Relative Toxicity of Fenazaquin Against Two-Spotted Spider Mite on Okra

Sangeetha, S.; Ramaraju, K.

doi:10.1080/19315260.2012.725320

Cited by 16 publications

(5 citation statements)

References 5 publications

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“…The results in respect of chlorfenapyr are in substantiated with the findings reported by Vasquez and Ceballos ( 2009) on tomato, Muhammad et al, (2012) and Esteves (2013) against T. urticae. Similarly, the effectiveness of fenazaquin has been reported by Dhar et al, (2000), Kavitha et al, (2006) and Sangeetha and Ramaraju (2013) against T. urticae on okra. The results in respect to bifenazate are in line with that reported by Rani and Sridhar (2005) on rose, Labanowsaka (2007) and Vostrel (2011) against T. urticae on strawberry and hope respectively.…”

Section: Overall Cumulative Effect Of Different Miticides On Population Of T Cinnabarinus On Okra (Average Of Two Sprays)supporting

confidence: 68%

Bioefficacy of Different Miticides and Botanicals against Field Abundance Attacking Host Mite, Tetranychus cinnabarinus (Boisd) on Okra

Pawar¹,

Mane²

2021

Int.J.Curr.Microbiol.App.Sci

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Section: Overall Cumulative Effect Of Different Miticides On Population Of T Cinnabarinus On Okra (Average Of Two Sprays)supporting

confidence: 68%

Bioefficacy of Different Miticides and Botanicals against Field Abundance Attacking Host Mite, Tetranychus cinnabarinus (Boisd) on Okra

Pawar¹,

Mane²

2021

Int.J.Curr.Microbiol.App.Sci

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“…92 Fenazaquin inhibits the mitochondrial electron transport chain and has been used against different stages of spider mites. 93 At present, there have been no reports of Varroa resistance to fenazaquin; however, it is important to note that P. ulmi 94 and T. urticae 95 were documented as fenazaquin resistant. To our knowledge, this study is the first investigation testing the efficacy of fenazaquin on V. destructor and the effects on A. mellifera .…”

Section: Discussionmentioning

confidence: 99%

“…Quinazoline commercialized FPs have reported minimal impacts on many beneficial insects and mites 92 . Fenazaquin inhibits the mitochondrial electron transport chain and has been used against different stages of spider mites 93 . At present, there have been no reports of Varroa resistance to fenazaquin; however, it is important to note that P. ulmi 94 and T. urticae 95 were documented as fenazaquin resistant.…”

Section: Discussionmentioning

confidence: 99%

Miticidal activity of fenazaquin and fenpyroximate againstVarroa destructor, an ectoparasite ofApis mellifera

Bahreini¹,

Nasr²,

Docherty³

et al. 2022

Pest Management Science

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BACKGROUND The Varroa mite (Varroa destructor) is an ectoparasite that can affect the health of honey bees (Apis mellifera) and contributes to the loss of colony productivity. The limited availability of Varroacides with different modes of action in Canada has resulted in the development of chemical resistance in mite populations. Therefore, an urgent need to evaluate new potential miticides that are safe for bees and exhibit high efficacy against Varroa exists. In this study, the acute contact toxicity of 26 active ingredients (19 chemical classes), already available on the market, was evaluated on V. destructor and A. mellifera under laboratory conditions using an apiarium bioassay. In this assay, groups of Varroa‐infested worker bees were exposed to different dilutions of candidate compounds. In semi‐field trials, Varroa‐infested honey bees were randomly treated with four vetted candidate compounds from the apiarium assay in mini‐colonies. RESULTS Among tested compounds, fenazaquin (quinazoline class) and fenpyroximate (pyrazole class) had higher mite mortality and lower bee mortality over a 24 h exposure period in apiariums. These two compounds, plus spirotetramat and spirodiclofen, were selected for semi‐field evaluation based on the findings of the apiarium bioassay trials and previous laboratory studies. Consistent with the apiarium bioassay, semi‐field results showed fenazaquin and fenpyroximate had high efficacy (>80%), reducing Varroa abundance by 80% and 68%, respectively. CONCLUSION These findings suggest that fenazaquin would be an effective Varroacide, along with fenpyroximate, which was previously registered for in‐hive use as Hivastan. Both compounds have the potential to provide beekeepers with an alternative option for managing Varroa mites in honey bee colonies. © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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“…The good efficacy of fenazaquin 10 EC (150g a.i./ha) was also reported by Wale et al (2010) on okra. Sangeetha and Ramaraju (2013) reported that fenazaquin 10 EC at 125 and 150 g a.i./ha caused the highest reduction in numbers of mites in pot culture and field experiments. Bhaskaran et al (2007) reported that diafenthiuron 50 WP at 450 g a.i./ha recorded the highest mean reduction of mite population after first and second round of spraying.…”

Section: Resultsmentioning

confidence: 99%