EFFECT OF NANO NPK FERTILIZER APPLICATION ON GROWTH, FRUIT YIELD AND QUALITY OF SAPOTA (Manilkara achras Mill Fosberg) Cv. KALIPATTI
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Date
2023-01-31
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The experiment was conducted to study the effect of nano NPK fertilizer application on growth, fruit yield and quality of sapota (Manilkara achras Mill Fosberg) Cv. Kalipatti during the years 2020-21 and 2021-22. The pooled data from two successive years for sapota tree revealed that treatment consisting of 50 per cent RDF with foliar application of 0.3 per cent nano NPK fertilizer had significant influence on parameters like plant height (3.71 m), plant spread in East-West (8.83 m) and North- South (8.48 m) direction, less number of days taken for flower initiation (28.50 days),
maximum number of flowers per shoot (39.00), per cent fruit set (81.67 %), less duration of flowering (28.00 days), fruit length (6.47 cm), fruit width (5.35 cm), fruit volume (77.33 ml), circumference of the fruit (23.70 cm), fruit weight at harvest stage (155.00 g) and at ripe stage (132.33 g), fruit pulp weight (25.17 g), number of fruits per shoot (32.00), number of fruits per tree (1441.33), average fruit weight (119.83 g), yield per tree (169.56 kg) and yield per hectare (16.96 t) with the benefit cost ratio of 7.77. The treatment consisting of 50 per cent RDF with foliar application of 0.2 per cent nano NPK fertilizer was recorded greater values for parameters like TSS (21.00 oBrix), shelf life (6.83 days), fruit firmness (72.51 N), physiological loss in weight of fruits (2.16 %), acidity (0.16 %) and overall acceptability of fruits (5.00). Chlorophyll content (2.17 mg/g), reducing and total sugars were found maximum (9.24 % and 22.02 % respectively) in treatment consisting of 50 per cent RDF with foliar application of 0.1 per cent nano NPK fertilizer.
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