Ideal nitrogen fertilizer rates in Corn Belt have been climbing for decades, study shows / Dutch health institute: Agriculture Min.'s nitrogen claims are not scientifically proven / Gene-edited soil bacteria could provide third source of nitrogen for corn production / New research could simplify genetic transfer of nitrogen fixation to food crops / Ban on using liquid nitrogen when serving food in Karnataka / DMDK urges TN govt to ban use of liquid nitrogen in food / Fiat to monitor use of liquid nitrogen in food items / Legume model plant study clarifies underlying mechanism of iron acquisition in response to nitrogen