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 ...

Your body creates ammonia when it breaks down protein from foods. Ammonia contains nitrogen, which mixes with other elements in your body, including carbon, hydrogen, and oxygen, to form urea. Urea is ...

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 ...