NDLI: Control of Bemisia tabaci and Frankliniella occidentalis in cucumber by Amblyseius swirskii

Content Provider	Springer Nature Link
Author	Calvo, F. J. Bolckmans, K. Belda, J. E.
Copyright Year	2010
Abstract	Bemisia tabaci Genn. (Hemiptera: Aleyrodidae) and Frankliniella occidentalis (Thysanoptera: Thripidae) are major pests in greenhouse grown cucumber crops. Recently, Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae) was shown an effective biological control agent of both pests. Hence, perhaps both pests can be controlled simultaneously by this predator. However, with simultaneous infestation of both pests, synergistic effects, or interference could affect biological control and perhaps require changes in release rates of the predator. Thus, the aim of the present study was to evaluate different release rates of A. swirskii to control both pests under a worst case scenario of rapid immigration into a cucumber greenhouse. Two experiments were conducted, one simulating the influx of whiteflies alone (whitefly experiment) and the other immigration of whiteflies and thrips together (whitefly plus thrips experiment). Three treatments were compared in the whitefly experiment: (1) B. tabaci alone, (2) B. tabaci + 25 A. swirskii m−2 and (3) B. tabaci + 75 A. swirskii m−2. The high release rate was more effective than the low rate in controlling B. tabaci alone. The high rate was subsequently tested against B. tabaci and F. occidentalis for the whitefly and thrips experiment in which five treatments were compared: (1) B. tabaci alone, (2) F. occidentalis alone, (3) B. tabaci + 75 A. swirskii m−2, (4) F. occidentalis + 75 A. swirskii m−2 and (5) B. tabaci + F. occidentalis + 75 A. swirskii m−2. This rate of A. swirskii controlled whiteflies and thrips either alone or together. Therefore, 75 A. swirskii m−2 should be an adequate rate for controlling both pests either alone or simultaneously in cucumber greenhouses.
Starting Page	185
Ending Page	192
Page Count	8
File Format	PDF
ISSN	13866141
Journal	BioControl
Volume Number	56
Issue Number	2
e-ISSN	15738248
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-10-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biological control Release rate Phytoseiidae Whitefly Thrips Cucumber Entomology Behavioural Sciences Animal Ecology Agriculture Plant Pathology Animal Biochemistry
Content Type	Text
Resource Type	Article
Subject	Insect Science Agronomy and Crop Science

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