Source: Pioneer Hi-Bred

Pioneer Hi-Bred has received approval of Optimum Intrasect insect protection allowing corn growers in the United States and Canada to significantly reduce their structured above-ground refuge. Optimum Intrasect insect protection offers dual mode above ground insect protection and reduced refuge requirements. Reduced above-ground refuge is a key step toward Pioneer's next generation single-bag refuge solutions.

Pioneer brand hybrids with the Optimum Intrasect insect protection trait combination of Herculex I and YieldGard Corn Borer are approved as noted:



  • In late 2010, the U.S. Environmental Protection Agency (EPA) amended the registration for the U.S. Corn Belt, reducing the structured refuge from 20 percent to 5 percent.

  • In January, the Canadian Food Inspection Agency (CFIA) approved an amendment to reduce structured refuge from 20 percent to 5 percent in Canada.

  • This February, the U.S. EPA amended the registration in U.S. cotton-growing areas, reducing structured refuge from 50 percent to 20 percent.
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