section_path: Breeding/Genetic engineering
section_name: Genetic engineering
paragraph_text: Genetic engineering
  
  Genetically modified maize was one of the 26 genetically engineered food crops grown commercially in 2016. The vast majority of this is Bt maize. Genetically modified maize has been grown since 1997 in the United States and Canada; by 2016, 92% of the US maize crop was genetically modified. As of 2011, herbicide-tolerant maize and insect-resistant maize varieties were each grown in over 20 countries. In September 2000, up to $50 million worth of food products were recalled due to the presence of Starlink genetically modified corn, which had been approved only for animal consumption.