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Using BCAs to Control Aphids and Whiteflies
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With all of the buzz surrounding neonics, all too often the discussions regarding the alternatives revolve around the use of other chemical insecticides. What options are available to those who want to use "softer" chemistries and/or biological control agents (BCAs)? There are indeed plenty of options available. Here are some of the most effective and commonly used BCAs for controlling aphids and whiteflies:

Aphids

Aphelinus abdominalis - Parasitic Wasp

Aphidius colemani - Parasitic Wasp

Aphidius erviss - Parasitic Wasp

Aphidoletes aphidimyza - Predatory Midge

Chrysopa (Green Lacewing) - Predator

Whiteflies

Amblyseius swiskii - Predatory Mite

Encarsia formosa - Parasitic Wasp

Eretmocerus eremicus - Parasitic Wasp

Metarhizium anisopliae - Bioinsecticide (Met 52)

Captiva (Capsicum extract, Garlic Oil, Soybean Oil) - Repellent/Insecticide

Both Aphids and Whiteflies

Isaria fumosorosea (Paecilomyces fumosoroseus) - Mycoinsecticide (No Fly/Preferal)

Beauveria bassiana - Mycoinsecticide (BotaniGard/Mycotrol)

Chromobacterium substugae (Achromocil) - Bioinsecticide (Grandevo)

Azadirachtin - Insect Growth Regulator (Aza-Direct, Azatin, Ornazin)

Potassium salts of fatty acids - Insecticidal Soap (M-Pede)

The best results are obtained when BCAs are used preventatively or when the pest populations are low. BCAs also don't have the residual activity (longevity) that many of the traditional insecticides provide; therefore, BCAs will have to be applied or released frequently in order to sustain adequate levels of control over time.

Reader Comments (1)


It's aphidius ervi... not Aphidius erviss.

(The editor replies: The Buglady knows! Thanks for the correction, Suzanne.)
Friday, March 27, 2015 | Suzanne Wainwright


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