Beniwal, B.S.Nain, Sheena2019-01-092019-01-092018http://krishikosh.egranth.ac.in/handle/1/5810089460The present investigation “Effect of nutrient, bulb size, spacing and planting method on flowering and yield of Tuberose (Polianthes tuberosa L.)” cv. Prajwal was carried out at Experiment farm of Department of Horticulture during the year 2016-17 and at Botanical garden of Department of Plant Physiology, CCSHAU, Hisar during 2017-18. Two individual experiments were laid out. In first experiment, four levels of nitrogen (0, 10, 15, & 20 g/m2) and three levels of phosphorus (0, 5 and 10 g/m2 ) were applied, while in second experiment three bulb size (0.5-1.5, 1.5-2.5 and 2.5-3.5 cm), two levels of spacing (20×20 and 30×30 cm) and two planting method (flat bed and ridge) were applied. Both the experiments were laid out in randomized block design with three replications. The observations were recorded on various growth, flowering and yield parameters. The Statistical analysis of data of first experiment revealed that better results in terms of growth, flowering, spike yield and bulb yield of tuberose were found when nitrogen @ 20g/m2 with phosphorus @ 10g/m2 was applied. In second experiment, large bulb size of diameter (2.5-3.5 cm) at wider spacing (30x30 cm) on ridge planting showed better results in terms of growth and flowering in tuberose, while large bulb size of diameter (2.5-3.5 cm) at closer spacing (20x20 cm) on ridge showed the better results in terms of plant height, spike per plot, spike per hectare and bulb yield during both the years of study.ennullThesis