Vol. 12, Issue 12 (2023)

Author(s):
Jemini Patel, Bhavesh Patel, Tejal Patel and TR Ahlawat

Abstract:
A field experiment on “Influence of plant growth regulators on growth, flowering and yield of china aster” was conducted at Floriculture Research Farm, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari during the Rabi season of 2020-2021. The experiment comprised of ten treatments viz., GA₃ 100 ppm, GA₃ 150 ppm, GA₃ 200 ppm, Salicylic acid 50 ppm, Salicylic acid 100 ppm, Salicylic acid 150 ppm, NAA 100 ppm, NAA 150 ppm and NAA 200 ppm along with no (water) spray. The experiment was laid out in randomized block design (RBD) with three replications in china aster var. ‘Arka Archana’. Plant growth regulators were applied as foliar spray at 30 and 45 days after transplanting. The findings reveal that the various treatments had distinct impacts on the growth measures. Among different concentrations of plant growth regulators, GA₃ 200 ppm was found numerically highest in plant height, number of primary branches per plant, stem diameter, plant spread at 45 and 60 DAT. An advanced 50% flower bud appearance and 50% flowering with maxium flower diameter, flower stalk length, shelf life, weight of ten flowers were also recorded with the application of GA₃ @ 200 ppm.