Vol. 10, Issue 3 (2021)

Author(s):
Mukesh Kumar Sahu, T Tirkey, SK Tamrakar, SP Tiwari, N Shukla, LS Varma and Deo Shankar

Abstract:
The present investigation was conducted during rabi season of 2018-19 and 2019-20 at Horticultural Research cum Instructional Farm, Department of Floriculture and Landscape Architecture, Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.). The field experiments was laid out in Factorial Randomized Block Design with three replications having twenty one treatment combinations of two plant growth retardants their three doses each i.e. Paclobutrazol (PBZ) at 50, 100 and 150 ppm and Cycocel (CCC) at 500, 750 and 1000 ppm along with water spray (control) as factor A and three time of application viz. 30 DAT, 45 DAT and 30 and 45 DAT as factor B. Among the different treatments of plant growth retardants the significantly maximum vase life (days) and self life (days) were observed with application of Paclobutrazol (PBZ) at 50 ppm during both the years as well as on mean basis. Whereas, significantly maximum flower diameter (cm) and fresh weight of flower (g) of African marigold were recorded with application of Paclobutrazol (PBZ) at 150 ppm during both the years and on mean basis. The result revealed that among the time of application of plant growth retardants at 30 DAT recorded significantly highest vase life (days), self life (days), flower diameter (cm) and fresh weight of flower (g) of marigold during both the years and on mean basis.