Study of nitrogen and GA3 on growth, flowering and bulbs production of tuberose (Polianthes tuberosa L.) cv. Double

Abstract

The present investigation was conducted at Horticultural Research Farm J. V. College, Baraut, Baghpat. The experiment carried out following Complete randomized design (CRD) with three replications of eight treatment combinations including three levels GA3 and single dose of nitrogen, In which Tuberose (Polianthes tuberosa L.) cv. Double is used to effect on growth, flowering and bulb production response of GA3 (100, 150 and 200 ppm) and single dose of nitrogen 7g along with having control, these doses were applied with check. Growth regulators results also indicated that, GA3 150 ppm and nitrogen @7g/pot decreases the days to sprouting and increases maximum number of sprout per bulb as compared to other treatment of gibberellic acid, while GA3 200 ppm and nitrogen @ 7 g observed the better effect on , number of leaves per plant, length of leaf, days taken to first flowering spike initiation, number of florets per spike, length of spike, number of spikes per plant, weight of spike and bulb production bulbs per plant of tuberose in western Uttar Pradesh condition.