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Effect of Foliar Application of GA3 on Flowering, Flower Quality and Yield of Lupin (Lupinus perennis L.) under Hill Zone of Karnataka

Author: Pushpa H.A., Chandrashekhar S.Y., Hemlanaik B., Hanumantharaya L. and Ganapathi M.

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Abstract

Gibberellic acid plays a major role in plant growth and development. It has been found to be the best for enhancing both vegetative and flowering attributes in flower crops. With this background, an experiment under Hill Zone of Karnataka was conducted at the Experimental block of Floriculture and Landscape Architecture, College of Horticulture, Mudigere, during the year 2021-2022. The experiment was laid out in Randomized Block Design, comprising seven treatments with three replications. Observations were recorded on various flowering and yield parameters. Among the different treatments, GA3 @ 350 ppm taken minimum days for first flower bud initiation (46.80), flower stalk emergence (48.60), 50 percent flowering (22.30) and maximum duration of flowering (61.90 days). However, maximum number of florets per spike (120.50), diameter of the floret (1.39 cm), stalk length (59.78 cm), number of stalks per plant (9.10) and vase life (4.98 days) was recorded in the treatment GA3 @ 300 ppm. While, minimum was recorded in control. Hence, it is concluded that spraying (thrice) of Gibberellic acid @ 300 ppm at an interval of 30, 60 and 90 days after sowing proved to be promising for enhancing the flower quality and yield of lupin under hill zone of Karnataka.

Keywords

Lupin, gibberellic acid, flowering, flower quality and yield

Conclusion

On the basis of the result obtained in the present investigation it is concluded that, foliar application of GA3 @ 300 ppm proved significant for improving the flowering, flower quality and yield of lupin under open field condition. Hence, the treatment GA3 @ 300 ppm may be recommended for commercial cultivation of lupin under hill zone of Karnataka.

References

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How to cite this article

Pushpa H.A., Chandrashekhar S.Y., Hemlanaik B., Hanumantharaya L. and Ganapathi M. (2022). Effect of Foliar Application of GA3 on Flowering, Flower Quality and Yield of Lupin Lupinus perennis L.) Under Hill Zone of Karnataka. Biological Forum – An International Journal, 14(4): 737-741.