Impact of integrated nutrient management on leaf nutrient content in Nagpur mandarin

The experiment was conducted in the orchard, at Regional Fruit Research Station, Katol, Dr. Panjabrao Deshmukh Krishi Vidyapeeth during 2021-22. The study was initiated in an eleven-year-old Nagpur mandarin orchard under normal planting density (6 m x 6 m). The experiment was laid out in Randomized Block Design (RBD) with nine treatments comprising various combinations of FYM, biofertilizers, RDF and foliar spray of micronutrients with three replications. The treatments comprise T1- Only FYM @ 50 kg tree-1 + Biofertilizers, T2- 100 % Recommended dose of NPK, T3-100 % Recommended dose of N only + FYM @ 50 kg tree-1 + Biofertilizers, T4-100 % Recommended dose of N and P + FYM @ 50 kg tree-1 + Biofertilizers, T5- 100 % NPK + FYM @ 50 kg tree-1 + Biofertilizers, T6- 100 % NPK + FYM @ 50 kg tree-1 + Biofertilizers + S, T7- 100 % NPK + FYM @ 50 kg tree-1 + Biofertilizers + S + Zn, T8- 100 % NPK + FYM @ 50 kg tree-1 + Biofertilizers + S + Zn + Fe, T9- 100 % NPK + FYM @ 50 kg tree-1 + Biofertilizers + S + Zn + Fe + B. The results of the present study revealed that, the leaf nutrients content increased with the combined application of different treatments as compared to their individual application. The integrated nutrient management recorded the maximum leaf macronutrient content like total nitrogen (2.52 %), phosphorus (0.15 %), potassium (1.49 %) and sulphur (0.19 %).