Nitrogen prices are surging in 2026. Learn how to use the MRTN calculator and OSU Extension tools to find the most profitable ...

Processing tomato growers can use online software to estimate how much nitrogen to apply, and when, to produce a crop of maximum yield and quality and while minimizing leaching to groundwater. The ...

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 ...

In the wake of 2009's dismal protein numbers, North Dakota wheat growers may be able to take heart, now that they can arm themselves with more accurate nitrogen recommendations, thanks to Dave Franzen ...

Iowa State University is doing on-farm trials on 148 fields across the state this summer to try to find the optimum rate of nitrogen fertilizer to boost corn productivity while avoiding runoff into ...

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 review into how cover crops affect nitrogen uptake in following potato crops has confirmed one thing – it is complicated. Despite these complexities, the review also concluded that cover crops can ...