Effect of foliar application of gibbrelic acid on carnation (Dianthus caryophyllus Linn.) cultivars growing under polyhouse in south Saurashtra condition

摘要

Four cultivars of carnation were sprayed with GA, (0, 50, 100 and 150 ppm). Gaudina shows highest plant height (62.33 cm), while highest number of axillary branches (12.82) per plant, largest flower diameter (6.52 cm) and highest cut flowers (9.78) per plant was found in Firato. Viking was found highly susceptible to Fusarium wi root rot and stem rot diseases of carnation. GA3 at 150 ppm had recorded maximum plant height (57.75 cm), highest number of axillary branches per plant (11.46), early budinitiation (126.43 days) and maximum numbers of flowers (10.24) per plant. The highest flower diameter (6.73 cm) was found with 50 ppm GA3.