Leaf and Soil Nutrient Diagnostic Norms for Pomegranate (Punica granatum L)

A survey was conducted in pomegranate orchards in Bijapur district of northern Karnataka and the diagnostic norms for plant and soil were developed using Diagnosis and Recommendation Integrated System (DRIS). The optimum range of N in leaf (8th leaf pair from tip collected in the month of August) were as follows: 0.91 to 1.66%; P 0.12 to 0.18% and K0.61 to 1.59%. The optimum ranges in soil were: pH 8.1 to 8.6; available N 44 to 103 mg kg⁻¹; available P 10 to 20 mg kg⁻¹; and available K 73 to 115 mg kg⁻¹. An yield level of pomegranate ranging from 15.5 to 18.8 t ha⁻¹ was recorded for the optimum ranges of nutrients indicated above. The norms for other nutrients, the evaluation and classification are reported and discussed.