Roundup Ready

genetically engineered seeds/crops that have had their DNA altered to allow them to withstand the herbicide glyphosate (the active ingredient of Monsanto's herbicide Roundup). RR crops deregulated in the U.S. include: corn, soybeans, canola, cotton, sugarbeets, and alfalfa. When planting Glyphosate Tolerant crops, a farmer can spray the entire crop with glyphosate, killing only the weeds and leaving the crop alive. However, one concern with the heavy use of glyphosate on RR crops is that it will lead has led to the development of glyphosate resistant weeds (sometimes referred to as "superweeds")