Comparative toxicity of acaricides to<i>Tetranychus merganser</i>Boudreaux and<i>Tetranychus kanzawai</i>Kishida (Acari: Tetranychidae)

Ullah, Mohammad Shaef; Moriya, D.; Kongchuensin, Manita; Konvipasruang, Ploychompoo; Gotoh, Tetsuo

doi:10.1080/01647954.2010.525531

Cited by 20 publications

(9 citation statements)

References 19 publications

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“…Cyflumetofen was a relatively novel acaricide active against spider mites and phytophagous mites at all development stages suitable for use in integrated pest management systems without cross‐resistance to existing acaricides . Meanwhile, cyflumetofen was safe to predatory phytoseiidae mites as well as other nontarget organisms, it was used for the control of a wide range of pets in fruits, ornamentals, vegetables, and other crops in Japan, and the use of cyflumetofen has increased dramatically in recent years .…”

Section: Introductionmentioning

confidence: 99%

Determination of cyflumetofen residue in water, soil, and fruits by modified quick, easy, cheap, effective, rugged, and safe method coupled to gas chromatography/tandem mass spectrometry

Liu

Dong

et al. 2012

J of Separation Science

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A new, highly sensitive, and selective method was developed for the determination of the cyflumetofen residue in water, soil, and fruits by using gas chromatography quadruple mass spectrometry. The target compound was extracted using acetonitrile and then cleaned up using dispersive solid-phase extraction with primary and secondary amine and graphitized carbon black, and optionally by a freezing-out cleanup step. The matrix-matched standards gave satisfactory recoveries and relative standard deviation values in different matrices at three fortified levels (0.05, 0.5, and 1.0 mg kg(-1) ). The overall average recoveries for this method in water, soil, and all fruits matrix at three fortified levels ranged from 76.3 to 101.5% with relative standard deviations in the range of 1.2-11.8% (n = 5). The calculated limits of detection and quantification were typically below 0.005 and 0.015 μg kg(-1), which were much lower than the maximum residue levels established by Japanese Positive List. This study provides a theoretical basis for China to draw up maximum residue level and analytical method for cyflumetofen acaricide in different fruits.

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Section: Introductionmentioning

confidence: 99%

Determination of cyflumetofen residue in water, soil, and fruits by modified quick, easy, cheap, effective, rugged, and safe method coupled to gas chromatography/tandem mass spectrometry

Liu

Dong

et al. 2012

J of Separation Science

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“…It is also commercialized in the racemic form. According to the literature investigation, only a few articles published for cyflumetofen were mainly concerned with the chemical synthesis , acaricidal efficiency , toxicity to nontargeted organisms , and the pesticide resistance development on the target mite . To date, no work about the analytical method for determining the cyflumetofen residue has been reported, especially the relevant residue analysis on the level of enantiomers.…”

Section: Introductionmentioning

confidence: 99%

Chiral determination of a novel acaricide cyflumetofen enantiomers in cucumber, tomato, and apple by HPLC

Chen

Dong

Liu

et al. 2012

J of Separation Science

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A simple chiral analytical method was developed for the enantiomeric determination of cyflumetofen in cucumber, tomato, and apple by normal-phase HPLC. The effects of mobile phase composition and column temperature on the enantioseparation were evaluated. Excellent separation was achieved at 25°C on a Chiralpak AD-H column, with a mixture of n-hexane and 2-propanol (95:5, v/v) as mobile phase at a flow rate of 1.0 mL/min detecting at 234 nm. The resolution of cyflumetofen enantiomers was up to 5.5. The elution order of the enantiomers was determined by an online OR-2090 detector, which was performed under the same chromatographic conditions. The first eluted enantiomer was (-)-cyflumetofen and the second eluted one was (+)-cyflumetofen. The method was validated for linearity, repeatability, accuracy, LOD, and LOQ. LOD ranged from 0.1 to 0.15 mg/kg, with the LOD varying from 0.33 to 0.5 mg/kg for each enantiomer, respectively. The average recoveries of the pesticide ranged from 71.4 to 102.0% at all fortification levels. The precision values associated with the analytical method, expressed as RSD values, were below 14.8% in all matrices. The method was then successfully applied to detect cyflumetofen enantiomers in real samples.

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“…Acaricides continue to be used to large extent, to control tetranychids such as T. kanzawai . Overhead sprays of acaricides are relatively costly, especially for resource‐poor smallholders, rarely provide long‐lasting control and interfere with (natural) biological control .…”

Section: Managementmentioning

confidence: 99%

Emerging pests and diseases of South‐east Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs

Graziosi

Minato

Álvarez

et al. 2016

Pest Management Science

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Cassava is a major staple, bio-energy and industrial crop in many parts of the developing world. In Southeast Asia, cassava is grown on >4 million ha by nearly 8 million (small-scale) farming households, under (climatic, biophysical) conditions that often prove unsuitable for many other crops. While SE Asian cassava has been virtually free of phytosanitary constraints for most of its history, a complex of invasive arthropod pests and plant diseases has recently come to affect local crops. We describe results from a region-wide monitoring effort in the 2014 dry season, covering 429 fields across five countries. We present geographic distribution and field-level incidence of the most prominent pest and disease invaders, introduce readily-available management options and research needs. Monitoring work reveals that several exotic mealybug and (red) mite species have effectively colonised SE Asia's main cassava-growing areas, occurring in respectively 70% and 54% of fields, at average field-level incidence of 27 ± 2% and 16 ± 2%. Cassava witches broom (CWB), a systemic phytoplasma disease, was reported from 64% of plots, at incidence levels of 32 ± 2%. Although all main pests and diseases are non-natives, we hypothesise that accelerating intensification of cropping systems, increased climate change and variability, and deficient crop husbandry are aggravating both organism activity and crop susceptibility. Future efforts need to consolidate local capacity to tackle current (and future) pest invaders, boost detection capacity, devise locally-appropriate integrated pest management (IPM) tactics, and transfer key concepts and technologies to SE Asia's cassava growers. Urgent action is needed to mobilise regional as well as international scientific support, to effectively tackle this phytosanitary emergency and thus safeguard the sustainability and profitability of one of Asia's key agricultural commodities. © 2016 Society of Chemical Industry.

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Comparative toxicity of acaricides toTetranychus merganserBoudreaux andTetranychus kanzawaiKishida (Acari: Tetranychidae)

Cited by 20 publications

References 19 publications

Determination of cyflumetofen residue in water, soil, and fruits by modified quick, easy, cheap, effective, rugged, and safe method coupled to gas chromatography/tandem mass spectrometry

Determination of cyflumetofen residue in water, soil, and fruits by modified quick, easy, cheap, effective, rugged, and safe method coupled to gas chromatography/tandem mass spectrometry

Chiral determination of a novel acaricide cyflumetofen enantiomers in cucumber, tomato, and apple by HPLC

Emerging pests and diseases of South‐east Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs

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