Author(s): C. MARY HAOKIP, , A. B. SHARANGI, K. DEBBARMA, A.K. RANJITA DEVI and C.S.KARTHIK

Abstract: A field investigation was carried out during 2014-15 and 2015-16 at the Horticultural Research Station, Mondouri, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal to study the role of plant growth regulators on the growth and yield of coriander. The experiment consisting of 6 plant growth regulators along with concentration (GA₃ 25 and 50 ppm, NAA 50 and 75 ppm and IAA 10 and 20 ppm) making six treatment combinations altogether, replicated four times in Randomized Block Design. The study revealed that among the plant growth regulators, GA₃ @ 50 ppm performed better than all the other growth regulators for plant height, number of primary and secondary branches per plant, number of umbels per plant, number of umbellets per umbel, number of seeds per umbel, seed yield, oleoresin and essential oil and took minimum number of days to 50% flowering and maturity followed by NAA @ 75 ppm.

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