Australian Journal of Entomology (1999) 38, 30-33

L.J. Wilson, G.A. Herron, L.R. Bauer and D.A. Lally (1999)
Acaricidal and stimulatory effects of insecticides on Tetranychus urticae Koch (Acari : Tetranychidae) in cotton
Australian Journal of Entomology 38 (1), 30-33
Abstract: Possible stimulatory or acaricidal effects of thiodicarb, dimethoate and endosulfan on the two-spotted spider mite, Tetranychus urticae Koch, were tested in a glasshouse. Population development of T. urticae was monitored, with the expectation that any stimulatory or acaricidal effects would be reflected in different population growth relative to untreated plants. Acaricidal activity of the three insecticides was also investigated using a standard bioassay technique. Population growth on thiodicarb- or dimethoate-treated plants was no different to that on untreated plants but was slower on plants treated with endosulfan. Bioassays showed that endosulfan was moderately acaricidal, that T. urticae was highly resistant to dimethoate and that thiodicarb was of very low acaricidal activity. No evidence of stimulatory effects of dimethoate or thiodicarb was found. The data suggest that stimulation is an unlikely explanation for outbreaks of T. urticae in cotton and that endosulfan sprayed for control of Helicoverpa spp. may delay the development of mite outbreaks.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Lewis J. Wilson, Grant A. Herron

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tetranychus urticae	Cotton (Gossypium)