ناصر میران,

[ 1 ] - ارزیابی وضعیت تغذیه‌ای چغندرقند با استفاده از روش DRIS و مقایسه آن با روشDOP در استان آذربایجان غربی

To establish DRIS norms in sugar beet (Beta Vulgaris L.) and compare them with DOP index, leaf samples were collected from 57 fields and N, P, K, Ca, Mg, Fe, Mn, Zn, Cu and B concentrations were determined. On the bases of crop yield, the fields were divided into two groups with low and high yielding performances. Standard DRIS norms were established for the different nutrient ratios. DRIS indi...