EFFECT OF ORGANIC AND INORGANIC FERTILIZATION ON GROWTH AND FLOWERING OF CHRYSANTHEMUM IN RESPONSE TO STAGGERED PLANTING
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Date
2024-04-09
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UHF Nauni
Abstract
The present investigation entitled, “Effect of organic and inorganic fertilization on growth
and flowering of chrysanthemum in response to staggered planting” was carried out at the
experimental farm of Department of Floriculture and Landscape Architecture, Dr YS Parmar
University of Horticulture and Forestry, Nauni, Solan (H.P) during 2021-22 & 2022-23 under open field
conditions. The experiment comprised of 24 treatment combinations of two cultivars (‘Purnima’ and
‘Solan Shringar’), six planting dates (15 June, 30 June, 15 July, 30 July, 15 August and 30 August), two
fertilization modules i.e. inorganic (RDF) and organic (Jeevamrit @ 30 ml/plant as drenching at 15 days
interval). Findings revealed that June 15 planted crop of ‘Solan Shringar’ under the influence of inorganic
fertilization recorded maximum plant height (76.18 cm and 86.64 cm, respectively), plant spread (33.52
cm and 38.04 cm, respectively), number of cut stems per plant (5.13 and 5.53, respectively), length of cut
stem (65.68 cm and 75.03 cm, respectively), stem strength (9.70o and 9.17o, respectively), duration of
flowering (23.00 days and 26.33 days, respectively) and b.c ratio (1.82 and 1.93, respectively) during both
the years. Whereas, June 15 planted crop of ‘Purnima’ under inorganic fertilization module recorded
maximum flower diameter (11.46 cm and 12.14 cm, respectively), available nitrogen in soil (325.84 kg/ha
and 327.21 kg/ha, respectively), available phosphorous in soil (39.37 kg/ha and 41.35 kg/ha, respectively)
and available potassium in soil (358.90 kg/ha and 360.05 kg/ha, respectively) during both the years. June
15 planted crop of ‘Purnima’ under organic fertilization module proved better for vase life (17.73 days and
18.53 days, respectively), organic carbon content in soil (1.154% and 1.171 %, respectively) during both
the years, however, viable microbial count viz., bacterial, actinomycetes and fungal (133.68 × 107 cfu g-1
soil, 62.91 × 102 cfu g-1 soil and 31.88 × 102 cfu g-1 soil, respectively), viable microbial biomass (53.69 μg
g-1 soil) and enzymes viz., Dehrogenase and Phosphatase (4.18 mg TPF h-1 g-1 soil and 26.45 μmole PNP
h-1 g-1 soil, respectively) in soil were recorded after the termination of field experiment. Minimum number
of days taken to visible bud initiation (34.87 days and 28.87 days, respectively) and days taken to reach the
harvesting stage (93.60 days and 76.53 days, respectively) were recorded in ‘Purnima’ when planted on
August 30 under the inorganic fertilization module during both the years. This suggests that organic
fertilization module can act as an alternative for chemical fertilizers in consideration to the low input cost
along with improving soil health and have the potential to contribute to better financial outcomes.