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EPA Releases Guidance on Slowing Pest Resistance

November 14, 2017

The U.S. Environmental Protection Agency (EPA) recently released two pesticide registration notices (PRNs) that impact how technology providers, crop advisers, and producers manage resistance. These documents are in addition to a new framework to address Bt resistance in corn rootworm released in 2016. These releases, which all went through public comment, provide guidance in managing resistance and support the strategies and goals of the Iowa Pest Resistance Management Program (IPRMP).

Act Now or Lose more Yield, Income to Weeds, say Agronomic Experts

January 18, 2018

Weed resistance is a threat to farm profitability. Hear about weed management strategies from three local weed experts: Iowa State University Extension Weed Scientist Bob Hartzler, Iowa Soybean Association Sr. Director of Research Ed Anderson and Mike Weber, Sr. Tech Services Representative for Bayer Crop Sciences.

Iowa Pest Resistance Management Plan Unveiled

January 30, 2017

Iowa Pest Resistance Management Plan logo


DES MOINES – Iowa Secretary of Agriculture Bill Northey, Iowa State University College of Agriculture and Life Sciences Associate Dean John Lawrence and Iowa farmer Larry Buss of Logan today announced the release of the Iowa Pest Resistance Management Plan. A video of the announcement is available here.


Version 1 of the IPRMP is an Iowa-specific plan that seeks to engage farmers on the issue of pest resistance management with the goal of keeping technology and tools such as pesticides, seed treatments and biotechnology products and native traits available and effective.

Weeds Are Winning the War against Herbicide Resistance

June 29, 2018

"There is a “considerable chance,” the authors write, “that the evolution of pest resistance will outpace human innovation.” Addressing the situation requires a collective effort between funding agencies, regulators, farmers and others, the authors add in the review, published in Science.

Western Corn Rootworm Resistance to Final Bt Trait Confirmed

November 7, 2018

Corteva Agriscience recently confirmed resistance to the Cry34/35Ab1 Bt protein in Delaware County. 

Three of four Bt traits targeting corn rootworm (Cry3Bb1/Yieldguard rootworm; mCry3A/Agrisure RW; and eCry3.1Ab + mCry3A/Agrisure Duracade) are not reliable for rootworm control due to widespread resistance. Due to a reduction in effectiveness of the Cry3 proteins, farmers have come to rely upon Cry34/35Ab1 for rootworm protection, placing significant selection pressure on this trait.

ICM Conference 2018: Day 2 Round Up

November 29, 2018

Day 2 of the #ICM30 Conference has wrapped up and while we feel great about the sessions we were able to get to today, there were plenty out there that we were not able to get to that had just as helpful information. Make sure to get on Twitter and search for the #ICM30 to get all of the updates from various presentations today.

Here is a round-up of several sessions today in relation to Integrated Pest Management:

Brad Coates
Insect Resistance to Bt

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