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.
Available at: http://works.bepress.com/erin_hodgson/40/