Diagnosis and Recommendation Integrated System (DRIS) can be employed as an efficient method of interpreting the results of plant analysis and the nutritional diagnosis in crops, as well as in fruit trees. To establish DRIS norms in onion (Allium cepa L) leaf samples were collected from 50 fields and N, P, K, Ca, Mg, Fe, Mn, Zn, Cu and B concentrations determined. On the bases of yield, the studied fields were divided into two groups of low vs. high yield. DRIS norms were established for the different nutrient ratios. DRIS indices were determined to evaluate nutrients’ balance and the order of nutrient requirements. On the basis of means of DRIS indexes, the respective ranks for the requirement of nutrients were determined as Ca>K>P>Mg>N for macro nutrients vs. Cu>Mn>B>Zn>Fe for micro nutrients. Sufficiency ranges of macro as well as micro nutrients were also derived through DRIS technique. DRIS-derived sufficiency ranges were recorded as 2. 9-3. 68, 0. 21-0. 39, 3. 7-6. 4, 1. 38-2. 6, 0. 23-0. 33 % for N, P, N, Ca, Mg, and 86-154, 9-32, 44-65, 9-18, 23-35 mg/kg for Fe, Zn, Mn, Cu, B respectively. The Nutrient Balance Index (NBI) of DRIS amounted to much more than zero in all the low-yielding farms.