Bacillus thuringiensis strain PS149B1 produces binary insecticidal crystal proteins (ICP’s) named Cry34Ab1/Cry35Ab1 which is under commercial development through a collaborative research effort between Pioneer Hi-Bred and Dow AgroSciences LLC. Maize hybrids expressing Cry34Ab1/Cry35Ab1 ICP’s are being developed for control of the larval stage of corn rootworm. Non-target organism evaluations are an important component of the product development process. Field studies were initiated to evaluate the impact of Cry34Ab1/Cry35Ab1 corn hybrids on non-target arthropods. Results of the 2001 and 2002 study are presented as well as an update of the 2003 study. Future plans for field monitoring are discussed.
Keywords: Non-target organism, Field monitoring
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