Quoted: While other states brag big dairy and crop industries, Wisconsin’s insulation from fertilizer price spikes is thanks to having more cows per acre than corn per acre, according to Paul Mitchell, a professor in the UW-Madison department for Agriculture and Applied Economics.
“About a third of our nitrogen for corn comes from dairy manure,” Mitchell said. “And we have more cows per acre of cropland.”
However, manure isn’t easily accessible. It’s difficult to transport due to its high water content and therefore large volume, so it can’t usually go beyond it’s own farmland or crop farms neighboring dairy farms.
But it’s lack of transport ability shouldn’t dissuade you from seeking it out, according to Matt Ruark, a professor of soil science at UW-Madison and soil nutrient expert.
“We think of [manure] as a waste stream, but it is has relatively high nutrient value in terms of nitrogen, phosphorus and potassium. Those are big three nutrient inputs into our corn production systems,” Ruark said.