Fruit Crop CAT (Crop Advisory Team) Alert

Apple maggot monitoring and control
David Epstein, MSU IPM Program

Compound Trade Name	Chemical Class	Life-stage Activity	Optimal Spray Timing for AM	Effectiveness Rating**	Residual Activity	* Mite Flaring Potential
Guthion, Imidan	Organophosphates	Adults	7-10 days after the first fly is captured	Excellent	14+ days	L - M
Lannate	Carbamates	Adults	7-10 days after the first fly is captured	Good	5-7 days	M - H
Asana, Warrior, Danitol, Decis	Pyrethroids	Adults	7-10 days after the first fly is captured	Good	7-10 days	H
SpinTor, Entrust, GF120 NF	Naturalytes	Adults	Immediately after the first fly has been captured	Fair	7-10 days	L
Assail, Calypso	Neonicotinoids	Adults	7-10 days after the first fly is captured	Excellent	10-14 days	M
Surround Kaolin clay	Particle Film Protectant	Adults	Multiple applications before fly emergence	Excellent	As long as thorough coverage of the tree canopy is maintained	L

* Pollinator/Parasitoid Toxicity rating; S – relatively safe, M – moderate toxicity, H – Highly Toxic.
** Effectiveness rating of insecticides (2005 Fruit Management Guide, MSUE bulletin E-154)

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