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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 6, Issue 4 - Dec 2002
Volume 6, Issue 3 - Sep 2002
Volume 6, Issue 2 - Jun 2002
Volume 6, Issue 1 - Mar 2002
Selecting the target year
Recent trend of chemical studies of fungicide in China
Jiang, Mingliang ;
The Korean Journal of Pesticide Science, volume 6, issue 1, 2002, Pages 1~8
Recent progress of several kinds of compounds which have been synthesized or isolated from natural fungi for screening or conducting test as agricultural fungicides as well as some formulations for wood stain and decay control have been reviewed in this paper in China. Comments were pointed for Chinas further research and development of fungicides as well as pesticides.
The Insecticide Constituents of Several Celastraceae Plants
Wang, MingAn ; Wu, WenJun ;
The Korean Journal of Pesticide Science, volume 6, issue 1, 2002, Pages 9~15
The insecticide constituents of several Celastraceae family plants including Celastrus angulatus, Celastrus orbiculatus, Celastrus flagellaris, Euonymus verrucosides, Euonymus forunei and Euonymus phellomana were studied by bioassay-guided fractionation. All structures of sesquiterpene polyol esters and alkaloids have been elucidated by UV, IR, MS, NMR and x-ray diffraction evidences. These compounds exhibited insecticidal, antifeedant and narcotic activities against Mythimna separata.
Review of the study on the surfactant-induced foliar uptake of pesticide
Yu, Ju-Hyun ; Cho, Kwang-Yun ; Kim, Jeong-Han ;
The Korean Journal of Pesticide Science, volume 6, issue 1, 2002, Pages 16~24
Research trends in the measurement of foliar uptake of pesticides and the recently proposed action mechanism of the surfactant-induced uptake of pesticides were reviewed with the related reports and studies. Major techniques used in those fields are bioassay, radiotracer techniques with leaves or cuticular membrane. Recently, a new method using Congo Red as a tracer was proposed. The limiting factor in the pesticides uptake into leaves is the waxy layer which consists of the epicuticular and cuticular wax. Physico-chemical parameters such as molar volume, water solubility and partition coefficient of pesticides have limited influences on the pesticide uptake into leaves. Polydisperse ethoxylated fatty alcohol surfactants are well known as the good activator for many pesticides. It is now generally agreed that uptake activation is not related to the intrinsic surface active properties of surfactants such as surface activity, solvent property, humectancy and critical micelle concentration. Recent studies using ESR-spectroscopy revealed that the surfactants have an unspecific plasticising effect on the molecular structure of the wax and cuticular matrix, leading to increased mobilities of pesticides. Penetration of surfactants into waxy layer altered the pesticide mobility in wax and the partition coefficient of pesticide, and then the pesticides penetration into leaves was enhanced temporally. The enhancing effect of surfactant could be significantly different depending on the carbon number of aliphatic moiety and the number of ethoxy group in polyoxyethylene chain of surfactants. It is suggested that the rate of penetration of surfactants should have a significant relationship with the rate of penetration of pesticides.
Quantitative Structure Toxicity Relationships (QSTR) of New Herbicidal N-phenyl-3,4-dimethylphthalide Derivatives
Sung, Nack-Do ; Yang, Sook-Young ; Kang, Hak-Sik ;
The Korean Journal of Pesticide Science, volume 6, issue 1, 2002, Pages 25~30
Quantitative structure-toxicity relationships (QSTRs) between various physicochemical parameters of substituents in new herbicidal N-phenyl-3,4-dimethylphthalimide derivatives and their discriminate score (DS) for chronic and acute toxicities against mouse and rat evaluated using TOPKAT calculation were discussed quantitatively. From the basis on the findings, it was shown that carcinogenicities of female was higher than that of male and mouse had higher tendency than rat. The STR analyses results of Hansch-Fujita type equations suggested that mouse (female & male) and rat male except rat female are dependent on LUMO energy commonly in carcinogenicity. The selective carcinogenicity factor of two species between male mouse and female mouse is dependent on optimal value (ca.
) for length of
-substituent mainly. According to Free-Wilson approach, in the case of rat male, alkyl and aryl substituents were superior and in the other case, contribution of fluoro group substituents were superior to chronic toxicity.
Inhibition of glutathion-S-transferase and amidase by impurities in technical grade benfuracarb
Yum, Chang-Sub ; Kim, Song-Mun ; Yu, Ji-Sook ; Hur, Jang-Hyun ;
The Korean Journal of Pesticide Science, volume 6, issue 1, 2002, Pages 31~35
Objectives of this study were to determine if impurities in technical grade benfuracarb inhibit glutathione-S-transferase and amidase and to identify structures of impurities in technical grade benfuracarb. Technical grade benfuracarb, active ingredient, and impurity inhibited glutathione-S-transferase, and their
, respectively. Such inhibition, however, was not higher than that by ethacrynic acid, a selective inhibitor to GST. Technical grade benfuracarb, active ingredient, and impurity also inhibited amidase, and their
, respectively. Our results show that the inhibition of both detoxifying enzymes by impurities in benfuracarb was 10-fold lower than that by active ingredient, suggesting that both active ingredient and impurities are involved in the inhibition of both detoxifying enzymes. Of four impurities (IM
) that were separated from technical grade benfuracarb, IM 2 and IM 3 inhibited GST and amidase. Based on data from IR,
-NMR and MS, it was determined that IM 2 is ethyl-N-isopropylamino propionate and IM 3 is ethyl-N-isopropyl-N(chlorosulfenyl)aminopropionate.
Regrowth Patterns of the Perennial Weeds Treated with Sulfonylureas and Starch Degradation in the Rhizome
Hwang, I.T. ; Lee, K.H. ; Hong, K.S. ; Kim, J.S. ; Lee, B.H. ; Cho, K.Y. ;
The Korean Journal of Pesticide Science, volume 6, issue 1, 2002, Pages 36~41
Characteristics of regrowth and starch degradation in perennial weed rhizomes were investigated in a greenhouse. Cyperus serotinus started regrowth at 24 days after treatment of 1.25 g ai/ha of pyrazosulfuron-ethyl. The regrowth of Sagittaria trifolia, Eleocharis kuroguwai, and S. pygmaea required
days, and Potamogeton distinctus regrew at 55 days after treatment of 1.25 g ai/ha of pyrazosulfuron-ethyl. However, all of 5 perennial weeds hardly regrew until 45 days after treatment more than 5 g ai/ha of pyrazosulfuron-ethyl. Regrowth of C. serotinus 4-node rhizomes was 2 times higher than 2-node rhizomes, and
of E. kuroguwai large tubers regrew faster than
of small tubers treated with bensulfuron-methyl. Regrowth of C. serotinus was enhanced with delayed application of bensulfuron-methyl, however, 2-leaf stage of E. kuroguwai plants regrew better than 3 leaf stage of plants when treated with equal volume of bensulfuron-methyl. The critical periods of S. trifolia and E. kuroguwai growth depending upon the rhizome detachment were 12 and 18 days after sprouting, respectively. The starch stacked in the S. trifolia and E. kuroguwai tubers were exhausted at 18 and 27 days after sprouting, respectively. The highest level of sugar contents was showed at 9 days after sprouting in S. trifolia, and 18 days after sprouting in E. kuroguwai.
Identification and fungicide responses of Phytophthora cactorum isolated from lily growing Daekwallyong alpine area
Kim, Byung-Sup ; Ahn, Jong-Woong ;
The Korean Journal of Pesticide Science, volume 6, issue 1, 2002, Pages 42~44
A very destructive lily disease was occurred at Daekwallyong alpine areas in 1999. We have performed experiments to identify the causal pathogen of lily disease and to find a way to control the disease chemically. Twelve fungal isolates from the infected lily were identified as Phytophthora cactorum. Mycelial growth of all isolates were completely inhibited on potato dextrose agar with
metalaxyl. Among 11 fungicides tested,
of dimethomorph, ethaboxam, and oxadixyl inhibited mycelial growth of P. cactorum. PC-1. Therefore, spray of phenylamide fungicides such as metalaxyl and other commercial fungicides should be a effective way to control the Phytophthora blight of lily.
Synthesis and herbicidal activity of new benzenesulfonylurea derivatives possessing bicyclic ketal subgroup
Ko, Young-Kwan ; Chang, Hae-Sung ; Ryu, Jae-Wook ; Woo, Jae-Chun ; Koo, Dong-Wan ; Chung, Kun-Hoe ; Hwang, In-Taek ; Kim, Dae-Whang ;
The Korean Journal of Pesticide Science, volume 6, issue 1, 2002, Pages 45~48
New benzenesulfonylurea derivatives possessing bicyclic ketal subgroup were synthesized and shown to have interesting herbicidal activities under upland greenhouse screening.