Recommended Configurations for Insect Resistance Management
The non-Bt corn refuge on each farm may be arranged in a number of recommended spatial configurations
that incorporate a non-Bt corn refuge without lessening the effectiveness of the resistance management
program, as shown below:
Separate field: plant a separate non-Bt corn field within one-fourth to one-half mile of each
Bt corn field, This option is not suitable for rootworm refuge.
Block: plant non-Bt corn strips or blocks within the Bt field.
Split Planter: split the planter to alternate four or more rows (six is preferred) of non-Bt
corn within the Bt corn.
Pivot Corners: plant non-Bt corn as pivot.
Perimeter: plant as field perimeters or end rows to non-Bt corn.