insect resistance management

The risk of insect resistance is real but may be reduced with proper planning. To help preserve the effectiveness and benefits of Bacillus thuringiensis (B.t.) technology, growers are required to follow an Insect Resistance Management (IRM) plan. Growers must read the IRM Grower Guide prior to planting for details on planting a refuge, geographical restrictions, and other requirements of the IRM Plan.

IRM Grower Guide – Growers must read the IRM Grower Guide prior to planting.



Cotton IRM Refuge Calculator – This calculator assists cotton growers who plant Genuity® Bollgard II® in areas where a planted refuge is required. The calculator assists in determining refuge acres and planting configurations.



Corn IRM Refuge Calculator – This calculator assists corn growers in determining refuge acres, bags of seed to purchase, and planting configurations.



Corn IRM CBT – Watch this online training tutorial to learn more about the value of planting a corn refuge and for a summary of the IRM requirements described in the IRM Grower Guide.



For additional IRM Literature or Links, please visit the Resource Center.

Bookmark and Share

Your Monsanto Technology/
Stewardship Agreement (MTSA)

If you have not renewed your license within the last year, click below to


start the renewal process.