STANDARDIZATION OF NITROGEN DOSE FOR QUALITY FLOWER AND BULB PRODUCTION IN ORIENTAL AND LA HYBRID LILIES
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Date
2019-10
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UHF,NAUNI
Abstract
ABSTRACT
The present investigation entitled “Standardization of nitrogen dose for quality flower and
bulb production in Oriental and LA hybrid lilies” was carried out at Experimental Farm of
Department of Floriculture and Landscape Architecture, Dr YS Parmar University of Horticulture and
Forestry, Nauni, Solan (HP) during 2017 to 2018. The experiment was laid out in a Randomized
Block Design (factorial) consisting of six Lilium cultivars i.e. ‘Acapulco’, ‘Justina’, ‘Signum’,
‘Sorbonne’ (Oriental), ‘Nashville’ and ‘Pavia’ (LA) and five nitrogen treatments i.e. 0 g (control), 10
g, 15 g, 20 g and 25 g N/m2 with three replications. The level of phosphorus and potassium was kept
constant at 20 g/m2. The fertilizers were applied in 10 equal split doses starting from one month after
planting. Findings of the experiment revealed that among different nitrogen doses, application of 15 g
N/m2 gave best results for plant height (65.58 cm), number of leaves (43.39), earliest flowering
(137.55 days), number of flowers per stem (3.07), flower diameter (14.59 cm), stem length (47.60
cm), duration of flowering (12.30 days), vase life (10.44 days), number of bulbs per plant (1.10),
weight of bulb (28.79 g), number of bulblets per stem (2.94) and bulblet weight (1.76 g). However,
the application of 10 gN/m2 proved to be best for earliest bud initiation (92.88 days), bud length (8.39
cm), diameter of bulb (3.79 cm) and bulblet diameter (1.04 cm). Among different cultivars, LA
cultivar ‘Nashville’ resulted in better vegetative growth, flowering and bulb production over all other
cultivars. However, in Oriental group, cultivar ‘Acapulco’ performed better for flower production.
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