Evaluation of Nutritional Status of Dryland Wheat Using DRIS Method in South of West Azerbaijan Province

The aim of this study was to evaluate the nutritional status of dryland wheat using diagnosis, and recommendation integrated system (DRIS) method. To determine the DRIS indices, and norms in dryland wheat, 54 samples were collected from shoots, and concentrations of nutrients nitrogen (N), phosphorus (P), potassium (K), iron (Fe), manganese (Mn), copper (Cu), and zinc (Zn) were determined. To determine the norms, the farms were divided into two groups of high and low-yielding farms based on yield. Optimum concentrations of nutrients for macronutrients N, P, and K were 0.87- 1.35, 0.0360 - 0.104, 2.18 - 1.02 (%), and for micronutrients including Fe, Mn, Cu, and Zn were 170-430, 29-51, 3.6 – 8.4, 13 – 27 (mg kg-1), respectively, as well as optimum nutrient concentrations for N, P, and K were 1.11, 0.07 and 1.6 (%), and for Fe, Mn, Cu, and Zn 300, 40, 6, and 20 (mg kg-1) respectively, were determined. In most low-yielding farms, the nutritional balance index (NBI) was much higher than zero, indicating more nutrient imbalance in these farms. The overall priority for macro and micronutrients is P > K > Fe > N > Mn > Zn > Cu, which should be paid attention to P, K, Fe, and N in the nutritional program.