Research into a nitrogen isotope-based testing system being pioneered in Britain could provide a vital new tool in ensuring valid organic certification for food and drink products. According to the ...

Methanol addition to a Ludzack-Ettinger process was tested as a short-term means of decreasing effluent nitrogen concentrations. Results from three experiments yielded gains of 0.05 to 0.11 mg nitrate ...

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 ...