Vol. 11, Issue 7 (2022)

Author(s):
Manasa KP and Joshi NS

Abstract:
The present investigation entitled “Effect of growth regulators on vegetative parameters of china aster (Callistephus chinensis L. Nees) cv. Kamini” was carried out in Randomized Block Design (RBD) during the year 2020-21. Among the vegetative characters, the treatment with GA₃ at 200 ppm recorded maximum values for plant height (15.71, 30.61 and 47.03 cm at 30, 60 and 90 DAT, respectively), leaf area (49.13, 84.03 and 114.17 cm² at 30, 60 and 90 DAT, respectively), number of branches (5.83, 9.27 and 12.74 at 30, 60 and 90 DAT, respectively), chlorophyll content (47.13, 56.72 and 68.50 SPAD at 30, 60 and 90 DAT, respectively), fresh and dry weight of the plant (113.32 g and 51.45 g, respectively) over other treatments. Alar at 1500 ppm application resulted in minimum plant height (10.49, 21.09 and 32.96 cm at 30, 60 and 90 DAT, respectively). Alar at 500 ppm application recorded minimum values for leaf area (34.53, 63.53 and 79.17 cm² at 30, 60 and 90 DAT, respectively) and chlorophyll content (35.50, 44.19 and 50.08 SPAD at 30, 60 and 90 DAT, respectively). Therefore, foliar application of GA₃ 200 ppm at 30 and 45 DAT was found to be best in order to get maximum vegetative yield of china aster cv. Kamini.