Newly published research from Iowa State University agronomists shows the application of nitrogen fertilizer at optimum levels to corn and soybeans is required to maintain carbon in the soil, giving rise to a range of environmental and production benefits.

 

In a study published in the journal PLOS ONE, ISU agronomists showed nitrogen fertilizer can contribute to soil health and water quality by helping retain carbon.

 

“Our data show that nitrogen fertilizer, when applied at a level that maximizes crop production, is critical to maintain soil carbon for sustainable agricultural systems,” Michael Castellano, an associate professor of agronomy and co-author of the study, said in a news release. “In fact, I’d say it plays an essential role.”

 

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