Efficacy of Foliar Application of Plant Growth Regulators on Growth and Yield of Chilli (Capsicum annuum L.)

Author: Milu Rani Das and Nilofer Sheikh

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Abstract

The experiment was undertaken in the University of Science and Technology, Meghalaya, during Rabi season, to examine the response of different levels of foliar application of Naphthalene acetic acid (NAA), Chlorocholine chloride (CCC) and Gibberellic acid (GA) on chilli (Capsicum annuum L.) cv. Pusa Jwalaon growth and yield. Application of these plant growth regulators can increase the yield by reducing the flower drop, increasing the fruit set and dry matter accumulation. In this experiment, the treatments considered were NAA at 10ppm and 50ppm, GA 10ppm, CCC 100ppm and GA 10ppm + CCC 100ppm. The experiment was laid out in Randomized Block Design (RBD) with three replications. Results of the experiment showed a significant variation among the treatments. Plant height was observed highest, 24.83cm, 42.00cm and 58.77cm at 30, 60 and 90 DAT respectively with NAA 50ppm concentration. The highest RLWC% and RGR were recorded from plants treated with NAA 50ppm. Application of plant growth regulators extended the shelf-life of harvested chilli fruits to 10 days in NAA treated plants. Maximum number of fruits per plant (47) and yield (117 q/ha) were recorded with NAA treated plants followed by GA 10ppm. Based on the present results, it can be suggested that the use of plant growth regulators have a synergistic effect in increasing plant growth and yield of Chilli by increasing fruit set and dry matter accumulation.

Keywords

NAA, GA3, CCC, Relative Growth Rate, self life, Yield

Conclusion

From the present investigation it is concluded that among the foliar treatments applied, NAA 50ppm concentration was found to be most effective and promising in improving the physiological efficiency and productivity potential of chilli Pusa Jwala in the climatic condition of Ri-Bhoi, District, Meghalaya. The treatments with plant growth regulators can be considered as a suitable cost effective technique to improve yield and quality of chilli.

References

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How to cite this article

Milu Rani Das and Nilofer Sheikh (2023). Efficacy of Foliar Application of Plant Growth Regulators on Growth and Yield of Chilli (Capsicum annuum L.). Biological Forum – An International Journal, 15(4): 239-242.