EFSA confirms GM maize buffer zones
Existing EU recommendations for buffer zones to prevent non-target insects from ingesting pollen from genetically modified Bt maize “remain valid”, says the European Food Safety Authority (EFSA). Previous EFSA opinions suggested that protected habitats containing non-target Lepidoptera should have isolation distances of 20 m from crops of Syngenta’s Bt11 and Monsanto’s MON810 maize, and 30 m from DuPont/Dow AgroSciences’ 1507 maize. The EFSA reviewed its earlier opinions after deciding that they were based on “unrealistically large levels of exposure that would not be expected in practice”. It refined its models using new information on maize pollen deposition over long distances to give mortality estimates for a “more realistic” level of exposure.