Source: Purdue University
American agriculture's oldest and most well-established herbicide, atrazine, is a component of an inexpensive and effective way to protect corn against many types of weeds, said Purdue University weed scientist Bill Johnson.
In Indiana, millions of pounds of atrazine are applied annually to corn and sorghum to control broadleaf and grassy weeds, and it is the main ingredient in about 40 name-brand herbicides.
Currently, the Environmental Protection Agency is reviewing the safety of atrazine for the third time since the early 1990s. In each of the two previous reviews the EPA ruled in atrazine's favor, most recently in 2006 after considering 6,000 studies and 80,000 public comments.
Some ways farmers can ensure atrazine is applied as safely and effectively as possible are to follow all label instructions and know when and where to apply the herbicide.