Bt Plant-Incorporated Protectants October 15, 2001 Biopesticides Registration Action Document
3] Requirements for the registrants to develop, implement, and report to EPA on programs to educate growers about IRM requirements;
4] Requirements for the registrants to develop, implement, and report to EPA on programs to evaluate and promote growers’ compliance with IRM requirements;
5] Requirements for the registrants to develop, implement, and report to EPA on programs to evaluate whether there are statistically significant and biologically relevant changes in target insect susceptibility to Cry1Ab protein and/or Cry1F in the target insects;
6] Requirements for the registrants to develop, and if triggered, to implement a “remedial action plan” which would contain measures the registrants would take in the event that any insect resistance was detected as well as to report on activity under the plan to EPA;
7] Submit annual reports on sales, IRM grower agreements results, compliance, and educational program on or before January 31st each year.
Corn-Belt Refuge Requirements
For Cry1Ab and Cry1F Bt field corn grown outside cotton-growing areas (e.g., the Corn Belt), grower agreements (also known as stewardship agreements) will specify that growers must adhere to the refuge requirements as described in the grower guide/product use guide and/or in supplements to the grower guide/product use guide.
Specifically, growers must plant a structured refuge of at least 20% non-Bt corn that may be treated with insecticides as needed to control lepidopteran stalk-boring and other pests.
Refuge planting options include: separate fields, blocks within fields (e.g., along the edges or headlands), and strips across the field.
External refuges must be planted within ½ mile (1/4 mile or closer preferred).
When planting the refuge in strips across the field, refuges must be at least 4 rows wide, preferably 6 rows wide.
Insecticide treatments for control of ECB, CEW and Southwestern corn borer (SWCB) [Cry1Ab or Cry1F corn hybrids] and/or fall armyworm (FAW) and black cutworm (BCW) [Cry1F corn hybrids only] may be applied only if economic thresholds are reached for one or