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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Korean Journal of Pesticide Science
Journal Basic Information
Journal DOI :
The Korean Society of Pesticide Science
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Volume & Issues
Volume 12, Issue 4 - Dec 2008
Volume 12, Issue 3 - Sep 2008
Volume 12, Issue 2 - Jun 2008
Volume 12, Issue 1 - Mar 2008
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Thyroid Hormone-like Activity of Alachlor as R Endocrine Disruptor in Rats and HeLaTRE Cell Culture
You, Are-Sun ; Jeong, Mi-Hye ; Paik, Kyung-Hun ; Kim, Byung-Seok ; Kim, Jin-Bae ; Kwon, Oh-Kyung ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 207~214
This study was designed to investigate the suitability of the pubertal assay and the enhanced TG 407 as methods for detection of endocrine-mediated effects, especially thyroid function. Male and female Sprague-Dawley rats were gavaged daily with 0, 12.5, 25, 50 mg/kg alachlor in corn oil during 30 days. The effects of alachlor on thyroid gland, the genital organs and thyroid hormone were measured in male and female rats. Dose of alachlor 25, 50 mg/kg/day increased relative weight of testis and thyroid gland in exposed male rats and decreased relative weight of vagina in exposed female rats. Relative weight of thyroid gland was decreased in alachlor 25 mg/kg/day exposed female rats. Dose of alachlor 25, 50 mg/kg/day decreased plasma T4 and testosterone in female rats. Another purpose of this study was to investigate the effects of endocrine disruptors as like thyroid hormone in vitro. Luciferase activity was measured to dectect reaction of test chemicals and thyroid hormone response elements in HeLaTRE cell. Dose of alachlor 1 nM-1000 nM increased 100-134% luciferase activity compared with control.
The Acute and Chronic Toxicity Studies of Herbicide, Molinate to Waterfleas
Shin, On-Sup ; Kim, Byung-Seok ; Park, Yeon-Ki ; Park, Kyung-Hoon ; Lee, Je-Bong ; Kyung, Kee-Sung ; Ahn, Young-Joon ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 215~221
To assess the impact of molinate on freshwater aquatic organisms, acute and chronic toxicity studies for waterfleas were conducted. In acute toxicity studies for Daphnia magna, and Moina macrocopa, the 48-h
values were 11.4 and 8.3 mg/L respectively. And in reproduction toxicity studies for the same species, the NOEC's were 2.5 and 2.0 mg/L respectively. These results suggest that waterfleas have simillar sensitivity to molinate. On the other hand, the NOEC for 3-generation toxicity of moina macrocopa 0.16 mg/L, was much lower than those of acute values. This studies concludes that molinate has minimal risk to waterfleas in river.
Comparison of the Sensitivity of Freshwater Algae to 6 Pesticides for Paddy Rice
Bae, Chul-Han ; Park, Yeon-Ki ; Kim, Yeon-Sik ; Cho, Kyung-Won ; Lee, Suk-Hee ; Jung, Chang-Kook ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 222~228
Algal Growth-inhibition tests were conducted with 6 pesticides butachlor GR (5%), butachlor EW (33%), isoprothiolane GR (12%), isoprothiolane EC (40%), diazinon GR (3%) and diazinon EC (34%) to determine their comparative toxicity to three species of freshwater green algae Selenastrum capricornutum, Scenedesmus subspicatus, Chlorella vulgris and one species diatom Nitzschia palea. The test species were exposed to the test pesticide for 72 hours and the toxicity represented
value calculated by the reduction in growth rate at 72 hours. The toxicity of EC or EW formulation to green algae and diatom was higher than the toxicity of GR formulation at all test in this study. Also, the toxicity of EC formulation was higher than the toxicity technical pesticide. These results indicate that the types of pesticide formulation may affect on their toxicity on algae and the green alga, S. capricornutum and S. subspicatus were more sensitive than C. vulgris. Also, the sensitivity of the diatom, N. palea showed equal or lower than S. capricornutum, S. subspicatus but more sensitive than C. vulgris.
Honeybee Acute and Residual Toxicity of Pesticides Registered for Strawberry
Kim, Byung-Seok ; Park, Yoen-Ki ; Lee, Yong-Hoon ; Joeng, Mi-Hye ; You, Are-Sun ; Yang, Yu-Jung ; Kim, Jin-Bae ; Kwon, Oh-Kyung ; Ahn, Young-Joon ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 229~235
Lack of honey bee toxicity data for most pesticide products used for strawberry restricts to predict the adverse effects to foraging honey bee after treatment of pesticide in plastic house. This study was conducted to evaluate the actual risk of worker honey bees (Apis mellifera L.) through acute contact toxicity test, acute oral toxicity test and toxicity of residues on foliage test with 21 pesticide products. The mortality of honeybee sprayed with 6 pesticides including dichlofluanid WP showed significantly different from control at recommended application rate in acute contact toxicity test at 24 hours after treatment. Fenpropathrin EC and milbemectin EC treatment groups showed more than 25% mortalities at recommended application rate in acute oral toxicity test. In toxicity of residues on foliage test, only fenpropathrin EC treatment group showed more than 25% mortalities at 10 days after treatment at recommended application rate. It was concluded that the most toxic route to exposure for honey bee is direct contact exposure to sprayed pesticides. Safety interval for honey bee was established by concerning the results of these tests.
Effects of Root Zone Applications of Some Systemic Insecticides for Control of the Brown Planthopper, Nilaparvata lugens (
) (Homoptera: Delphacidae)
Pham, Hong-Hien ; Kim, Jong-Kyu ; Choi, Byeong-Ryeol ; Song, Yoo-Han ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 236~242
Laboratory and greenhouse experiments were conducted to evaluate the effect of root zone application of some systemic insecticides for control of the brown planthopper (BPH), Nilaparvata lugens, as one of the management option to minimize the adverse effects and maximize the efficacy of insecticide application. Five systemic insecticides, namely, carbofuran, carbosulfan, diazinon, ethoprophos and imidacloprid, as granular formulation were placed in the root zone and measured the mortality, fecundity, and nymphal survivorship of the planthopper. Diazinon and ethoprophos did not show the significant mortality of the BPH. When the BPH were inoculated at the day of carbofuran treatment, adult mortality was shown almost 100% at seven days after treatment and BPH nymphs were remained very few on rice at 25 days after treatment. When carbofuran were placed 10 days before the BPH inoculation, it showed almost 100% adult mortality after one day, and no nymphs were found until 25 day after inoculation. Efficacy of carbofuran on BPH when applied in 10 day-old rice was higher than in 30 day-old rice. These results indicated that the root zone application of carbofuran can control N. lugens effectively with less adverse effect to the natural enemies inhabited on rice plants.
Insecticidal Potential of Methanol Extract and Its Fractions from Fig (Ficus carica L.) Leaves
Chon, Sang-Uk ; Kim, Do-Ik ; Kang, Kyung-Su ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 243~248
The present research was conducted to determine insecticidal activity of methanol extract and its fractions from the fig (Ficus carica L.) leaves grown under different cropping conditions, glasshouse, plastic house, and outdoor. Methanol extracts from fig loaves grown at outdoor showed higher insecticidal activity (80 to 89%) against Tetranychus urticae than those at plastic house or glass house. Especially ethylacetate and hexane fractions from methanol extracts of fig leaves grown at outdoor exhibited the highest insecticidal activity against Tetranychus urticae, showing 92% and 90% control, respectively. The results suggest that methanol extract and its fractions from outdoor-grown fig leaves had the potent insecticidal activity as a plant-based insect control mean.
Selective Toxicity of Three Acaricides to the Predatory Mite, Neoseiulus womersleyi and its Prey, Tetranychus urticae (Acari: Phytoseiidae, Tetranychidae)
Cheon, Geum-Su ; Paik, Chae-Hoon ; Kim, Sang-Soo ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 249~255
The comparative toxicity of recommended rates of three acaricides, fluacrypyrim, cyflumetofen and spiromesifen to the predatory mite, Neoseiulus womersleyi and its prey, Tetranychus urticae was bioassayed in the laboratory. Fluacrypyrim and cyflumetofen were much less toxic to adult females of N. womersleyi than to those of T. urticae. Adult female predators treated with these two acaricides produced
as many eggs as did control females. Fluacrypyrim and cyflumetofen did not affect the hatch of N. womersleyi eggs or the development of surviving immature predators, and
of immature predators reached adulthood. Spiromesifen at its treated concentration did not significantly affect the survival and reproduction of adult female predators but caused 100% mortality in larvae of N. womersleyi. Adult female predators survived on a diet of spider mites treated with fluacrypyrim and cyflumetofen, and their fecundity was not significantly affected. Moreover, immature predators developed normally on prey treated with these two acaricides. The results indicate that fluacrypyrim and cyflumetofen are promising candidates for use in integrated mite management programs where N womersleyi is the major natural enemy.
Attractants and Trap Development for Ussur Brown Katydid, Paratlanticus ussuriensis (Orthoptera : Tettigoniidae)
Noh, Doo-Jin ; Yang, Jeong-Oh ; Moon, Sang-Rae ; Yoon, Chang-Mann ; Kang, Shin-Ho ; Ahn, Ki-Su ; Kim, Gil-Hah ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 256~261
Recently, Ussur brown katydid outbreaks caused a serious pest problem in areas of Yeongdong, Chungbuk. This study was performed to control the pest with environment-friendly method. Trap was made of PET plastic bottles that easily found near farmhouse. Attractant materials such as oak (Quercus acutissima) leaf, fruits (peach, apple, grapefruit and pear) sarcocarp or its juices, rice wine (makgeolli) and fish meal were directly applied into the manufactured trap and investigated for the attraction efficacy compared with the funnel trap. During one day, manufactured trap (fish trap) attracted the Ussur brown katydid more than funnel trap. The efficacy of attractant materials were as follows: peach juice (32.7 adults) > rice wine+fish meal (31.3 adults) > rice wine (27.0 adults) > pear juice (19.0 adults) > apple juice (17.2 adults) > fish meal (16.7 adults) > grapefruit juice (14.4 adults) > oak leaf (2.3 adults). The attractive efficacy of fruit juices to ussur brown katydid was more than fruit carcocarps, and the trap hangover 1m in height more than that on ground. The composition of rice wine and fish meal prolonged its efficacy when treated with disinfectant.
Susceptibility of Pine Sawyer, Monochamus saltuarius Adults (Coleoptera: Cerambycidae) to Commercially Registered Insecticides
Han, Ju-Hwan ; You, Jong-Hyun ; Kim, Eun-Hee ; Yang, Jeong-Oh ; Noh, Doo-Jin ; Yoon, Chang-Mann ; Kim, Gil-Hah ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 262~269
This study was performed to investigate the toxicity of 39 registered insecticides to the susceptibility, systemic effect, and residual effect and control effect against Pine sawyer beetle, Monochamus saltuarius. Eleven kinds of chemicals such as fenitrothion, fenthion, phenthoate, phosphamidon, dinotefuran, actamiprid, clothianidin, thiacloprid, thiamethoxam, esfenvalerate+fenitrothion, and fipronil were showed 100% insecticidal activity both in body spray and twig dipping bioassay. Among these chemicals, fenitrothion and fenthion were showed 100% insecticidal activity when sprayed at 4000 times diluted solutions, and phenthoate, thiacloprid, thiamethoxam and fipronil were showed 100% insecticidal activity when sprayed at 2000 times diluted solution. Root systemic effect was showed 100% mortality in phosphamidon, clothianidin, thiamethoxam, and 77.7% in thiacloprid. In residual effect, fenitrothion and thiamethoxam were showed 80% mortality fifteen days after treatment (DAT), and fenthion, phosphamidon, clothianidin were showed 80% mortality ten DAT, fenitrothion, thiamethoxam, fipronil showed 100% mortality in seven DAT, thiacloprid was showed 100% mortality in three DAT. Fenthion and phenthoate were showed 100% mortality one DAT. In the control effect, 6 kinds of chemicals were showed 100% mortality one DAT and all chemicals showed 100% mortality three DAT.
The Change of Resistance of Phytophthora infestans to Metalaxyl and the Relationship with the Pathogenicity on Pepper Plants
Yeon, Cho-Long ; Lee, Soo-Min ; Kim, Sun-Bo ; Min, Gi-Young ; Kim, Heung-Tae ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 270~276
Through the agar dilution method on V-8 juice agar, sensitivity of Phytophthora capsici causing pepper Phytophthora blight to metalaxyl was investigated by using isolates obtained from infected pepper plants during 3 years from 2005 to 2007. By the lapse of time,
value to metalaxyl was decreased, showing 1.45, 0.83, and
in 2005, 2006, and 2007. None of 2007 isolates was found to be resistant to metalaxyl. Compared the sensitivity of P. capsici isolates to metalaxyl with those to mandipropamid and dimethomorph, there is not a cross resistance response between metalaxyl and mandipropamid/dimethomorph. The resistance to metalaxyl in pepper Phytophthora blight pathogen was not related with the mycelial growth on V-8 agar medium and the pathogenicity on pepper plants.
Detection for the Resistance of Fusarium spp. Isolated from Rice Seeds to Prochloraz and Cross-resistance to Other Fungicides Inhibiting Sterol Biosynthesis
Shin, Myeong-Uk ; Kang, Hyo-Jung ; Lee, Yong-Hwan ; Kim, Heung-Tae ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 277~282
To assess the resistance to prochloraz,
values of Fusarium isolates obtained from rice seed were investigated through the agar dilution method.
value of 36 isolates of Fusarium spp. to prochloraz ranged from 0.020 to
with an average of
. According to the species of Fusarium, the average
value was fluctuated;
for F. moniliformis,
for F. proliferatum and
for F. fujikuroi. The resistant baseline was decided at
to determine if the isolate was resistant to prochloraz or not. Based on the resistant baseline, the ratio of resistant isolates was 14%. There was no correlation between the resistance to prochloraz and the pathogenicity of Fusarium spp. on rice seedlings. The resistant isolates of F. fujikuroi did not show the cross-resistance to other sterol biosynthesis inhibiting fungicides, triflumizole, hexaconazole, difenoconazole and tebuconazole.
Enhanced Pathogenicity of Baculovirus Using Immunosuppressive Genes Derived From Cotesia plutellae Bracovirus
Kim, Yong-Gyun ; Kwon, Bo-Won ; Bae, Sung-Woo ; Choi, Jai-Young ; Je, Yeon-Ho ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 283~290
Baculoviruses have been used to control some serious lepidopteran pests. However, their narrow target insect spectrum and slow efficacy are main limitations to be used in various applications. This study introduces a technique to overcome these limitations by inhibiting insect immune defence to enhance the viral pathogenicity. Polydnaviruses are an insect DNA virus group and symbiotic to some ichneumonid and braconid endoparasitoids. Cotesia plutellae bracovirus (CpBV) is a braconid polydnavirus and encodes several immunosuppressive genes. We selected seven CpBV genes and recombined them to wild type Autographa California multiple nucleopolyhedrovirus (AcNPV). A bioassay of these seven recombinants indicated that most recombinants had similar or superior efficacy to wild type AcNPV against beet armyworm, Spodoptera exigua, and diamondback moth, Plutella xylostella. Recombinant AcNPV with CpBV-ELP was the most potent in terms of lethal time by shortening more than 2 days compared to wild type AcNPV. This recombinant was further proved in its dose-dependent pathogenicity and its efficacy by spray application on S. exigua infesting cabbage cultivated in pots. We discussed the efficacy of CpBV-ELP recombinant AcNPV in terms of suppressing antiviral activity of target insects.
Antifungal Activity of Streptomyces pad anus isolate TH04 against Monilinia fructicola, Brown rot Fungus on Stone-fruits
Lim, Tae-Heon ; Choi, Yong-Hwa ; Lee, Dong-Woon ; Han, Sang-Sub ; Cha, Byeong-Jin ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 291~294
The Streptomyces padanus isolate TH04, isolated from mummified peaches, showed strong antifungal activity to Monilinia fructicola. The inhibition activity of the isolate TH04 to mycelial growth and spore germination at 1% concentration of sub-antifungal powder made from culture suspension (CS) was ranged from 79.8% to 81.0% and from 73.9% to 75.8% to M. fructicola four strains, respectively. In the test of antifungal activity in mixed culture of the isolate and M. fructicola, inhibition rate was 7.5%, 86.8% and 94.0% in 0.01, 0.1, and 1% concentration of CS containing bacterial cell of the isolate, respectively. On apples (cultivar; Fuji), the control values of the isolate TH04 crude filtrates (0.1 and 1%) were 85.9% and 100%, respectively. The results suggest that the isolate TH04 indicate development possibility as biocontrol agent of brown rot caused by M. fructicola with the study on delivery method and fermentation condition to produce an antifungal compound.
A Synthesis of New Fluorine-containing Phenylformamidines and Their Insecticidal Activities
Lee, Dong-Guk ; Chung, Kun-Hoe ; Ko, Young-Kwan ; Ryu, Jae-Wook ; Woo, Jae-Chun ; Koo, Dong-Wan ; Choi, Yong-Ho ; Park, No-Joong ; Hong, Mi-Sook ; Kim, Tae-Joon ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 295~301
Phenylformamidines are well known as insecticides for their specific activity against the insects. It has now been established that they show insecticidal activity as agonists on the octopamine receptor which is located in the synapse membrane. In this study we tried to test the effect of fluorine substituted aromatic formamidines and 1,3,5-triazapenta-1,4-dienes. Among the compounds, 2h, 2k, 21, 3g, 3h, 3k showed good activity against mite and aphid and 4f and 4g showed high activity against mite.
Fumigant Toxicity of Essentail Oils and Agricultural Materials against Moechotypa diphysis Pascoe (Coleoptera: Cerambycidae)
Ahn, Hee-Geun ; Noh, Doo-Jin ; Yang, Jeong-Oh ; Yoon, Chang-Mann ; Kim, Gil-Hah ;
The Korean Journal of Pesticide Science, volume 12, issue 3, 2008, Pages 302~306
This study was performed to investigate the contact toxicity, fumigant toxicity, and synergistic effect using agricultural materials (AM) when mixed with selected essential oils against oak longicorn beetle, Moechotypa diphysis. Four kinds of AM, namely, chungkiller, ungsalta, jinap, purunjunsa showed 100% contact toxicity at one day after treatment. Subsequently, four AM was tested the fumigant toxicity during 24 hours. At concentration of 1 mL, jinap and chungkiller showed 100% mortality at 3 hr after treatment, prunjunsa and ungsalta showed 100% mortality at 6 hr after treatment. When applicate to the small vinyl bag (15 L), all AM (50 mL/15 L) was showed 100% mortality. Jinap showed the mortality 100% when mixed pennyroyal oil with the ratio of 5+1. It was higher than single treatment.