Vol. 12, Issue 12 (2023)

Author(s):
Rahul Patel, MK Sharma, DK Vasoya, PN Patel and Kiran Kumari

Abstract:
The investigation was tried for figure out the effect of planting dates and integrated nitrogen management on growth, yield and quality of tuberose (Polianthes tuberosa L.)The experiment was laid out in split plot design with three date of planting viz. 15^th March (P₁), 1^st April (P₂) and 15^th April (P₃) as main treatments and five integrated nitrogen management combinations i.e., 100 percent recommended dose of nitrogen (N₁), 40 percent recommended dose of nitrogen through FYM + 40 percent recommended dose of nitrogen through urea + NPK consortium (N₂), 40 percent recommended dose of nitrogen through vermicompost + 40 percent recommended dose of nitrogen through urea + NPK consortium (N₃), 30 percent recommended dose of nitrogen through FYM + 30 percent recommended dose of nitrogen through urea + NPK consortium (N₄) and 30 percent recommended dose of nitrogen through vermicompost + 30 percent recommended dose of nitrogen through urea + NPK consortium (N₅) as sub-treatments which were replicated thrice. The results revealed that planting of tuberose bulbs on 15^th April had taken minimum days to sprouting of bulb (11.49 days) and brought significant increase in plant height (39.20 cm), number of leaves (39.38 plant^-1) at 90 days after planting, number of spike (5.29 plant^-1, 55.40 plot^-1 and 683.95 thousands ha^-1), weight of floret per plant (287.58 g) and floret yield (1.81 kg plot^-1 and 225.51 q ha^-1), length of spike (80.20 cm) and rachis (36.61 cm), floret weight (3.37 g), number of florets (46.93 spike^-1) and vase life (10.98 days). The minimum taken for emergence of first spike (119.75 days) and opening of first floret (133.45 days) was also recorded with 15^th April planting. Among integrated nitrogen management treatments, N₃(40% RDN through vermicompost + 40% RDN through urea + NPK consortium) recorded maximum plant height and number of leaves per plant (40.93 cm and 41.67 at 90 days after planting, respectively), number of spike (5.29 plant^-1, 55.40 plot^-1 and 683.95 thousands ha^-1), weight of floret (287.58 g plant^-1), floret yield (1.81 kg plot^-1 and 225.51 q ha^-1), length of spike (80.37 cm) and rachis (38.52 cm), weight of floret (3.49 g), number of floret (44.05 spike^-1) and vase life (11.99 days). Same treatment also taken minimum taken number of days to emergence of first spike (119.75 days) and opening of first floret (133.45 days). Among the P x N interactions, maximum plant height (46.65 cm) and number of leaves (47.34 plant^-1) at 90 days after planting, number of spike (6.46 plant^-1, 66.67 plot^-1 and 823.05 thousand ha^-1), weight of florets (300.14 g plant^-1), floret yield (2.32 kg plot^-1 and 286.83 q ha^-1) were recorded with P₃N₃ treatment combination.