Summary
Efficient nitrogen management is critical for sustaining U.S. agricultural productivity while reducing environmental pollution and economic losses associated with fertilizer overuse. Despite widespread adoption of precision agriculture tools such as drones and satellite imagery, farmers still lack the ability to detect nitrogen deficiency before visible symptoms appear, when yield losses are often already unavoidable. Because nitrogen stress first manifests as molecular-level changes within plants, early diagnosis requires direct measurements rather than external observations. This CAREER proj