The agency's ruling provides for the use of both Enlist One and Enlist Duo, which obtained registration renewal from the agency in January with expanded controls for some areas of the country. The company had asked to add an additional 128 counties for approved use, which the EPA granted

Researchers caution that the survey results, which include ranges and other information for specific services, should only be used as a guide, and point out that actual custom rates can vary widely within the state of Iowa, let alone among various states.

His in-person speech came as the USDA announced $250 million in funding for domestic fertilizer sources.

The survey also broke down respondents by various demographics. College-educated consumers were the most likely to report they had heard of no-till farming at 23%. About 24% of surveyed male consumers said they were aware of no-till farming, as opposed to just 14% of women.