Influence of Bio-enhancers and Bio-fertilizers on Physical and Biochemical Traits of Aonla (Emblica officinalis Gaertn.) cv. NA-7

The present investigation was carried out on 22-year-old aonla (Emblica officinalis Gaertn.; variety NA-7) trees during the years 2023 and 2024 at Kalyanpur Nursery, Department of Fruit Science, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur. The design of the experiment was randomized block design with three replications involving ten treatment combinations formed by applications of Azotobacter, PSB, Amritpani, Jeevamrit and Panchagavya. Significant improvements were recorded on the growth, flowering and yield traits, with T9 (Azotobactor(5 g/tree) + PSB (50 g/tree + Amritpani (10 %) + Panchagavya (5 %) consistently outperforming others. Among the evaluated treatments, T9 (Azotobactor(5 g/tree) + PSB (50 g/tree +Amritpani (10 %) + Panchagavya (5 %) exhibited the highest performance in key physical and biochemical traits, recording highest fruit length (3.82, 3.93 and 3.88cm), fruit diameter (4.34, 4.43 and 4.39cm), fruit volume (33.42, 33.38 and 33.40cc), pulp weight (33.89, 35.13 and 34.51g), fruit weight (35.41, 36.62 and 36.02 g), specific gravity (1.16, 1.17 and 1.17 g/cm3) and pulp: stone ratio (22.30, 22.33 and 22.32) and lowest stone weight (1.52, 1.50 and 1.51g), stone diameter (1.92, 1.93 and 1.92 cm). Among varous biochemical traits, fruits in T9 also results in the highest total soluble solids (10.46, 10.55 and 10.51 0Brix), total sugars (5.47, 5.52 and 5.50%), total soluble solids: acid ratio (6.41, 6.55 and 6.48), fruit juice (64.36, 64.73 and 64.55%), ascorbic acid (547.53, 549.11 and 548.32 mg), and total phenolic acid (170.24, 170.28 and 170.26 mg/100g) respectively, with minimum tanin content (2.12, 2.16 and 2.14%), titratable acidity (1.63, 1.61 and 1.62% respectively) during both rears of investigation and when data were pooled for both years in the plains of north India.