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 ...

Corn and soybean harvest continues to move slowly forward. The rains of the past two weeks have really slowed the pace of activity. Soils vary now from moist to wet, and any additional rain will take ...

AMES, Iowa – When Michael Castellano tells people there are billions of different variations of farmer decisions and environmental conditions that can affect how much nitrogen fertilizer is just ...

It makes sense that farmers would want to apply only as much fertilizer as they need to maximize their yield. Any more and it’s money wasted on fertilizer that likely will run off into a nearby stream ...

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 ...

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 ...