Effect of plant growth regulators on growth, flowering and yield of chrysanthemum (Dendranthema grandiflorum)

An experiment entitled “Effect of plant growth regulators on growth, flowering and yield of chrysanthemum (Dendranthema grandiflorum)” was carried out at Pt. Kishori Lal Shukla College of Horticulture and Research Station, Pendri Rajnandgaon (C.G.) during the year 2022-23. The experiment was laid out in Randomized Block Design with ten treatments and three replications. The purpose of research was to observe the effect of different concentrations of Gibberellic acid (100, 200, 300 ppm), Salicylic acid (50, 100, 150 ppm) and Cycocel (1000, 1500, 2000 ppm) in chrysanthemum plants vegetative growth, flowering parameters and yield attributes. The result revealed that GA3 300 ppm recorded maximum plant height (85.41 cm), days to first flower bud initiation (67.23 days), minimum days to flower opening from bud emergence (8.34 days), days to 50 percent flowering (99.03 days), maximum flower yield per plant (115.67 g), maximum flower yield per hectare (128.52 q), CCC 2000 ppm recorded maximum number of branches per plant (18.40), maximum number of leaves per plant (190.36), maximum stem diameter (2.78 mm), higher plant spread (24.80 cm) in (N-S) and (24.90 cm) in (E-W) direction, maximum number of flower per plant (45.42). In research, control was reported minimum for every trait except CCC 2000 ppm which showed minimum result for plant height from different concentrated PGR taken in the investigation.