Abstract            Volume:6  Issue-3  Year-2018         Original Research Articles

Online ISSN : 2347 - 3215 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcret@gmail.com

The present Study entitled Effect of Potassium nitrate, GA₃ and Salicylic acid on fruit yield and quality of peach cv. Shan-i-Punjab was carried out in a well maintained Peach orchard of Khalsa College, Amritsar during 2016-2017. In the trial, 30 peach trees with uniform size and vigour were selected and were sprayed with KNO₃ @ 1.00, 2.00 & 3.00 per cent and plant growth regulators SA @ 0.50, 1.00 & 1.50 mM and GA­₃ @ 25, 50 & 100 ppm before harvesting to find out the optimum concentration of these chemicals for improving the fruit yield and quality characters. The investigation was laid out in RBD (Randomised Block Design) with ten treatments which replicated thrice.The results of present study revealed that the fruit physical characteristics were significantly improved with the application of GA₃ and biochemical characters were significantly improved with the spray of potassium nitrate. Significant fruit length (6.25 cm), fruit breadth (5.35 cm), fruit weight (93.04 g), fruit set (69.70%) and fruit yield (63.23 kg/tree) were recorded under treatment GA₃ 100 ppm whereas fruit TSS (11.33 %), TSS: acid ratio (24.39), reducing sugars (2.69 %), total sugars (6.91 %) and organoleptic rating (9.00) were recorded under treatment T₃ (KNO₃ 3.00 %). The former treatment also produced yellow colored fruits with red blush and reduced titratable acidity.

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