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In order to explore the possibility of improving the quality, productivity and profitability of tuberose (Polianthes tuberosa L.) cv. Prajwal using different plant bioregulators, an experiment was conducted during 2015-16 and 2016-17 at Horticultural Research Station, Kovvur of Dr. YSR Horticultural University, Andhra Pradesh. Five plant bioregulators (Gibberellic acid, Benzyl Adenine, Salicylic acid, Ethephon and Spermidine) each at two concentrations in addition to water spray as control were evaluated in randomised block design with three replications. The results revealed that the foliar sprays of plant bioregulators at 30 and 60 days after sprouting of bulbs, significantly influenced floret quality, floret yield and bulb yield. Significantly maximum length (6.12 cm), diameter of floret (4.34 cm), 100floret weight (210.85 g), floret yield (12.02 t ha -1 ) and bulb yield (11.57 t ha -1 ) was recorded in the plants sprayed with GA3 at 200 ppm over control. The same treatment recorded the highest benefitcost of 3.02.

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