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2018 Labor Day Palmer amaranth tour

September 4, 2018
News

Palmer amaranth has the potential to become a weed pest that threatens farm productivity and profit. Weed Scientist Bob Hartzler visits three places in Iowa where Palmer has been found. Harrison County and the local Herbicide Resistance Project team is the only one successfully mitigating the threat. 

Western Corn Rootworm Resistance to Final Bt Trait Confirmed

November 7, 2018
News

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.

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