Nitrogen is often the most limiting nutrient in growing plants. When deficient, plant yields and quality are reduced. However, excessive nitrogen applications could cause concerns in water quality and ...

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 ...

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 ...

Nitrogen-based synthetic fertilizer forms the backbone of the world food supply, but its manufacture requires a tremendous amount of energy. Now, computer modeling at Princeton University points to a ...