Journal of Entomological Science (2011) 46, 308-314

T.-X. Liu and S.M. Greenberg (2011)
Effects of selected defoliants in combination with insecticides on the sweetpotato whitefly (Hemiptera: Aleyrodidae) and its parasitoids in cotton
Journal of Entomological Science 46 (4), 308-314
Abstract: Cotton defoliation is an important management practice associated with high-yielding, high-quality cotton. The impacts of two commonly-used defoliants (tribufos and thidiazuron) individually and in combination with two commonly-used insecticides (lambda-cyhalothrin and azinphosmethyl) on the sweetpotato whitefly, Bemisia tabaci Gennadius biotype B (= silverleaf whitefly, Bemisia argentifolii Bellows and Perring) and its parasitoids were determined in field studies in the Lower Rio Grande Valley of Texas. The two defoliants and their combinations with azinphosmethyl and lambda-cyhalothrin significantly affected the occurrence and survival of sweetpotato whiteflies and their parasitoids, Encarsia spp. and Eretmocerus spp., although the effects varied among the treatment combinations. Lambda-cyhalothrin alone had no significant effects on sweetpotato whitefly and its parasitoids. Combining defoliants and insecticides appears to be a potential management tool for whiteflies on cotton.
(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): Tong Xian Liu, Shoil M. Greenberg

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.
	Bemisia tabaci biotype MEAM1	Cotton (Gossypium)	U.S.A. (mid S)