With corn rootworm pressure (CRW) varying from year to year, it can appear when least expected. Even though pressure has been lower in recent years, CRW tends to bounce back. Some CRW populations can lay dormant for nearly two years waiting for corn to return to the field.

With the unpredictable nature of CRW, it is important for you to be observant. There are no instant solutions for managing CRW, so it’s important to prepare for a possible outbreak prior to planting with a combination of effective, powerful traits and a sound multi-year management strategy.

When working with a field that has experienced low levels of CRW pressure at any time in the past, it’s likely that in any given season, it will experience that pressure again. For a field with a history of low corn rootworm pressure, Syngenta recommends a trait stack with 1 or 2 modes of action for CRW control or a soil insecticide. Consider trait stacks with dual modes of action like Agrisure® 3122 E-Z Refuge®, Agrisure Duracade® 5122 E-Z Refuge® or Agrisure Duracade® 5222 E-Z Refuge®. For those interested in using a single CRW trait stack, Agrisure® 3000GT or Agrisure Viptera® 3111 are 2 available choices.

For a field that has experienced high corn rootworm pressure in the past, if crop rotation is not an option, consider a management program that includes a trait stack with one or two modes of action against CRW with a soil- or foliar-applied insecticide as needed for additional control.

Syngenta has developed a quick guide to serve as an easy reference:

For more information, contact your Syngenta representative.

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©2017 Syngenta. Important: Always read and follow label instructions. Some products may not be registered for sale or use in all states or counties. Please check with your local extension service to ensure registration status. Force CS, Force Evo, Force 3G and Warrior II with Zeon Technology are Restricted Use Pesticides. Caution: Do not spray E-Z Refuge products with glufosinate ammonium based herbicides, including Liberty® herbicide. Warrior II with Zeon Technology is highly toxic to bees exposed to direct treatment on blooming crops and weeds. Do not apply this product or allow it to drift onto blooming plants while bees are foraging adjacent to the treatment area. Agrisure®, Agrisure Duracade®, Agrisure Viptera®, E-Z Refuge®, Force®, Warrior II with Zeon Technology® and the Syngenta logo are trademarks of a Syngenta Group Company. HERCULEX® and the HERCULEX shield are registered trademarks of Dow Agrosciences, LLC. HERCULEX Insect Protection technology by Dow AgroSciences. LibertyLink®, Liberty® and the Water Droplet logo are registered trademarks of Bayer.