AMES, Iowa – The soil fertility tests farmers have used for decades to measure nitrogen levels don’t account for the vast majority of the nitrogen in soils, so Iowa State University scientists helped ...

Having low BUN levels doesn’t necessarily indicate a kidney problem. Depending on the cause, you may need to focus on drinking more water and eating less protein. A blood urea nitrogen (BUN) test is ...

One of the essential nutrients for vigorous crop production is nitrogen. Yet most routine tests done in commercial soil testing labs do not measure available nitrogen in the soil. Soil scientists ...

Whether we like it or not, summer is over and fall is setting in. A lot of early planted corn in the region has reached maturity, with some already having been harvested to take advantage of new crop ...

Revised Document Prepared by: A.L. Shober, K.L. Gartley, and J.T. Sims Department of Plant and Soil Sciences, University of Delaware Unlike other nutrients, such as potassium or phosphorus, the ...