Activity of codling moth insecticides on secondary pests

Editor’s note: This article is from the archives of the MSU Crop Advisory Team Alerts. Check the label of any pesticide referenced to ensure your use is included.    

Second generation codling moth adult flight has increased over the last 10 days at the TNRC, initiating a July 15 biofix for the upcoming egg laying and hatch period. Field reports suggest that at the same time apple growers will be planning to control codling moth, several secondary insect pests, including Japanese beetle, apple maggot and spotted tentiform leafminer may need to be managed. The following table includes a list of insecticides recommended for second generation codling moth control, and their activity on these secondary pests.

Table 1. Activity of insecticides on secondary insect pests

Compound trade name

Japanese
beetle

Apple
maggot

Tentiform
leafminer

Leafhoppers

Guthion/Imidan

Excellent

Excellent

Poor

Good (PLH only)

Calypso/Assail

Good

Excellent

Excellent

Excellent

Rimon

Poor

Poor

Good

Poor

Dr. Wise’s work is funded in part by MSU‘s AgBioResearch.

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