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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
Selecting the target year
Comparative Molecular Field Analyses on the Fungicidal Activities of N-phenylthionocarbamate Derivatives based on Different Alignment Approaches
Sung, Nack-Do ; Soung, Min-Gyu ; You, Jae-Won ; Jang, Seok-Chan ;
The Korean Journal of Pesticide Science, volume 10, issue 3, 2006, Pages 157~164
Three dimensional quantitative structure-activity relationships (3D-QSARs) for the fungicidal activities against Rhizoctonia solani (RS) and Phytophthora capsici (PC) by N-phenyl substituents(X) of N-phenylthionocarbamate derivatives were studied quantitatively using comparative molecular field analysis (CoMFA) methodology based on different alignment approaches. Statistical quality of CoMFA models with field fit alignment were slightly higher than that of atom based fit alignment. The optimized CoMFA models (RS: RF2 & PC: PF2) were derived from field fit alignment and combination of CoMFA fields. And the statistical results of the two models showed the best predictability of the fungicidal activities based on the cross-validated value
=RS: 0.557 & PC: 0.676) and non-cross-validated value (
=RS: 0.954 & PC: 0.968), respectively. The selective fungicidal activities between two fungi were dependence upon the electrostatic field of substrate molecule. Therefore, the fungicidal activities from CoMFA contour maps showed that the fungicidal activity will be able to increased according to the modification of X-substituents on the substrate molecules.
Excavation of 3-amino-2-benzylimino-1,3-thiazolines, Selective Fungicide against Phytophthora infestans and Magnaporthe grisea
Hahn, Hoh-Gyu ; Nam, Kee-Dal ; Shin, Dong-Yoon ; Choi, Gyung-Ja ; Cho, Kwang-Yun ;
The Korean Journal of Pesticide Science, volume 10, issue 3, 2006, Pages 165~171
A new 3-amino-1,3-thiazoline chemical library was synthesized through parallel synthetic technology and in vivo antifungal activity of the compounds were investigated against the typical 6 plant diseases (100 ppm). The characteristic feature of these derivatives was that both a benzyl moiety in C-2 imino and an amino group in C-3 of 2-imino-1,3-thiazoline scaffold were substituted in the molecule respectively. Some compounds showed antifungal activity with selectivity against tomato late blight and rice blast. The fungitoxicity would be attributed to 3,4-dichlorophenyl moiety of the benzyl group.
Distribution and Mobility of Herbicide
-Molinate in a Rice-Paddy-Soil Lysimeter
Park, Byung-Jun ; Kim, Chan-Sub ; Park, Kyung-Hun ; Park, Hyeon-Ju ; Im, Geon-Jae ; Choi, Ju-Hyeon ; Shim, Jae-Han ; Ryu, Gab-Hee ;
The Korean Journal of Pesticide Science, volume 10, issue 3, 2006, Pages 172~182
This study was designed to assess molinate fate in the lysimeter by measuring the total radioactivity in the leachate, evolved
-residues in soil and rice plant. The amounts of applied
in the leachate from the lysimeter for 20 weeks were 1.05% in 2.31 pore volume (217,465 mL) at the first and 0.34% in the second year, respectively. The amount of
evolved from the lysimeter accounted for 6.47% and 0.03% of applied
in the first and second year. The
-activities in the soil layer of the lysimeter were distributed 18.0% (1st) and 13.3%(2nd) in the depth of 0 to 10 cm, 4.3 (1st) and 1.1% (2nd) in the depth of 10 to 20 cm. Most of the applied
was detected in the top 20 cm soil layer. Total
in rice plants grown at lysimeter were detected 11.46% of applied
. 11.11% in straw, 0.24% in brown rice grain, 0.08% in chaff and 0.03% in ears were distributed in the first year. Consequently, environmental fate of molinate using lysimeter simulating a paddy rice field were investigated 25.24% in soil, 11.64% in rice plant, 1.05% in leachate, 6.74% in evolved
and 0.02% in volatilized organic chemicals in the first year.
Survey on Compliance of Pesticide Registration Standard and Pesticide Usage of Paddy Rice and Leaf Vegetables in Korea
Kim, Kyung-Sun ; Kim, Kang-Ho ; Kim, Nam-Suk ; Ihm, Yang-Bin ; Lee, Hee-Dong ; Kim, Hyu-Gyung ; You, Oh-Jong ; Oh, Byung-Youl ; Im, Geon-Jae ; Ryu, Gab-Hee ;
The Korean Journal of Pesticide Science, volume 10, issue 3, 2006, Pages 183~188
A nation-wide monitoring survey was performed to look into pesticide use pattern and amount on farmers' field after the national registration of pesticides from 2003 to 2004. Tow hundred ninety two leading farmers involved in the survey were chosen from main cultivating regions of targeted crops in consideration with area. Most farmers involved in the survey follow the safe use guideline of pesticides, while their information to select and making-decision for purchasing pesticides were done according to the recommendation of mainly pesticide market dealers or agricultural cooperative dealers. Used amount of pesticide per unit cropping area was surveyed as 5.51 on paddy, 3.91 on field cabbage, 2.93 on greenhouse cabbage, 0.76 on lettuce, 0.55 on spinach, 1.34 on perilla leaf, 4.89 on leek and 0.42 kg
on young radish. As compound with those surveyed from 1999 to 2000, the pesticide amounts used for rice, lettuce and perilla leaf were reduced while that for cabbage was increased.
Selection of Optimal Culture Media for Developing Standard Ecological Toxicity Test Methods using Korean Freshwater Cladocera
Kim, Byung-Seok ; Park, Yoen-Ki ; Park, Kyung-Hun ; Kim, Jin-Kyung ; Shin, Jin-Sup ; Kim, Jin-Hwa ; Yoon, Seong-Myeong ; Ahn, Young-Joon ;
The Korean Journal of Pesticide Science, volume 10, issue 3, 2006, Pages 189~195
The purpose of the current study was to develop a standard method to assess the ecological effect of pesticides using the representative Korean freshwater cladocerans. The indigenous cladocerans, Daphnia obtusa, Daphnia sp., Moina macrocopa, Simocephalus vetulus and Daphnia magna formally endorsed by the major international organizations were tested to select optimal culture media in laboratory condition. All of the Korean water flea tested showed good growth and fecundity in the moderately hard water (
ranged 80 to 100 mg
) and soft water (
ranged 40 to 48 mg
). However, considering that the total hardness of fresh water collected from 5 rivers ranged from 60.2 to 127.2 mg
) and Ca deficiency could be a major determinant of species success and community structure among crustacean zooplankton, the present study suggests that the optimal water hardness for growing Daphnia sp., Daphnia obtusa, Moina macrocopa and Simocephalus vetulus is
Comparison of Life Cycle of Several Korean Native Freshwater Cladocerans in Laboratory Culture Conditions
Kim, Byung-Seok ; Park, Yoen-Ki ; Park, Kyung-Hun ; Shin, Jin-Sup ; Kim, Jin-Hwa ; Yoon, Seong-Myeong ; Ahn, Young-Joon ;
The Korean Journal of Pesticide Science, volume 10, issue 3, 2006, Pages 196~200
In this study we investigated fecundity and survivorship of four staple Korean freshwater cladocerans for their whole life to develop a new standard method used for ecological risk assessment of pesticide. The tested Korean freshwater cladocerans were Daphnia obtusa, Daphnia sp., Moina macrocopa and Simocephalus vetulus. In addition, standard test species, Daphnia magna endorsed formally by the major international organizations was tested together in order to compare with the reproductive characteristics of Korean cladocerans. A total of 358 young was produced by D. magna, whereas, 297 young was reduced by Daphnia sp. throughout the entire life. The average life span of Daphnia magna was 50 days much longer than any other Korean species. Nevertheless all of the Korean water flea tested showed good fecundity, produced over 60 young for 21 days as the validation criterion for reproduction toxicity test in Ecological Effects Test Guidelines published by USEPA. Especially Moina macrocopa produced their first brood in 4 days. Therefore 10 day reproduction test with Moina macrocopa may be an alternative good method to save cost and time to elucidating the effects of hazardous substances on the reproduction of aquatic invertebrates.
Phytopathogenic Activities of Essential Oils and Their Main Compounds
Choi, Won-Sik ; Kim, Kwan-Young ; Jang, Do-Yeon ; Um, Dae-Yong ; Kim, Tae-Jun ; Jung, Bong-Jin ;
The Korean Journal of Pesticide Science, volume 10, issue 3, 2006, Pages 201~209
Antifungal activities of 43 different plant oils were evaluated against different phytopathogenic fungi. Thyme oil showed highest antifungal activity among the tested oils. The major of thyme oil were found to be thymol, carvacrol, bomeol, p-cymene and linalool. Thymol and carvacrol were found to be responsible for thyme's antifungal activity. The spore germination assay was conducted on Alternaria mail and Botrytis cinerea. Thymol and carvacrol strongly inhibited spore germination in the fungi test. In addition, thymol and carvacrol showed a curative effectiveness to gray mold disease on cucumber crop. The antifungal activities of alkylphenol and alkylaniline compounds, which has similar molecular structure to that of thymol or cavacrol, were also tested. It was found that alkylphenol compounds also show higher inhibition to spore germination. Thus, thymol, carvacrol and alkylphenol compounds can be used an potent antifungal agents.
Enhancement of Insecticidal Activity of the Acetamiprid Soluble Concentrate using a Photostabilizer
Kim, Hyeong-Min ; Lee, Weon-Kee ; Kim, Jong-Kwan ; Seok, Chang-Su ; Lee, Chang-Hyuk ; Yu, Yong-Man ; Hwang, In-Cheon ;
The Korean Journal of Pesticide Science, volume 10, issue 3, 2006, Pages 210~217
The study was carried out to select the effective adjuvant as a photostabilizer for acetamiprid 5% SL(soluble concentrate) and to find its optimum content by using chemical and biological methods. Adjuvants used for the study were KS1 and KS2. Photodegradation test, insecticidal efficacies and residual analysis for the study were investigated. Although photodegradation rate of acetamiprid SL was decreased by addition of KS1 and KS2, the difference between KS1 and KS2 was not significant. As KS2 showed better efficacies against the cotton aphid (Aphis gossypii) and higher amount of residue on pepper than KS1, KS2 was selected as a photostabilizer for acetamiprid SL. Acetamipid SL with KS2 showed lower photodegradation rate, better efficacies against the cotton aphid (Aphis gossypii) and higher amount of residue on pepper as content of KS2 in acetamiprid SL was decreased. Therefore, it was concluded that the optimum content of KS2 was 0.1%. These results have demonstrated that the selected adjuvant could be used to enhance insecticidal activity and reduce spay dose of insecticide by protecting its photodegradation.
Toxicity Evaluation of Agricultural Insecticides on Workers of Pharaoh Ant, Monomorium pharaonis (Hyme-noptera : Formicidae)
Kang, Shin-Ho ; Han, Jong-Been ; Park, Shin-Sub ; Kim, Gil-Hah ;
The Korean Journal of Pesticide Science, volume 10, issue 3, 2006, Pages 218~224
Toxicities of 34 agricultural insecticides was tested against Monomorium pharaonis workers by diet dipping method. Ten insecticides among them, bifenthrin, chlorpyrifos, chlorpyrifos-methyl, cypermethrin, dichlorvos, fenthion, fenitrothion, methidathion, pirimifos-methyl, and phenthoate showed 100% rapid mortality.
(ppm) values of selected insecticides were appeared on the order of pirimifos-methyl (0.33), chlorpyrifos-methyl (0.76), phenthoate (1.70), bifenthrin (1.78), dichlorvos (2.50), cypermethrin (9.92), chlorpyrifos (22.21), fenitrothion (36.58), fenthion (40.96), and methidathion (64.34).
(day) values by diet dipping method showed that dichlorvos, benfuracarb and cypermethrin acted more rapid than boric acid and hydramethylnon. The values of the former three were 0.25, 0.38 and 0.27 days, and those of the latter two were 3.4 and 2.6 days, respectively. In persistance effect tests, chlorpyrifos-methyl, fenthion and methidathion showed over 90% insecticidal activity for 13 days.
Herbicidal Activity of Korean Native Plants (IV)
Kim, Song-Mun ;
The Korean Journal of Pesticide Science, volume 10, issue 3, 2006, Pages 225~229
This study was conducted to screen herbicidal activity of Korean native plants which could be used for the development of new natural herbicides. Fifty-five plants were collected from Wan and Jeju islands in Korea and their methanol extracts were obtained. Herbicidal activity of methanol extracts were determined by seed bioassay using rape (Brassica napus L.) seedlings. Among fifty-five species, five plants were highly herbicidal (
): Clematis apiifolia A. P. DC.; (811
), Euscaphis japonica (THUNB.) KANITZ (867
), Hibiscus mutabilis L. (988
), Phyllostachys pubescens MAZEL (778
), Yucca recurvifolia (857
). Twenty-seven plants were shown moderately herbicidal (1,000 <
), however, twenty-three plants were not shown any herbicidal activity.
Antibacterial Activities against Plant Pathogens and Identification of Agrimol B from Agrimonia pilosa LEDEB
Chun, Sung-Bong ; Yang, Ba-Rom ; Choi, Chun-Whan ; Kim, Ik-Soo ; Park, Kyung-Seok ;
The Korean Journal of Pesticide Science, volume 10, issue 3, 2006, Pages 230~236
Eighty-five percent methanol extract of Agrimonia pilosa has antibacterial activity against Pseudomonas syringae pv. lacrymans (bacterial leaf spot pathogen), Ralstonia solanacearum (tomato bacterial wilt pathogen) and Pseudomonas syringae pv. tabaci (Tobacco wild fire pathogen.). The active substance was purified by silica gel column chromatography and HPLC. The molecular weight of the active compound was determined by LC-Mass as 687.2. With NMR analysis, the active substance was identified as Agrimol B.