Farmers would likely be forced to use mechanical weeding and increase tillage, both of which involve diesel-powered equipment, without atrazine.

"Farmers need all their tools in their toolbox right now, which includes pesticides," National Association of State Departments of Agriculture CEO Ted McKinney said in a statement to FOX Business. "Pesticides, including Atrazine, are an important component within many agricultural and horticultural crop production systems that result in the production of a safe, abundant and affordable food supply.

"More specifically, atrazine is particularly important for farmers using no-till or minimum till systems, which are a primary method for reducing emissions of carbon and greenhouse gases. We will review the proposed rule and submit our comments to the EPA."

The EPA's announcement Thursday initiated a public comment period of 60 days. An agency spokesperson referred FOX Business to its public comments in response to an inquiry.