Ban sought on GM crops on federal land
That usually includes seed that has been modified to resist the herbicide glyphosate, which is marketed by Monsanto Co. as Roundup.
MacKenzie said the planted acres include buffer zones, require crop rotation and other checks "to facilitate safe, consistent and sustainable" food sources for migrating waterfowl and other birds.
Douglass said genetically-engineered crops "are the last thing that should be introduced onto a national wildlife refuge." She said that if the groups are successful in ending those plantings, they may then turn their attention to ending all crop development on wildlife refuge land.
MacKenzie said using traditional seed would lead to a greater need to spray herbicides, something the genetically-altered grains don't require.
The third group suing is Washington, D.C.-based Beyond Pesticides.