Transgenic crops expressing resistance to the herbicide glyphosate (GR) fill been commercialized and planted widely across the U.
S. for two decades. The majority of transgenic corn (Bt) also has been engineered to produce toxins effective against certain corn insect pests. In recent years, claims fill been made that glyphosate and transgenic traits result in corn plants that are more susceptible to crop diseases.
Source: phys.org