Stewardship

Insect Resistance Management (Corn Borer)

Growers of biotech traits containing insect protection from European Corn Borer, are required to plant a non-Bt corn refuge representing at least 20% of their total corn acres. Refuges must be within 1/2 mile of each Bt corn field. The refuge can be treated with a non-Bt insecticide if pest pressure exceeds the economic threshold. The refuge can be planted as a border, block, strip, or as a separate field. If perimeter or splitting planter configurations are used for the refuge, the strips must be at least four consecutive rows wide. Use of neighbor's field will not satisfy the refuge requirement.

Insect Resistance Management (Rootworm)

Growers of transgenic Rootworm products are required to plant a corn refuge that does not contain Bt technologies that control corn Rootworm. The refuge must represent at least 20% of the grower's total corn acres and must be within or adjacent to the transgenic Rootworm field. The refuge can be treated with a non-Bt soil-applied, seed-applied or foliarapplied insecticide if pest pressure exceeds the economic threshold. If adult corn Rootworm beetles are present in the refuge when the refuge is treated, the transgenic Rootworm portion must be treated in a similar manner. The refuge can be planted as a block or strips within the transgenic Rootworm field or as an adjacent field. If perimeter or splitting planter configurations are used for the refuge, the strips must be at least four consecutive rows wide. Use of neighbor's field will not satisfy the refuge requirement.