Impact of pre- harvest foliar spray of nutrients and agrochemicals on fruit yield and quality of ber (Zizyphus mauritiana)

A field experiment was conducted to find out the impact of pre- harvest foliar spray of nutrients and agrochemicals on fruit yield and quality parameters of ber (Zizyphus mauritiana Lamk) during 2022–23 and 2023–24 at SKN College of Agriculture, Jobner, Rajasthan. Among nutrients and agrochemicals, application of T₁₁ (ZnSO₄ @ 4g/L + CaCl₂ @ 2g/L + chitosan @ 1.5g/L +salicylic acid @ 1g/L) to individual plants was significantly superior to all other treatments, but it was on a par with T₉ (CaCl₂ @ 2g/L + salicylic acid @ 1g/L), T₇ (ZnSo₄ @ 4g/L + salicylic acid @ 1g/L) and T₅ (ZnSO₄ @ 4g/L + CaCl₂ @ 2g/L). In treatment T₁₁ (ZnSo₄ @ 4g/L + CaCl₂ @ 2g/L + chitosan @ 1.5g/L + salicylic acid @ 1g/L), an increase in days taken to first harvesting (137.00 days), days taken to complete harvesting (57.11 days), fruit weight (18.51 g), diameter of fruits (3.59 cm), fruit yield (38.01 kg/tree), fruit yield (105.68 q/ ha), maximum TSS% (19.05 °Brix) and minimum titratable acidity (0.415 %) were recorded.