Pioneer Hi-Bred International, Inc.; Availability of a Request and Plant Pest Risk Similarity Assessment for an Extension of Determination of Nonregulated Status for Maize (Corn) Genetically Engineered for Insect Resistance and Herbicide Tolerance

We are advising the public that the Animal and Plant Health Inspection Service has received a request to extend our determination of nonregulated status of Pioneer Hi-Bred International, Inc.'s (Pioneer's) DP23211 insect-resistant and glufosinate-ammonium-tolerant maize (corn) to DP51291 maize (corn). Similar to DP23211 corn, DP51291 corn was genetically engineered to express the IPD072Aa protein for control of certain susceptible corn rootworm pests, the phosphinothricin acetyltransferase protein as a selectable marker and for tolerance to glufosinate herbicide, and the phosphomannose isomerase protein as a selectable marker. We are making the extension request, our draft plant pest risk similarity assessment, and preliminary determination of nonregulated status available for public review and comment.