Research Article
Nitrogen Use Efficiency and Nitrate Accumulation in Tubers as Affected by Four Fertilization Levels in Three Potatoes (Solanum tuberosum L.) Cultivars
K. Shahbazi,
A. Tobeh,
A. Ebadi,
B. Dehdar,
A. Mahrooz,
Sh. Jamaati-e-Somarin and M. Shiri-e-Janagrad