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Acaricidal activity of 63 commercial pesticides agaisnt Haemaphysalis logicornis (Acari: Ixodidae)
Geun-Ho Park,Sung Il Kim,Sung Woo Cho,Seung-Ju Lee,Geon-Hui Lee,Sun-Ran Cho,Soeun Shin,Hyun-Na Koo,Hyun Kyung Kim,Gil-Hah Kim 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.10
Acaricidal activities of 63 commecial pesticides against the longhorned tick, H. logicornis were investigated. Twenty-two pesticides (4 cabamates, 5 organophophates, 9 pyrethroids, 1 octopamine receptor agonists, 1 diamides, and 1 unknown) against adults H. logicornis showed >80% mortalities after 72 h of treatment. The residual effect of 22 pesticides was investigated at 1, 2, 3, 7, and 10 day intervals on grass for H. logicornis adults and nymphs. Eight and twenty pesticides in H. logicornis adults and nymphs showed >80% acaricidal activity at 3 days after the treatment, respectively. 7 days after the treatment, H. logicornis adults showed <60% acaricidal activity in all pesticides, but 7 pesticides (benfuracarb, gamma cyhalothrin, cypermethrin, lammda cyhalothrin, fenvalerate, cyantraniliprole, fluxametamide) showed >80% acaricidal activity in nymphs. all pesticides exhibited <60% acaricidal activity after 10 days of treatment both adults and mymphs, except benfuracarb showed 96.7% mortality in H. logicornis nymph.
Geun-Ho Park,Seung-Ju Lee,Dae-Hoon Jeong,Won-Jin Kang,Yejin Kyung,Jae-Seon Lee,Sun-Ran Cho,Hyun-Na Koo,Hyun-Kyung Kim,Gil-Hah Kim 한국응용곤충학회 2017 한국응용곤충학회 학술대회논문집 Vol.2017 No.10
The distribution of mosquitoes collected in Cheongju area in 2016 and 2017 were compared. The collection sites wereestablished from residential area, migratory bird sanctuary, and cattle feedlot using BL trap and BG trap. Culex pipienswere the most collected in residential area, and Aedes vexans were the most collected in migratory bird sanctuary andcattle feedlot in both years. BG trap was more collected than BL trap in residential area and migratory bird sanctuary.However, cattle feedlot was more collected in BL trap. A variety of mosquito species were collected from BG trap thanBL trap. However, the number of Anopheles sinensis collected in cattle feedlot showed significant differences betweenBL trap and BG trap. Based on the results of this study, it is considered that effective monitoring of mosquitoes mightbe done by using appropriate trap type according to the region
Evaluation of fumigation activity of carbonyl sulfide to red flour beetle (Tribolium castaneum)
Geun Ho Jeong,Sung Woo Cho,Hyun-Na Koo,Hyun Kyung Kim,Bongsu Kim,Jeongoh Yang,Gil-Hah Kim 한국응용곤충학회 2019 한국응용곤충학회 학술대회논문집 Vol.2019 No.04
The fumigation toxicity of carbonyl sulfide to T. castaneum as a storage grain pest was evaluated. Carbonyl sulfide (COS) is registered in Australia for microorganism present in soil, root and fertilizer. the fumigation activity of carbonyl sulfide was investigated in 12 L desiccator for 24 h exposure to eggs, larvae, pupae, adults of T. castaneum. Eggs and pupae were showed 87.3% and 95.6% mortality for 25 mg/L of COS, respectively. Larvae and adults were investigated with 80.0% and 100.0% mortality at 15 mg/L treatment, respectively. Therefore, the eggs of T. castaneum showed the highest tolerance to COS.
Fumigation activity of phosphine on red flour beetle (Tribolium castaneum)
Geun Ho Jeong,Sung Woo Cho,Hyun-Na Koo,Hyun Kyung Kim,Bongsu Kim,Jeongoh Yang,Gil-Hah Kim 한국응용곤충학회 2019 한국응용곤충학회 학술대회논문집 Vol.2019 No.04
The fumigation activity of phosphine (PH3) to T. castaneum as a storage grain pest was evaluated. The lethal concentration time (LCT) value of each developmental stage (egg, early larva, late larva, pupa and adult) of T. castaneum was analyzed in 12 L desiccator. At the T. castaneum larva stages, exposure for 4 h showed low LCT value, especially in early stage larvae (LCT99 = 0.32 mg·h/L) which is very high susceptibility to PH3. However, T. castaneum eggs were observed very high tolerance to PH3 at LCT99 77.47 mg·h/L. Therefore, the fumigant activity of PH3 against T. castaneum can be found to be significantly different depending on developmental stage.
Koo, Song Yi,Cha, Kwang Hyun,Song, Dae-Geun,Lee, Dong-Un,Pan, Cheol-Ho The Korean Society for Applied Biological Chemistr 2012 Applied Biological Chemistry (Appl Biol Chem) Vol.55 No.5
High hydrostatic pressure (HHP) treatment was used to increase the concentration of sulforaphane in Brussels sprout, a cruciferous vegetable known to have health benefits. The highest concentration of sulforaphane was $1021.8{\mu}mol$ per kg fresh weight of Brussels sprouts after HHP treatment at 500 MPa, which corresponded to a 317% increase compared to the HHP-untreated control.
Amplification of Sulforaphane Content in Red Cabbage by Pressure and Temperature Treatments
Koo, Song-Yi,Cha, Kwang-Hyun,Song, Dae-Geun,Chung, Dong-Hwa,Pan, Cheol-Ho The Korean Society for Applied Biological Chemistr 2011 Applied Biological Chemistry (Appl Biol Chem) Vol.54 No.2
Red cabbage, a Brassica vegetable, has glucoraphanin that is hydrolyzed by myrosinase to form sulforaphane, which has received attention due to its cancer chemopreventive activity. High hydrostatic pressure (HHP) treatment (100~400MPa) and subsequent incubation ($20{\sim}80^{\circ}C$) were employed to amplify health beneficial sulforaphane content in red cabbage. The highest quantity of sulforaphane was $99.7{\mu}mol/kg$ fresh weight from HHP treatment at 400MPa, followed by standing at $60^{\circ}C$. Cytotoxicity was determined to evaluate the side effect of HHP-treated red cabbage.