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Effect of Soil K Nutrition on Mineral Composition and Fruit Quality of Apple (Red Delicious) Under Temperate Conditions
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Four different levels of potassium (K) viz., K0, K750, K1500 and K2250 g K2O/tree as soil application were applied to estimate the effect on mineral composition and fruit quality of apple cv. RED DELICIOUS, subsequently it was observed that increase in K levels from K0 to K2250 significantly increased the leaf K and Fe content, whereas it significantly decreased the content of P, Ca, Mn, Zn and Cu. Fruit quality parameters like fruit weight, length and diameter increased significantly with K application upto K2250 level and was at par with level K1500. Fruit TSS and colour also showed increased trend with a simultaneous decrease in fruit acidity.
Keywords
Soil Potassium, Nutrient Concentration, Fruit Quality, Apple.
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