The investigation was carried out on influence of various plant growth regulators on growth and yield of garlic (Allium sativum L.) in Rabi season during 2019-2020 and 2020-2021 in Terai zone of West Bengal. The PGRs namely- GA3 (50, 100 and 150ppm), NAA (50, 100 and 200ppm) and Kinetin (10, 20 and 40ppm) were used. The experiment laid out in Randomized Block Design comprising of ten treatments and replicated thrice. By using the chemical nutrients high cost of production therefore, the role of different growth regulators on growth and yield of crop investigated. The results obtained that Maximum plant height (80.50cm), leaf length (50.05cm), number of leaves (9.30), neck thickness (13.46mm) and number of roots per plant (74.26), maximum polar and equatorial diameter (3.37 and 4.25cm) with heavier cloves (13.70 g), highest number of cloves per bulb (27.50), fresh and dry weight of cloves (13.70g and 8.31g), higher total biomass yield (4.0kg) and plot yield of bulb (2.85kg) with a projected yield of (9.96 tons) of bulb per ha was registered under GA3 @ 50 ppm.

Garlic, GA3, NAA, Kinetin, growth and yield

In the present investigation, foliar application of plant growth regulators boosted the growth and yield of garlic and based on the current experimental results, it may be concluded that foliar application of GA3 @ 50 ppm proved the best over other treatments of plant growth regulators followed by treatment with Kinetin @ 40 ppm.

Seelothu Rakesh, P.S. Medda, Babli Dutta, Arunava Ghosh and Surajit Khalko (2022). Influence of Various Plant Growth Regulators on Growth and Yield of Garlic (Allium sativum L.) under Terai Region of West Bengal. Biological Forum – An International Journal, 14(4a): 398-404.