It has been told by the National Research Council that weeds were developing resistance to the herbicides and the biotech crops were affecting all the U. S. farmers.

It was seen that the genetically engineered crops were introduced in 1996 and around 9 species of weed had developed resistance to glyphosate. According to the report, this is the main component in the commercial weed killers. Because of the repeated exposure the weeds have become resistant to this glyphosate.

"Many American farmers are enjoying higher profits due to the widespread use of certain genetically engineered crops and are reducing environmental impacts on and off the farm," said David Ervin, Professor of Environmental Management and Economics, Portland State University, Portland, Oregon, and Chair of the committee.

He also mentioned that these benefits were not universal for all the farmers.

According to the reports, good quality of water could be beneficial for the genetically engineered crops. It was also seen from the reports that the farmers were using less insecticides and herbicides after growing theses genetically engineered crops.

National Research Council, an independent, nonprofit institution funded the study that provided science, technology, and health policy advice under an 1863 congressional charter.