Effect of Nitrogen, Bulb Size and Plant Density on Growth, Flowering and Yield of Tuberose (Polianthes Tuberosa L.)

In the multifactor studies in tuberose the best performance was projected with the application of 300 kg N/ha, planting larger bulbs (2.6–3.0 cm) and wider spacing of plants i.e., 30 cm apart. Application of nitrogen hastened the sprouting while largest size bulb delayed it. Minimum days for scape emergence were found at 200 kg N/ha and planting larger bulbs with lowest plant density. Spike length, floret number per spike, number of spikes per clump and bulb production in terms of quality and quantity were increased with increasing level of nitrogen, bulb size and planting distance.