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To establish the multivariate compositional nutrient diagnosis (CND) standards, and the nutrient sufficiency range in ‘Rabab’ cultivar pomegranate, the leaf nutrient concentrations and yields of 196 commercial orchards were determined. The orchard’s nutritional status was calculated and evaluated through the CND method and their compatible principal component analysis (PCA). The CND references norms were calculated as V* N  = 2.587 ± 0.103, V* P  = 0.124 ± 0.206, V* K  = 2.232 ± 0.105, V* Ca  = 3.086 ± 0.165, V* Mg  = 1.367 ± 0.108, V* S  = 1.357 ± 0.137, V* Fe  = −1.410 ± 0.324, V* Mn  = −3.165 ± 0.221, V* Zn  = −4.499 ± 0.192, V* Cu  = −5.265 ± 0.225, V* B  = −2.884 ± 0.100, V* Rd  = 6.470 ± 0.075. The corresponding optimum concentration values of nutrients were N = 1.888 ± 0.210, P = 0.164 ± 0.032, K = 1.322 ± 0.163, Ca = 3.511 ± 0.230, Mg = 0.630 ± 0.115, S = 0.649 ± 0.051 in percent and Fe = 333.588 ± 87.009, Mn = 62.647 ± 14.413, Zn = 15.471 ± 3.105, Cu = 8.118 ± 2.288, B = 89.529 ± 5.125 in mg kg −1 . According to PCA analysis S, B, Fe and Cu, in the high yielding subpopulation and Ca, B, S and Mg in the low yielding subpopulation had the highest influence on the increment of fruit yield in ‘Rabab’ pomegranate orchards especially under saline and calcareous soil condition.

Applying the compositional nutrient diagnosis (CND) to pomegranate ( Punica granatum cv. ‘Rabab’) under saline and calcareous soil condition