Influence of integrated nutrient management on fruiting, yield and physico-chemical attributes of aonla cultivar NA-7

An experiment was carried out in the Garden, Department of Fruit Science, C. S. Azad University of Agriculture and Technology, Kanpur (U.P.) India, during 2024 using nine treatments viz., T₁-75% RDF of NPK + 2.5 kg vermicompost, T₂-75% RDF + 4.5 kg vermicompost, T₃-75% RDF + 2.5 kg vermicompost + 100g Azotobacter, T₄- 75% RDF + 4.5 kg vermicompost + 100g Azotobacter, T₅-75% RDF+ 2.5 kg vermicompost + 100g PSB, T₆-75% RDF + 4.5 kg vermicompost + 100g PSB, T₇-75% RDF + 2.5 kg vermicompost + 100g Azotobacter + 100g PSB, T₈-75% RDF + 4.5 kg vermicompost + 100g Azotobacter + 100g PSB including a control(T₀) treatment i.e., 100% RDF on twenty-four years old aonla cv. NA-7 trees, replicated thrice in a Randomized Block Design. From the experiment, it is recorded that the application of 75% RDF + 4.5 kg Vermicompost +100g Azotobacter +100g PSB (T₈) significantly maximize fruit set (42.56%), reduces fruit drop (65.67%) with increased fruit retention (34.33%), fruit yield (80.88kg/plant), fruit length (3.99cm), width (4.79cm), volume (48.30cc), weight (49.85g), pulp weight (47.95g), TSS (13.35⁰Brix), ascorbic acid (598.98mg/100g pulp), total sugars (7.20%) with minimum stone weight (1.90g) and titratable acidity (1.32%) followed by 75% RDF of NPK + 2.5kg vermicompost + 100g Azotobacter +100g PSB (T₇) as compared to control (T₀) treatment in the plains of northern India.