Effect of plant growth retardants on potted hibiscus

Abstract

An experiment was conducted to study the effect of plant growth retardants on growth and flowering of potted hibiscus plants grown in pot during 2017-18 and 2018-19. Application of cycocel, alar and paclobutrazol at different concentrations found significant influencing the vegetative growth, flowering parameters and plant pigments of Hibiscus rosa- sinensis plants during both the years as compared to untreated plants (control). Reduced plant height, plant spread and minimum leaf area was found in plants treated with 75 ppm paclobutrazol respectively at 15, 30 and 60 days after spraying (DAS). Maximum number of branches, number of leaves, number of flowers per plant, flower diameter, chlorophyll content in leaves and anthocyanin pigment content in flowers were observed with application of 3000 ppm cycocel respectively at 15, 30 and 60 days after spraying (DAS).