Impact of different planting dates and spacing on the performance of annual chrysanthemum (Glebionis coronaria L Spach)

A field experiment was conducted at the experimental farm of the department of Floriculture and Landscape Architecture, Dr YSP, UHF, Nauni during November, 2021 to April, 2022 in a Randomized Block Design. Twenty four treatments combinations of two cultivars Shubra and Local Collection four levels of spacing viz.,15x15cm, 20x20cm, 25x25cm and 30x30cm with three planting dates i.e. November,10 November,30, and December,20. To study the impact of different planting dates and spacing on the performance of annual chrysanthemum (Glebionis coronaria L Spach). The observations recorded were based on vegetative, flowering and seed parameters. The result revealed that cv. Shubra performed better as compared to cv. Local Collection in terms of vegetative, flowering and seed parameters. Among the different levels of spacing, 30x30 cm resulted in maximum plant spread (40.40 cm), number of branches (17.15), number of flowers per plant (62.83), flower diameter (5.50cm), number of seeds per flower head (233.37) and seed yield per plant (7.42g) whereas, spacing of 15x15cm resulted in maximum plant height (96.87cm), flower yield per picking (2209.98g/m2) and seed yield per plot (110.22g) as well as minimum number of days taken to flower bud formation (68.05 days), number of days taken to flowering (106.84 days).When compared to other planting dates, plant height (99.20cm),plant spread (33.75cm), number of branches (17.22), number of flowers per plants (49.19), flower diameter (5.32 cm), flower yield per picking (2203.71g/m2), number of seeds per flower head (233.30), seed yield per plant (5.52g) and seeds yield per plot (101.05g) were recorded maximum in November,10 planted crops while, December, 20 planted crop resulted in minimum number of days taken to bud formation (66.76 days) and minimum number of days taken to flowering (94.96 days).