Ten year old plants of peach cv. Shan-i-Punjab were sprayed in order to examine the efficacy of three levels of nutrients which include calcium chloride (1, 2 and 3%), potassium nitrate (1, 2 and 3%) and (2- chloro-4pyridyl) 3- phenyl urea (1.25, 2.50 and 5ppm)at 25 days before harvesting. Fruits from treated plants were picked at physiological maturity stage, then the fruits were immediately carried to the laboratory for sorting and packaging in CFB boxes and then stored in cold store (0 to 30C temperature and RH 85-90%). The results revealed that fruits treated with CPPU observed mean maximum titrable acidity and mean minimum TSS:acid ratio, total sugars ,reducing sugars. While fruits treated with potassium nitrate observed maximum mean TSS:acid ratio, total sugars, reducing sugars and mean minimum titrable acidity.