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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 15, Issue 4 - Dec 2011
Volume 15, Issue 3 - Sep 2011
Volume 15, Issue 2 - Jun 2011
Volume 15, Issue 1 - Mar 2011
Selecting the target year
Enhancement of Foliar Uptake and Leaf Deposit of Thifluzamide Formulation and Fungicidal Activity Against Rice Sheath Blight
Yu, Ju-Hyun ; Choi, Gyung-Ja ;
The Korean Journal of Pesticide Science, volume 15, issue 1, 2011, Pages 1~7
In order to enhance the fungicidal activity of the thifluzamide formulation against rice sheath blight, the surfactants which was able to facilitate the foliar uptake or increase the leaf deposit of thifluzamide on rice plants were selected, and the formulations containing the surfactants were tested to compare the fungicidal efficacy against the rice sheath blight with a control WP formulation. The WP suspension containing dodecaethylene glycol monohexadecyl ether as an activator increased the foliar uptake of thifluzamide on rice plants, but its fungicidal efficacy against rice sheath blight was decreased. The addition of the combined surfactants with either heptaethylene glycol monoisododecy ether or heptaethylene glycol monotridecyl ether and sodium dioctylsulfosuccinate to WP suspension increased the leaf deposition of thif1uzamide at around 5 times of that without a spreader-sticker that median control concentrations of thifluzamide against rice sheath blight were decreased to 4.4 mg
and 3.4 mg
Study of Pesticide Residue Allowed Standard of Methoxyfenozide and Novaluron on Aster scaber during Cultivation Stage
Hong, Ji-Hyung ; Lim, Jong-Sung ; Lee, Cho-Rong ; Han, Kook-Tak ; Lee, Yu-Ri ; Lee, Kyu-Seung ;
The Korean Journal of Pesticide Science, volume 15, issue 1, 2011, Pages 8~14
Methoxyfenozide and novaluron was sprayed on Aster scaber during cultivation period. Samples were collected 7 times in 0-10 days after spraying. Both methoxyfenozide and novaluron were extracted with methanol, partitioned with dichloromethane and analyzed by HPLC. At the fortified level of 0.4 and
, average recovery of methoxyfenozide were
, and novaluron were
, respectively. Biological half-life of methoxyfenozide was 3.99 days and novaluron which was 3.16 days at recommended spray level on cultivation period of the plant. The major reducing factor of novaluron was the increased weight of the plant. In case of application of methoxyfenozide and novaluron following pesticide guide line for safe use, the final residue level was calculated to lower than maximum residue level (MRL).
Monitoring of Neonicotinoid Pesticide Residues in Paprika Using UPLC-MS/MS from Gyeongnam Region
Kim, Nam-Kuk ; Lee, Seung-Hwa ; Nam, Yu-Jeong ; Moon, Kyung-Mi ; Park, Min-Ho ; Yun, Mun-Hee ; Kim, Mi-Young ; Jang, Hyun-Min ; Shin, Bong-Shig ;
The Korean Journal of Pesticide Science, volume 15, issue 1, 2011, Pages 15~21
Monitoring or follow-up surveying pesticide residues in agricultural commodities is the key to meet the international regulations and to enhance international competitiveness of Korean agricultural commodities. Six neonicotinoid insecticides, acctamiprid, clothianidin, dinotefuran, imidacloprid, thiacloprid, and thiamethoxam were monitored in 95 paprika samples collected from Gyeongnam area. Thc pesticide residues were extracted by EN 15662 buffer based on the QuEChERS method, clean-upped with dispersive solid-phase extraction method to remove interfering pigments, and analyzed using UPLC-MS/MS. The neonicotinoid pesticides were detected in 90.5% of the paprika samples. Two or more pesticides were detected in 82.3% of samples. Although detection frequencies were high, all samples complied with the maximum residue limits (MRLs) set by both the Korea Food and Drug Administration (KFDA) and Japanese Ministry of Health, Labour and Welfare.
Investigation of Nonylphenols Contamination in Solvents and Solid-phase Extraction Cartridge, and its Removal Protocols
Park, Jong-Min ; Choi, Geun-Hyonng ; Kim, Jung-Im ; Hong, Su-Myeong ; Kwon, Oh-Kyung ; Im, Geon-Jae ; Kim, Jin-Hyo ;
The Korean Journal of Pesticide Science, volume 15, issue 1, 2011, Pages 22~27
Nonylphenols are toxic compounds classified as endocrine disruptors. We investigated the nonylphenols clean-up procedures for the contamination control in the quantitative analysis. In this research we analyzed the residual nonylphenols in the solvent and the SPE cartridges. First, at the analysis of HPLC grade solvents (n-hexane, diethyl ether, ethyl acetate and its mixture), diethyl ether was confirmed the residue as 0.963
, and we eliminated the contaminant through the distillation with
, Second, at the analysis of SPE cartridges (silica gel and Florisil), all products were showed the residue at 0.046~13.0
, but unfortunately the residue in the cartridge were not easily removed with referenced methods in all tested SPE cartridges except in silica gel SPE cartridge with glass ware.
The Exposure Risk Assessment of Residual Pesticides in Tea
Kim, Jae-Kwan ; Oh, Moon-Seog ; Kim, Ki-Yu ; Kim, Yeong-Su ; Son, Mi-Hee ; Bae, Ho-Jung ; Kang, Chung-Won ; Park, Young-Bok ; Yoon, Mi-Hye ; Lee, Jong-Bok ; Jeong, Ju-Yeon ;
The Korean Journal of Pesticide Science, volume 15, issue 1, 2011, Pages 28~35
The investigation of 218 residual pesticides for 19 types of tea (persimmon leaf tea, chrysanthemum tea, green tea, lavender tea, rosemary tea, dandelion leaf tea, puer tea, mulberry leaf tea, hydrangea leaf tea, jasmine tea, nuomixiang tea, buckwheat tea, mugwort tea, lotus leaf tea, oolong tea, longjing tea, rose tea, tiehkwanyin tea and huoguo tea) obtained from markets in Ansan and Suwon was carried out to assess the risk for residual pesticides in tea. The detection rate was 23.1 % (19 samples of total 65 tea samples) and the detected pesticides were 15 pesticides, such as bifenthrin, bromopropylate, chlorpyrifos, cyhalothrin, cypermethrin, chlorfenapyr, dicofol, endosulfan, fenpropathrin, fludioxonil, fenvalerate, iprobenfos, isoprothiolane, tetradifon and triazophos. The range of concentrations for the detected residual pesticides was 0.01 to 1.24 mg/kg which showed below their maximum residue limits (MRL), but the residual concentration of bifenthrin in a puer tea showed above the legal limit of 0.3 mg/kg. The result of risk assessment of residual pesticides for the detected 15 samples showed that EDI (estimated daily intake) of the pesticides detected ranged 0.0001~0.0844% of their ADI (acceptable daily intake).
Survey on the Pesticides Suspected as an Endocrine Disrupter In Agricultural Products Distributed in Seoul
Kim, Ouk-Hee ; Park, Sung-Kyu ; Choi, Young-Hee ; Seoung, Hyun-Jung ; Han, Sung-Hee ; Lee, Young-Ju ; Jang, Jung-Im ; Kim, Yun-Hee ; Jo, Han-Bin ; Park, Geon-Yong ; Yu, In-Sil ; Han, Ki-Young ;
The Korean Journal of Pesticide Science, volume 15, issue 1, 2011, Pages 36~47
This study was performed to investigate the contaminated status of endocrine disruptor-suspected pesticides in agricultural products distributed in northern Seoul in 20l0. We analyzed 33 kinds of pesticides by multiresidue analysis method in 3,081 samples. Twelve pesticidcs were detected 600 times and violated 22 times from the agricultural products. The highest frequency of detection was procymidone and that of violation was endosulfan. The highest rates of detection divided violation times as diazinon. In agricultural products, 466 samples had pesticide residues and 22 samples violated the maximum residue limits (MRLs). Agricultural products were also classified by type and red pepper powder belonged to the others was the highest detection rate at 70.7%, fruiting vegetables 35.3%, tea leaves 23.6%, stalk and stem vegetables 21.2%, fruits 14.6% and leafy vegetables 11.2%. The rates of violation sample were stalk and stem vegetables 1.1%, leafy vegetables 1.0% and roots and tubers 0.4%. Leek was to be managed primarily because it had the high detection and violation ratio and was detected together several pesticides.
Risk Assessment for Aquatic Organisms of Pesticides Detected In Water Phase of Six Major Rivers in Korea
Lee, Ji-Ho ; Park, Byung-Jun ; Kim, Jin-Kyung ; Kim, Won-Il ; Hong, Su-Myung ; Im, Geon-Jae ; Hong, Moo-Ki ;
The Korean Journal of Pesticide Science, volume 15, issue 1, 2011, Pages 48~54
Risk assessments of pesticides detected in six major rivers during peak season were estimated for algae, Daphnia, and fish using hazard quotient (HQ) indexes. The eight pesticides (isoprothiolane, hexaconazole, diazinon, chlorpyrifos, prothiofos, alachlor, butachlor, molinate) were detected within the range of 0.027~12.871
. Detection frequency of isoprothiolate was estimated to be high at 67.5%, and those of the others varied from 15.0 to 37.5%, Hazard Quotients (HQ) indexes varied by freshwater organisms (algae, Daphnia, and fish). Overall, the ecological risk probability due to exposure of pesticides detected in major rivers did not reveal based on HQ indexes below 1.0. Particularly, butachlor and molinate for algae, chlorpyrifos, diazinon, prothiofos for Daphnia, and chlorpyrifos for fish acted as dominant contributors in increasing the ecological risk in six major rivers. This implied that integrated ecological risk assessment is required using various biological species, reflecting toxicity sensitivity. This study may provide the essential data in establishing the priority for pesticides management in major rivers, Korea.
Population Dynamics of Effective Microorganisms in Microbial Pesticides and Environmental-friendly Organic Materials According to Storing Period and Temperature
Kim, Yong-Ki ; Hong, Sung-Jun ; Jee, Hyung-Jin ; Shim, Chang-Kee ; Park, Jong-Ho ; Han, Eun-Jung ; An, Nan-Hee ; Lee, Seong-Don ; Yoo, Jae-Hong ;
The Korean Journal of Pesticide Science, volume 15, issue 1, 2011, Pages 55~60
To work out quality control methods of environmental-friendly organic materials (EFOMs), the reason and basis for EFOM-selection and farmer's favorite formulation type of EFOMs, etc were investigated on farmers who had been practicing environmental-friendly agriculture. EFOMs used were soil amendments, control agents of plant diseases and insect pests, plant growth promotion formulations, in turns. In EFOMs application time, 22.7% of farmers sprayed EFOMs without delay after they were bought, in other hand, 77.3% of farmers used EFOMs which had been bought and stored for some period. Microbial density on seventeen environmental-friendly microbial formulates (EFMFs) including microbial pesticides, a microbial fertilizer, and environmental-friendly organic materials was investigated at different storing temperature and shelf life. When the microbial density of EFMFs was investigated without delay after they were bought, all used microbial pesticides and a microbial fertilizer was confirmed to be optimal for the certified density but two of environmental-friendly organic materials was confirmed not to be optimal. When microbial density of 17 EFMFs were investigated after storing them for six months at
, only one of 9 microbial pesticides was confirmed not to be optimal, the other hand four of seven environmental-friendly organic materials not to be optimal, which each of their microbial density was less than the certified density. Population dynamics of microbial agents was much more influenced in fluctuated temperature (room temperature) than in static temperature condition (
). Shelf life of microbial agents according to microbial formulation type were high in granule type, liquid wettable type and liquid type in turns.
Monitoring of Bifenazate Resistant Two-spotted Spider Mite, Tetranychus urticae Using Molecular Detection Method
Lee, Kyu-Ri ; Shin, Yun-Ho ; Cho, Sun-Ran ; Koo, Hyun-Na ; Choi, Jang-Jeon ; Ahn, Ki-Su ; Kim, Gil-Hah ;
The Korean Journal of Pesticide Science, volume 15, issue 1, 2011, Pages 61~67
In 2010, two-spotted spider mite, Tetranychus urticae was collected from the rose greenhouse and apple orchards in Cheongju (CJ), Chungju (CUJ)-1, CUJ-2, Kangjin (KJ), Yesan (YS), and Yeongju (YJ). Among them, KJ and YS strain showed high resistance to bifenazate of 964.5- and 1l30-fold, respectively. The other strains showed low resistance to bifenazate. By analyzing the mitochondrial cytochrome b (cytb) sequence, G126S point mutation was detected in KJ and YS strain. Thus, G126S point mutation in the mitochondrial cytb was available molecular detection marker for selection of bifenazate resistant T. urticae. Two molecular detection methods, quantitative sequencing (QS) and PCR amplification of specific alleles (PASA) were well detected specific G126S point mutation. Therefore, these methods can be used to monitor the resistance allele in field population of T. urticae and bifenazate resistance management strategy.
Developing Trend of nSAR Modeling and Pesticides
Ock, Hwan-Suck ;
The Korean Journal of Pesticide Science, volume 15, issue 1, 2011, Pages 68~85