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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 8, Issue 4 - Dec 2004
Volume 8, Issue 3 - Sep 2004
Volume 8, Issue 2 - Jun 2004
Volume 8, Issue 1 - Mar 2004
Selecting the target year
Inhibition of protoporphyrinogen oxidase activity and selectivity of new compound EK-5439
Hong, K.S. ; Kim, H.R. ; Jeon, D.J. ; Lee, B.H. ; Song, J.H. ; Cho, K.Y. ; Hwang, I.T. ;
The Korean Journal of Pesticide Science, volume 8, issue 2, 2004, Pages 79~87
3-Chloro-2-[4-chloro-2-fluoro-5-(5-methyl-3-phenyl-4,5-dihydroisoxazol-5-ylmethoxy)-phenyl]-4,5,6,7-tetrahy dro-2H-indazole(EK-5439) demonstrated rice selectivity and herbicidal activity on annual weeds, such as Echinochloa oryzicola, Monochoria vaginalis, Lindernia pyxidaria, Rotala indica, Aneilema keisak, Cyperus difformis, and Ludwigia prostrata at doses of 16-63 g a.i./ha. However, the application window was limited from pre-emergence to 5 days after transplanting. The control efficacy of EK-5439 on barnyardgrass was 4 times higher than that of oxadiazon. EK-5439 was excellently safe to the 16 different transplanted rice cultivars treated 2 days after transplanting. These compounds have the mechanism of action on the chlorophyll biosynthesis like protoporphyrinogen IX oxidase inhibitors.
FT-NMR as an analytical tool for identification of inert materials in crop protection products
Choi, Dal-Soon ; Kyung, Suk-Hun ; Hong, Su-Myeong ; Jin, Yong-Duk ; Lee, Hea-Keun ; Kim, Jin-Hwa ; Ryu, Gab-Hee ;
The Korean Journal of Pesticide Science, volume 8, issue 2, 2004, Pages 88~94
In order to evaluate NMR spectrometer as the analytical tool for identification of individual adjuvant in crop protection products, the standard sample of individual adjuvant was analyzed by NMR spectrometer and then the formulation of crop protection products was also analyzed. Almost polymer system of surfactant was a co-polymer and there was an excess of ethylene. The most intense signal comes from long polyethylene blocks, 70.5 ppm. The carbonyl groups of ester group resonate at 173.5 ppm. Analytical sample was prepared in NMR tube without extraction, cleanup, concentration, or chromatographic separation. Identification of individual adjuvant in crop protection products was conducted by comparison of sample and reference spectra. NMR spectrometer was useful to analyze adjuvant in crop protection products without preparation process.
Risk assessment for estrogenic effect of the suspected endocrine disrupting pesticides
Lee, Je-Bong ; Shin, Jin-Sup ; Lee, Hee-Dong ; Jeong, Mi-Hye ; You, Are-Sun ; Kang, Kyu-Young ;
The Korean Journal of Pesticide Science, volume 8, issue 2, 2004, Pages 95~102
The present study was conducted to test and evaluate estrogenic effect of 17 pesticides including benomy1 and carbaryl, being suspected as endocrine disrupting chemicals. For estrogenic effect examination, luciferase assay were achieved with human ovarian cancer cell, BG1Luc4E2. Estrogenic effects of cypermethrin, dicofol, endosulfan, esfenvalerate, and fenvalerate were observed at the concentration of
M by estrogen receptor binding assay. Relative luciferase potency and relative luciferase effects compared with
, 56% for dicofol, and
, 72% for endosulfan, respectively. Estimated maximum daily intake for pesticides was calculated from maximum residue limit of agricultural commodity and food consumption was 1.2298 mg/person. Theoretically calculated blood estrogen level from dietary intake for pesticides based on MRL in Korea, 3.075 ng/L was equivalent to 15% of estrogen concentration in normal blood, but practical monitoring data, 0.01938 ng/L was equal to 0.09693% of estrogen concentration in normal blood.
Physico-chemical stability of pesticide formulations under different storage conditions
Lee, Hee-Dong ; Kim, Kwang-Ho ; Rhi, Ja-Hyeun ; Shin, Wook-Cheol ; Park, Hyeon-Ju ; Lee, Soo-Hyung ; Park, Seung-Soon ;
The Korean Journal of Pesticide Science, volume 8, issue 2, 2004, Pages 103~106
To confirm physico-chemical stability of formulated products, this study was conducted under different storage conditions; room temperature and accelerated temperature of
. The tested pesticide formulations were dichlorvos 50% EC, acephate 50% WP, hymexazol 4% DP, thiram 80% WP and isoprothiolane 12% GR. The selected formulations were stored for 10 weeks and 5 years under the given temperature in maximum and contents of active ingredients were also analyzed by GLC or HPLC after each time of storage. The degradation rates of 5 active ingredients under the two conditions showed a similar trend except acephate. Acephate was rapidly decomposed at
but slowly decomposed at room temperature, and the degradation rate under the accelerated condition was 2.4 to 5-fold higher than that under the room temperature. Consequently, the stability test on active ingredients in pesticide formulations was able to recommend to be carried out under the accelerated condition except acephate. And the physical properties of all formulations tested under two storage conditions were good.
Residue characteristics of hexaconazole and chlorothalonil in several fruits
Lee, Hee-Dong ; Kyung, Kee-Sung ; Kwon, Hye-Young ; Ihm, Yang-Bin ; Kim, Jin-Bae ; Park, Seung-Soon ; Kim, Jang-Eok ;
The Korean Journal of Pesticide Science, volume 8, issue 2, 2004, Pages 107~111
The study was carried out to investigate the pesticide residual characteristics in peaches, pear and grape. Pesticide residue patterns were remarkably different because of major factors affecting the pesticide residue patterns such as ratios of surface to weight, surface matrices, cultivations, sizes, increase rate of weight, and varieties of fruits, etc.. Pesticide residue levels in grape appeared higher than those in peaches and pear, because the pesticide solution sprayed was infiltrated and accumulated between grape granules. The matrices composing of fruit surface and the ratios of surface area to weight on fruits seemed to playa key role for determining the pesticide residual characteristics in fruits.
Residual properties of ethoprophos with treatment methods in sweet pepper under greenhouse condition
Kim, Jin-Bae ; Song, Byung-Hun ; Lee, Soo-Hyung ; Nam, Hong-Shik ; Son, Kyung-Ae ;
The Korean Journal of Pesticide Science, volume 8, issue 2, 2004, Pages 112~116
Two experiments were carried out in greenhouse under hydrophilic culture facilities and simulation model to provide residual characteristics of ethoprophos treated in sweet pepper's growth. To identify the pattern of absorption-translocation through the plant roots, ethoph 5 % GR were diluted in hydrophilic culture solution and drenched at a time per day for three days. The residue in fruit came closed to 0.02 ppm of MRL at 10 days after treatment(DAT) and reached peaked 0.06 ppm at 30 DAT and remained excess MRL level until around 40 DAT. To confirm the pattern of contamination by volatilization of ethoprophos, ethoph 5%GR was scattered 2 g per cubic meter. At 72 hours after treatment, the residue in sweet pepper fruit was exceed the MRL and the maximum residual amount were 0.62 ppm by volatilization. Consequently the use of ethoprophos during the growth of sweet pepper would be strong possibility to exceed the MRL.
Effects of algae on chronic assessment endpoints observed with Korean freshwater Cladocerans
Kim, Byung-Seok ; Park, Yoen-Ki ; Shin, Jin-Sup ; Kim, Jin-Hwa ; Ahn, Young-Joon ;
The Korean Journal of Pesticide Science, volume 8, issue 2, 2004, Pages 117~128
The influence of different feeding rates of three green algae on growth and reproduction in four Korean cladocera, Daphnia sp., Daphnia obtusa, Moina macrocopa, and Simocephalus vetulus was investigated. The growth and reproduction rates of Daphnia sp. fed Chlorella vulgaris cells were significantly increased than those of daphnid fed Senedesmus subspicatus and Selenastrum carpricornutum. The total offsprings of Daphnia sp. fed
cells Chlorella vulgaris for 21days were
, respectively. The Daphnia obtusa fed
cells Selenastrum carpricornutum was shown good reproduction rates,
, respectively. The Moina macrocopa fed
cells Senedesmus subspicatus as well as Simocephalus vetulus and
cells Chlorella vulgaris were shown good reproduction rates. All of algae tested were sufficient as a good diet for Korean Cladocerans in this study. However, the preferred alga was Chlorella vulgaris and the optimal feeding concentrations were
cells/mL, because the alga was shown most stable and generally high production rates in all cladocerans tested.
Identification of the impurities in the technical product of Atonic
Kyung, Kee-Sung ; Chung, Chang-Kook ; Lee, Jae-Koo ;
The Korean Journal of Pesticide Science, volume 8, issue 2, 2004, Pages 129~136
In order to determine the amounts of impurities and to identify the chemical structures of the impurities in the technical product of the plant growth regulator Atonic, the extracts of diethyl ether and dichloromethane were analyzed with GC-FID and GC-MSD. resulting in detection of five impurities and identification of their chemical structures. The amount of the active ingredient atonic in the technical product was about 84% and those of the impurities ranged from 0.24 to 10.74%. The identified impurities in this technical product are 2-methoxyphenol (guaiacol, m/z 124), 2-chloro-6-methoxyphenol and/or 4-chloro-6-methoxyphenol (m/z 158), 1,2-dimethoxy-4-nitrobenzene (m/z 183), and 2,6-bis(1,1-dimethylethyl)-4-methylphenol (m/z 220), suggesting that they are not hazardous impurities.
Biological properties of
-ketoacetoanilide chlorides against late blight of tomato
Choi, Gyung-Ja ; Jang, Kyoung-Soo ; Kim, Jin-Cheol ; Lee, Seon-Woo ; Cho, Kwang-Yun ; Nam, Kee-Dal ; Hahn, Hoh-Gyu ;
The Korean Journal of Pesticide Science, volume 8, issue 2, 2004, Pages 137~144
]-Ketoacetoanilide chloride derivatives containing a substituent at 4 in phenyl group (para) reduced specifically the development of tomato late blight caused by Phytophthora infestans. Among
ketoacetoanilide chloride derivatives, five (KIST163, KIST170, KIST260, KIST263, and KIST267) were selected and tested for their protective, curative, systemic, persistent activities, and disease control efficacy against tomato late blight on adult plants. They exhibited a strong l-day protective activity and
of KIST163 and KIST170 were 21.9 and
, respectively. However, they had little curative and systemic activities. Good persistence of KIST163 and KIST170 on tomato plants were observed against P. infestans; both KIST163 and KIST170 at
showed control values more than 75% in a 7-day protective applications. In addition, the two chemicals effectively controlled the occurrence of P. infestans on adult tomato plants. These results indicate that five
-ketoacetoanilide chloride derivatives are foliar fungicides with a preventive action and KIST163 and KIST170 have a potential for the control of tomato late blight in the fields.
Synthesis and herbicidal activities of 2-[4-(6-chloro-2-benzoxazolyloxy)-phenoxy]propionamide derivatives
Chang, Hae-Sung ; Chung, Kun-Hoe ; Ko, Young-Kwan ; Ryu, Jae-Wook ; Woo, Jae-Chun ; Koo, Dong-Wan ; Kang, Yong-Hee ; Kim, Tae-Joon ; Kim, Jin-Seog ; Chung, Bong-Jin ; Kwon, Oh-Yeon ; Kim, Dae-Whang ;
The Korean Journal of Pesticide Science, volume 8, issue 2, 2004, Pages 145~149
A series of 2-[4-(6-chloro-2-benzoxazolyloxy)phenoxy]-propionamide were synthesized and evaluated for post herbicidal activity under upland condition. 2-[4-(6-chloro-2-benzoxazolyloxy)phenoxy]-N-(2-fluorophenyl)-N methyl propionamide showed high herbicidal activity against barnyardgrass with good selectivity on rice.