C. Zörb

Nitrogen supply modulates carbon–nitrogen balance and metabolic profiles in contrasting onion varieties

Onion bulb quality is largely defined by non-structural carbohydrates, phenolic antioxidants, and sulfur-containing flavor precursors, yet integrative evidence on how these domains respond to nitrogen imbalance under controlled conditions remains limited. A pot experiment applied four ammonium nitrate levels (N1–N4; 0....