Influence of different Levels of NAA and 2, 4, 5-T on Fruit Quality of Indian Ber (Zizyphus mauritiana Lamk.)

Author: Manoj Kumar, A.K. Dwivedi, V.K. Tripathi and Akash Shukla

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Abstract

The experiment was carried out at Horticulture Garden, Department of Fruit Science, C. S. Azad University of Agriculture and Technology, Kanpur (U.P.) during two subsequent years i.e., 2020-21 and 2021-22 on 48 years old plants of cv. Banarasi Karaka. These plants were pruned every after four years to maintain uniformity in growth and fruiting height. For this experiment there were sixteen treatments viz., four levels each of NAA (0, 20, 30 and 40 ppm) and 2,4,5-T (0, 10, 20 and 30ppm) were studied in a Factorial Completely Randomized Design with three replications. Spraying of these plant bio-regulators was done on the eleventh of November, 2020 in the first year and fifteenth of November, 2021 in the second year at pea stage of fruit setting stage with a fine nozzle sprayer in each treatment to give uniform spray on ber plant. Application of NAA @ 40 ppm and 2,4,5-T @ 30 ppm produced fruits with significantly more pulp weight (34.65 and 34.70 g), maximum pulp: stone ratio (35.62 and 35.82) and minimum acidity percentage (0.08 and 0.07%). Total soluble solid content was significantly increased (16.75 and 17.12°Brix) by application of NAA @ 40 ppm and 2,4,5-T @ 30 ppm during both years of experimentation. The maximum TSS: acid ratio (211.54 and 239.92), maximum vitamin-C (92.30 and 93.66 mg) was also recorded with the treatment of NAA @ 40 ppm and 2,4,5-T @ 30 ppm. The highest reducing sugar content (4.91 and 4.93 %) was recorded with treatment combination of N2A3 (NAA @ 30ppm and 2,4,5-T @3 0ppm). The maximum non-reducing sugar (5.30 and 5.70 %), maximum total sugar content (10.62 and 8.61 %) was significantly found under NAA @ 40 ppm and 2,4,5-T @ 30 ppm during both the years of experimentation in the plains of northern India.

Keywords

2,4,5-T, TSS, Titratable acidity, NAA, Total sugar, Non-reducing sugar, Reducing sugar, Pulp weight

Conclusion

It may be concluded that the application of NAA and 2,4,5-T resulted in the quality of Indian ber with maximum TSS (Total Soluble Solid), Titratable acidity, Vitamin-C mg/100g of pulp), Total sugar which ultimately increased the quality of ber fruit with NAA @ 40ppm and 2,4,5-T@ 30ppm during both years of experiments.

References

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How to cite this article

Manoj Kumar, A.K. Dwivedi, V.K. Tripathi and Akash Shukla (2023). Influence of different Levels of NAA and 2, 4, 5-T on Fruit Quality of Indian Ber (Zizyphus mauritiana Lamk.). Biological Forum – An International Journal, 15(3): 352-357.