwang-Siek ; Choi, Gyung-Ja ;
The Korean Journal of Pesticide Science, volume 9, issue 2, 2005, Pages 132~139
-methoxyacrylate derivatives 1-4 having thio-enol side chain were prepared and subjected to in vivo screening for fungicidal activity against phytopathogenic fungi and many of them showed good fungicidal activities against especially rice blast and wheat leaf rust at 100 ppm.
Two Class Approximation of TLB (Tomato Late Blight) Activity Data
Hahn, Hoh-Gyu ; M.D., Ashek Ali ; Cho, Seung-Joo ;
The Korean Journal of Pesticide Science, volume 9, issue 2, 2005, Pages 140~145
Quantitative Structure Activity Relationship (QSAR) assumes the relatedness between physical property and biological activity. However, activity data measured at single concentration such as percent activity have not been used extensively for modeling purpose. This probably comes from the fact that these values are qualitative instead of quantitative. To utilize percent activity data for molecular modeling, we classified the whole data into two classes. One class represents the active while the other signifies the inactive. The percent activity data of
-Ketoacetoanilides measured for TLB (Tomato Late Blight) were investigated. CoMFA (Comparative Molecular Field Analysis) was used as a discriminant function. Using CoMFA provides 3D (three dimensional) information, which is crucial for chemical insight. It can also serve as a predictive model. The resultant model classified the given data correctly (98%). When LOO (leave-one-out) crossvalidation procedure was applied, the classification accuracy was 69%. Therefore two class approximation of percent activity data with CoMFA can be utilized to understand the relationship between chemical structure and biological activity and design subsequent chemical analogs.
Molecular Holographic Quantitative Structure-Activity Relationship (HQSAR) for the Fungicidal Activities of New Novel 2-Alkoxyphenyl-3-phenylthioisoindoline-1-one Derivatives
Sung, Nack-Do ; Yoon, Tae-Yong ; Jung, Hoon-Sung ;
The Korean Journal of Pesticide Science, volume 9, issue 2, 2005, Pages 146~152
The fungicidal activities against resistance phytophthora blight (RPC; 95CC7303) and sensitive phytophthora blight (Phytopthora capsici) (SPC; 95CC7105) by new 2-alkoxyphenyl-3-phenylthioisoindoline-1-one derivatives (A & B) were studied using molecular holographic quantitative structure activity relationships (HQSAR) methodology. Based on the results, the statistical results of the two best HQSAR models, RI-B for RPC and SII-A for SPC exhibited the best predictability and fitness for the fungicidal activities based on the cross-validated value (
) and non cross-validated value (
, respectively. The quality of the model for SPC was slightly than that of RPC. From the based graphical analyses of atomic contribution maps, it was confirmed that the novel selective character for fungicidal activities against RPC depends upon the 2-fluoro-4-chloro-5-alkoxyanilino group.
Safening Activity of Optically Active
-Methylbenzylphenylurea toward Bensulfuron-methyl and Pyribenzoxim Injury to Rice
Ryoo, Jae-Hwan ;
The Korean Journal of Pesticide Science, volume 9, issue 2, 2005, Pages 153~158
Safening activities of optically active
-methylbenzylphenylureas on crop injury of rice (Oryza sativa L., cv. Tsukinohikari, japonica) caused by bensulfuron-methyl (methyl 2-[[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]methyl]benzoate) and pyribenzoxim (benzophenone o-[2,6-bis[(4,6-dimethoxy-2-pyrimidinyl)oxy]benzoyl]oxime) were investigated. Some derivatives of the optically active compounds exhibited strong safening activity against growth inhibition of rice by bensulfuron-methyl. Out of the derivatives tested, (S)-2,3-diCl and (S)-2-F-4-Me derivatives showed greater relieving activity than that of dymuron. In addition, the stress relieving activity was also obtained when they were applied at 4 days after bensulfuron-methyl treatment. On the other hand, crop injury caused by pyribenzoxim was relieved by about 95% with (S)-2-F-4-Me derivative in shoots and roots of rice seedlings.
Inter-lab validation for the derivatization method by TFE/TFAA of acidic herbicides
Pyo, Hee-Soo ; Park, Song-Ja ; Lee, Kang-Jin ; Hong, Jong-Ki ; Shin, Ho-Sang ;
The Korean Journal of Pesticide Science, volume 9, issue 2, 2005, Pages 159~165
A sensitive derivatization method by using the TFE/TFAA as derivative reagent is proposed for the determination of acidic herbicides in water, by using this method, method detection limits are improved by 10 times and sample volumes are decreased by 5 times compared with other methods such as U.S. EPA and SPEED 98. And also, in order to suggest higher creditable standard operating procedure (SOP), intra- and inter-lab validation test carried out by four laboratories include our lab. The results of intra and inter-lab validations in same experimental conditions show good linearity in given range of concentrations as a
ng/ml, and range of accuracies and precisions show
(for intra-lab validation) and
(for inter-lab validation), respectively.
Analysis of pesticide residues on sweet persimmon harvested from systemized orchards for exporting to USA
Kim, Young-Sub ; Choo, Ho-Yul ; Park, Chung-Gyoo ; Lee, Dong-Woon ;
The Korean Journal of Pesticide Science, volume 9, issue 2, 2005, Pages 166~172
Temporary control schedules were tested at sweet persimmon orchards to development new control programs to meet the quarantine requirements of USA in 2002. The 'USA export-type control orchards' were spayed with pesticides (azoxystrobin, carbaryl, cyhexatin, fenarimol, mancozeb, methoxyfenozide, spinosad and trifluxistrobin) which were possibly adaptable to the poem trees in USA. Pesticide residues in the sweet persimmon fruits harvested from USA export-type control orchards were analyzed. Azoxystrobin, mancozeb, trifloxystrobin, spinosad, carbaryl, and cyhexatin were not detected by the experimental methods. The residues of fenarimol and methoxyfenozide in sweet persimmon of USA export-type control orchards were 0.016-0.020 ppm and 0.022-0.029 ppm, respectively. These levels are quite below the maximum residue limit level of USA (below 0.1 ppm in fenarimol and 7 ppm in methoxyfenozide). These results suggest that new control programs could be developed by modifying the USA export-type control schedule tested in this study to meet the quarantine requirements of USA, if we could suppress the damage of plant bugs.
Herbicidal Activity of Korean Native Plants (III)
Kim, Song-Mun ; Kim, Mi-Sung ; Lee, Yu-Sun ; Kim, Hee-Yeon ; Choi, Hae-Jin ; Heo, Su-Jeong ; Kwon, Soon-Bae ; Kim, Kyung-Hee ; Han, Sang-Sub ; Lim, Sang-Hyun ;
The Korean Journal of Pesticide Science, volume 9, issue 2, 2005, Pages 173~180
This study was conducted of Korean native plants to screen herbicidal activity which could be used for the development of new natural herbicides. Eighty-one plants were collected from Wan and Juju islands in Korea and their methanol extracts were obtained. Heibicidal activities of the methanol extracts were determined by seed bioassay using rapeseed (Brassica napus L.) seedlings. Among eighty-one species, eleven plants were highly herbicidal (
): Abies koreana WILS., Anthemis nobilis L., Callicarpa mollis SIEB. et ZUCC., Cirsium setidens, Euonymus maackii RUPR., Euphorbia jolkini BOISS., Kadsura japonica DUNAL, Paeonia aliflora Pall var. tricocarpa BUNGE, Philadelphus tenuifolius RUPR. et MAXIM., Sapium sebiferum, Vicia angustifolia var. segetilis K. KOCH. Fifty plants were shown moderate herbicidal activity (1,000
), however, twenty plants were not shown any herbicidal activity.
Synthesis and herbicidal activities of heterocyclic PPO inhibitor derivatives substituted with epoxy groups
Jeon, Dong-Ju ; Park, Kwaun-Yong ; Park, Chang-Min ; So, Won-Young ; Kim, Hyoung-Rae ; Song, Jong-Hwan ; Hwang, In-Taek ;
The Korean Journal of Pesticide Science, volume 9, issue 2, 2005, Pages 181~184
The heterocyclic PPO inhibitor compounds have been studied due to their potent herbicidal effects without toxic to human and animals. We have designed and synthesized 4,5,6,7-tetrahydroindazole, maleimide, and tetrahydrophthalimide compounds carrying diverse epoxide substituents at 5- position of the phenyl group. Their herbicidal activities were evaluated under submerged paddy conditions. These results showed that 4,5,6,7-tetrahydroindazole compounds gave potent herbicidal activities especially to ECHOR, MOOVA, and CYPSE at a relatively low rate of 16 g/ha and improved tolerance on rice compared to S-275 as a standard herbicide in this experiment.