NASHUA, Iowa — Iowa State University Extension agronomist John Sawyer wants farmers to use the Corn Nitrogen Rate Calculator to fine-tune their nitrogen management. The calculator is a web tool that ...

The Iowa Legislature wants to spend $1 million next year to revise the state’s long-standing nitrogen fertilizer calculator used in seven corn-growing states. The money would be used to update the ...

A tractor is used to apply 32 percent liquid urea ammonium nitrate by dripping it onto the base of young corn plants in Northeast Iowa as part of a nitrate strip trial done by the Iowa Soybean ...

AMES, Iowa – The amount of nitrogen fertilizer needed to maximize the profitability of corn production in the Midwest has been increasing by about 1.2% per year for the past three decades, according ...

Mid-April is the ideal time to put out that first fertilizer application on lawns in North Florida. A newer trend in managing fertilizers while protecting the environment is the 4 R’s of nutrient ...

In-soil placement of phosphorus can decrease phosphorus loss in snowmelt runoff We've all heard about the magical combination of being in the right place at the right time. Well for fertilizer, it's ...