With fertilizer costs elevated, Agvise Laboratories Soil Scientist John Breker said current soil testing information can quickly pay for itself. “You only need to find a few pounds of nitrogen in a field that you’re not going to apply as fertilizer to pay for your soil test.” Residual nitrogen levels vary significantly across the region, ranging from roughly 20 to 30 pounds in wetter areas to 40 or 50 pounds in drought-affected areas, with some samples showing 80 to 100 pounds or more.
