Improving growth, yield and quality of Kinnow mandarin through foliar application of potassium and zinc

摘要

Present investigation was carried out at Krishi Vigyan Kendra, Chittorgarh, Rajasthan. The experiment consists of 10 foliar K and Zn application treatments. Among the treatments, combined application of 1.5 per cent potassium nitrate + 0.1 per cent EDTA Zinc (T-4) was found best for vegetative growth (plant height, canopy volume, shoot length), treatment (T-7) with 1.5 per cent potassium phosphate + 0.1 per cent EDTA zinc was found best for yield (fruit retention, number of fruit plant(-1), fruit weight, fruit diameter (equatorial & polar), yield plant(-1), estimated yield(-1)) and treatment (T-10) with 1.5 per cent potassium sulphate + 0.1 per cent EDTA zinc resulted into highest quality (TSS, acidity, TSS/acid ratio, reducing sugar, total sugars, ascorbic acid, rind thickness and juice content), fruit and leaf nutrient status (NPK and Zn).