Effect of Foliar Spray of NAA and Zinc on Growth, Flowering and Yield Parameters of Guava (Psidium guajava) cv. Lucknow-49 under Western Uttar Pradesh conditions

Author: Vishal Gangwar, Satya Prakash, Arvind Kumar, Vipin Kumar, Bharat Tiwari and Shalini Singh

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Abstract

An experiment was carried out at Horticulture Research Centre, Department of Fruit Science, Sardar Vallabhbhai Patel University of Agriculture & Technology Meerut (U.P.), India, during two consecutive years i.e., 2021-22 and 2022-23 to assess the Influence of foliar application of NAA and Zinc on growth, flowering, fruiting and yield of guava cv. Lucknow-49 under western Uttar Pradesh conditions. By supplying the nutritional requirements of fruit crops, the foliar application of micronutrients and plant growth regulators plays a significant role in controlling numerous physiological phenomena, boosting the yield and quality, and increasing the productivity of plants. Twelve treatments viz., three levels each of NAA (0, 50, 75, and 100 ppm) and Zinc (0, 0.4, 0.6, and 0.8%) with their combinations were used, which were replicated thrice in FRBD from the experiments. Out of the Twelve treatment applied, the results revealed that treatment T12 recorded the highest number of leaves per shoot (15.11 and 15.26), number flower per shoot (20.14 and 20.65) and Maximum fruit yield kg/plant (59.56 and 58.81 kg/plant). Among urea and zinc doses, T4 and T9 were found to be best. In the western Indian Indo-Gangetic plains, the combination can be perfect and advised for the cultivation of guava.

Keywords

Guava, NAA, Zinc, Growth, Flowering, Yield Parameters, Foliar Spray

Conclusion

Based on the aforementioned experiment, it was shown that NAA and zinc had a substantial impact on the development, blooming, and yield characteristics of the guava cv. L-49. One may draw the conclusion that guava plants sprayed with a mixture of NAA 75 ppm + Zinc 0.8% produced the highest possible number of leaves per shoot, flowers per shoot, and yield kg/plant. Zinc 0.8% and NAA 75 ppm worked the best as single dosages. Therefore, it is suggested that under the conditions of western Uttar Pradesh, guava trees be sprayed with a mixture of NAA 75 ppm and zinc (0.8%) three times, beginning one month prior to flowering, at full bloom, and at fruit set, along with suggested cultural practices.

References

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How to cite this article

Vishal Gangwar, Satya Prakash, Arvind Kumar, Vipin Kumar, Bharat Tiwari and Shalini Singh (2023). Effect of Foliar Spray of NAA and Zinc on Growth, Flowering and Yield Parameters of guava (Psidium guajava) cv. Lucknow-49 Under Western Uttar Pradesh conditions. Biological Forum – An International Journal, 15(9): 989-993.