1Department of Floriculture and Landscape Architecture, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan-173230, Himachal Pradesh, India
2Department of Soil Science and Water Management, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan-173230, Himachal Pradesh, India
Department of Seed Science and Technology, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan-173230, Himachal Pradesh, India
*Email for correspondence: priyanka.pk181@gmail.com
Online published on 2 May, 2018.
The present investigations were carried out to work out the optimum doses of nitrogen and potassium for growth and flowering of pansy. The experiment was laid out in a randomized block design (factorial) with 4 levels of nitrogen (0, 20, 30 and 40 g N/m2) and 4 levels of potassium(0, 10, 20 and 30 g K/m2) along with uniform doses of FYM @ 5 kg/m2 and P @ 20 g/m2 except the control. In all 16 treatment combinations of nitrogen and potassium were replicated thrice. Among different levels of nitrogen 40 gN/m2 recorded maximum values wrt time taken to first flowering (82.08 days), plant height (33.30 cm), plant spread (36.28 cm), number of flowers per plant (159.92), number of flowers per plot (1439.25), size of flower (4.37 cm) and duration of flowering (89.17 days). Maximum days to first flowering (77.08 days), plant height (29.96 cm), plant spread (32.65 cm), number of flowers per plant (153.92), number of flowers per plot (1385.25), size of flowers (4.16 cm) and duration of flowering (88.75 days) were observed with the applicationof 30 g K/m2. The interaction40 g Nx 30 g K/m2 recorded maximum values in terms of most of the growth and flowering parameters of commercial importance. Hence it is concluded that for better growth and flowering the pansy plants be fertilized with N: K @ 40: 30 g/m2 along with a constant dose of FYM @ 5 kg/m2 and P @ 20 g/m2.
Nitrogen, potassium, pansy, growth, flowering, fertilizer
