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Time to Assess Corn Rootworm Activity in Iowa

July 31, 2013
Western Corn Rootworm adults

By Erin Hodgson and Aaron Gassmann, Department of Entomology



Corn rootworm egg hatch was delayed this year because of cool spring temperatures, and adults are beginning to emerge throughout Iowa. Now is a good time to assess root injury caused by larvae and also monitor for adult activity in corn.


 


Larvae


Crop: 

First Iowa Confirmation of Resistance to Bt Corn by Western Corn Rootworm

December 22, 2011
Western Corn Rootworm adults

While the number of fields with resistance to Cry3Bb1 corn is small at this time in Iowa, it should be noted that similar damage has been reported in other states. Research highlights the importance of incorporating integrated pest management and insect resistance management into field crop production.

Crop: