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An experiment “Effect of foliar application of calcium chloride on yield and quality of apple varieties” was carried out in 2016 at Germplasm unit, (fruit) Agricultural Research Institute Mingora, Swat. Germplasm unit (fruit) is situated in Matta valley Biakan Swat at elevation of 1500 meters above sea level. Three levels of CaCl2 (0, 0.5 and 1.0 gL-1) were sprayed on four different apple varieties (Smoothee, Royal Gala, Jonagored and Junica). The experiment was laid out as Randomized Complete Block Design with two factors having split plot arrangement with three replications. The data were recorded on fruit drop (%), fruit diameter (cm), fruit weight (g), yield tree-1 (kg), yield ha-1 (kg), fruit firmness (kg), percent weight loss, starch content, strife index and juice percentage. Results showed that maximum fruit diameter (6.79 cm), fruit weight (120.50 g), yield tree-1 (34.50 kg), yield ha-1 (9384.90 kg), fruit firmness (7.58 kg), starch content (6.33), strife index (0.04) and juice percentage (58.28) was noted in fruits treated with 1.0 gL-1 of CaCl2. While the highest fruit drop (25.88 %) and percent weight loss (7.10) was recorded in control. The results regarding apple varieties indicated that Jonagored had the highest fruit diameter (7.17 cm), fruit weight (125.44 g), yield tree-1 (36.13 kg), yield ha-1 (9827.66 kg), strife index (0.07), and juice percentage (57.70), while maximum fruit firmness (7.51 kg), percent weight loss (7.32) was recorded in Junica variety. It can be recommended that CaCl2 @ 1.0 gL-1 and variety Jonagored may be used for good yield and quality under the agro-climatic conditions of Swat.
Keywords: Calcium chloride; Varieties; Yield & Quality