As reported in an earlier article, corn rootworm egg hatch in 2012 was slightly ahead of a normal year. Adults were first detected in Illinois last week and around Iowa this week. We’ve been getting many questions about when or if it is appropriate to treat the adults. Three factors must be taken into account before a foliar insecticide application is warranted.
Iowa State University
Hodgson, Erin W. and Gassmann, Aaron J., "Do You Need to Treat for Adult Corn Rootworm This Year?" (2012). Integrated Crop Management News. 220.
The Iowa State University Digital Repository provides access to Integrated Crop Management News for historical purposes only. Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user. Users should make their own assessment of the information and whether it is suitable for their intended purpose. For current information on integrated crop management from Iowa State University Extension and Outreach, please visit https://crops.extension.iastate.edu/.