This report evidences that despite 20 years of research and 13 years of commercialization, genetic engineering has failed to significantly increase U.S. crop yields
In particular, the author "reviewed two dozen academic studies of corn and soybeans, the two primary genetically engineered food and feed crops grown in the United States. Based on those studies, the UCS report concluded that genetically engineering herbicide-tolerant soybeans and herbicide-tolerant corn has not increased yields. Insect-resistant corn, meanwhile, has improved yields only marginally. The increase in yields for both crops over the last 13 years, the report found, was largely due to traditional breeding or improvements in agricultural practices".
The report concludes highlighting the role of organic farming as sustainable and effective path to achieve real and substantial long-term quantitative and qualitative increases in agricultural production.