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제주지역에서 귤응애에 대한 Petroleum Spray Oil의 방제효과 및 식물독성
김동환(Dong-Whan Kim),김광식(Kwang-Sik Kim),현재욱(Jae-Uk Hyun),강시용(Si-Yong Kang),송정흡(Jeong-Hueb Song),류기중(Key-Zung Riu) 한국농약과학회 2000 농약과학회지 Vol.4 No.4
Recently, a new developed petroleum spray oil(PSO; D-C Tron Plus<SUP>®</SUP>) has been used to control key pests in integrated pest management (IPM) system of citrus orchards in Australia. The efficacy and phytotoxicity of the PSO against the citrus red mite (Panonychus citri) were compared with conventional pesticides (e.g.Tebufenpyrad, Bifenazate and Sun spray oil) in field condition in Jeju. And under PSO mixing spray with some fungicides, the occurrence of phytotoxic symptoms on citrus leaf was investigated. All concentrations of PSO spraying (0.25%, 0.33%, 0.5% and 1.0%) were significantly suppressed the citrus red mite to similar levels of other conventional pesticides. And the spraying of PSO levels ≥0.5% was induced not only occurrence of some oil-sucked symptoms on leaf, but also increase of the dropping leaf and fruit rates. As results from mixing PSO spraying test with other fungicides, little burning on new flush shoot was founded only in PSO 1% plus FIuazinam treatment. From the results of this study, with the consideration of pesticidal efficacy and phytotoxicity, 0.25% and 0.33% PSO spraying level will be recommended for the control of citrus red mite during summer season in Jeju.
Dong-Whan Kim(김동환),Si-Yong Kang(강시용),Kwang-Sik Kim(김광식),Jae-Uk Hyun(현재욱),Jeong-Hueb Song(송정흡),Key-Zung Riu(류기중) 한국농약과학회 2001 농약과학회지 Vol.5 No.1
The efficacy of petroleum spray oil (PSO; D-C Tron Plus®) against spirea aphid(Aphis citricola) and two scales(Icerya purchasi and Planococcus cryptus) on citrus was tested in Jeju Korea. The control value of 0.33% PSO against spirea aphid was over 90% at 3 and 6 days after treatment (DAT), and then decreased to about 80% at 9 and 14 DAT. Spraying of PSO(0.33, 0.66, 1%) against cottony-cushion scale showed a much lower control value(less than 50%) during the investigation period compared to that of the conventional pesticide(Methion). When used against the scale, Planococcus Cryptus, the control value of 1% PSO was 95%, but that of 0.33% and 0.66% PSO only ranged from 50 to 80%, lower than the conventional pesticide. The results of this study, as with a previous study, suggest that spraying of 0.33% and 0.5% PSO not only controls the spirea aphid, but also reduces the density of two scales(Icerya purchasi and Planococcus cryptus) on citrus tree in Jeju, without phytotoxic damage.