11.   The agency is also considering tighter planting restrictions on both Bt corn and Bt cotton to prevent the development of insect pests that are resistant to the toxin.

12.   The EPA said Tuesday it is acting to ensure that farmers comply with planting restrictions designed to prevent the development of insects resistant to the toxin.

13.   The government is putting new planting restrictions on genetically engineered corn to address various environmental concerns, including a fear that it could endanger Monarch butterflies.

14.   The government is putting new planting restrictions on genetically engineered corn to prevent insects from developing resistance to the toxin in the biotech crop.

15.   The planting restrictions will be higher in cotton-growing areas because of the widespread use of a Bt-version of cotton.