Corn earworm activity in Michigan sweet corn is beginning for 2013

Zsofia Szendrei, Michigan State University Extension, Department of Entomology -

If you have a sweet corn field with fresh silks developing, now is the time to set your pheromone trap.

See the map below for corn earworm activity in pheromone traps for the first week of July 2013.

Corn earworm trapping map
Numbers on the map represent the number of corn earworms caught in pheromone traps in the first week of July 2013. Each number is the total number of moths caught in a single trap placed near a sweet corn field. Asterisk means that the trap was knocked over by a storm, so number of moths would likely be higher.

To learn more about corn earworm biology, trapping and management, read the Michigan State University Extension article “Corn earworm activity is beginning in Michigan sweet corn fields” from 2012. The only recent update to this article is that any number of corn earworms caught in the pheromone trap signals the beginning of the spray program, if the field has fresh silk.

Dr. Szendrei's work is funded in part by MSU's AgBioResearch.

This article was published by Michigan State University Extension. For more information, visit https://extension.msu.edu. To have a digest of information delivered straight to your email inbox, visit https://extension.msu.edu/newsletters. To contact an expert in your area, visit https://extension.msu.edu/experts, or call 888-MSUE4MI (888-678-3464).

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