Effect of different black-out materials on off-season pot mum production of chrysanthemum (Dendranthema grandiflora)

S R DHIMAN; Y C GUPTA; PRIYANKA THAKUR; BHARATI KASHYAP; MEENAKSHI SHARMA; KHUSHBOO SHARMA

doi:10.56093/ijas.v88i4.79125

Authors

S R DHIMAN Principal Floriculturist, Dr Y S Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh 173 230
Y C GUPTA Professor and Head, Dr Y S Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh 173 230
PRIYANKA THAKUR Principal Floriculturist, RHRTS, Dhaulakuan. Dr Y S Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh 173 230
BHARATI KASHYAP Assistant Professor, Dr Y S Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh 173 230
MEENAKSHI SHARMA Senior Research Fellow, Department of Floriculture and Landscape Architecture, Dr Y S Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh 173 230
KHUSHBOO SHARMA Research Fellow, Department of Biotechnology, Dr YSP UHF, Nauni

https://doi.org/10.56093/ijas.v88i4.79125

Keywords:

Black-out material, Chrysanthemum, Flowering, Growth, Off-season

Abstract

The present investigation on effect of different black-out material(s) on off-season pot mum production of chrysanthemum (Dendranthema grandiflora Tzevelev) was carried out at the experimental farm of the Department of Floriculture and Landscape Architecture, Dr Y S Parmar University of Horticulture and Forestry, Nauni, Solan (H.P.) during 2011. The investigations were conducted on 10 selections/cultivar of chrysanthemum. Off-season flowering was induced by providing artificial short days (16 hr dark period with effect from 5.00 pm to 9.00 am) starting from 9 June 2011, till 60-70% flower buds showed colour. Artificial short days were provided by three different materials, viz. Tarpaulin, High density polyethylene – White outside and black inside, Black satin cloth. Findings revealed that among different covering materials, HDPE resulted in minimum days for visible flower bud formation in ‘UHFSChr -43’ (60.67) and maximum diameter of flower in ‘UHFSChr -68’ (4.22 cm). However, black satin cloth recorded maximum plant height in cultivar ‘Ajay’ (70.00 cm), number of flowers per pot and number of flowers per plant in ‘UHFSChr -64’ (367.30 and 123.00 respectively). In this experiment, all selections/cultivar tried for off –season pot mum production under different black out materials flowered successfully. Among different black-out materials used, HDPE was best for Solan –Nauni conditions of Himachal Pradesh.

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References

Anonymous. 2015-16. Status of floriculture in Himachal Pradesh. Directorate of Horticulture, Shimla, Himachal Pradesh.

Gloeckner F C. 1985-86. Chrysanthemum manual, New York.

Gomez L A and Gomez A A. 1984. Statistical Procedure for Agricultural Research, 3rd ed, p 680. John Wiley and Sons, Singapore.

Larson R A. 1931. The effect of three darkening regimes on development of Chrysanthemum morifolium Ramat grown during spring. Swedish Journal of Agriculture Research 11(1): 35–9.

Palmsey S. 2012. ‘Studies on the effect of covering material(s) on off-season cut flower production of chrysanthemum (Dendranthema grandiflora Tzvelev)’. M Sc thesis, Dr Yashwant Singh Parmar University of Horticulture and Forestry, Nauni-Solan, Himachal Pradesh.

Pathak N. 2002. ‘Screening of chrysanthemum cultivars for year round flower production’. Ph D thesis, Dr Yashwant Singh Parmar University of Horticulture and Forestry, Nauni-Solan, Himachal Pradesh.

Post K. 1931. Reducing the day length of chrysanthemum for the production of early blooms by the use of black satin cloth. Proceedings of the American Society for Horticultural Science 28: 382–8.

Singh K. 2001. Effect of photoperiod on growth and flowering of chrysanthemum. Journal of Ornamental Horticulture New Series 4(1): 63–4.

Singh R P, Beniwala B S and Joon M S. 2005. Effect of different shade intensities on growth, flowering and yield of chrysanthemum cv. Vasantika. Crop Research, Hisar 29(2): 275–6.

Sita Ram. 1991. ‘Studies on year round flower production in chrysanthemum’. M Sc thesis, Dr Yashwant Singh Parmar University of Horticulture and Forestry, Nauni-Solan, Himachal Pradesh.

Sita Ram and Sehgal O P. 1993. Studies on year round flower production in pot chrysanthemum. I. Effect of controlled photoperiod and growth retardant on vegetative growth. Journal of Ornamental Horticulture 1(2): 21–7.

Sultanpuri A. 2014. ‘Effect of number of plants per pot, pot spacing and photoperiod on production of potted chrysanthemum (Dendranthema grandiflora Tzvelev)’. M Sc thesis, Dr Yashwant Singh Parmar University of Horticulture and Forestry, Nauni- Solan, Himachal Pradesh.

Talent C J W, Watkinson A, Langton F A and Cockshull K E. 1979. The effects of periods of short days on early-flowering chrysanthemums grown under glass. Experimental Horticulture 31: 67–4.

Usha. 2010. ‘Screening of newly evolved selection of chrysanthemum for off season flower production’. M Sc thesis, Dr Yashwant Singh Parmar University of Horticulture and Forestry, Nauni-Solan, Himachal Pradesh.

Velmurugan S and Vadivel E. 2003. Effect of photoperiod and paclobutrazol on year round flower production in chrysanthemum. South Indian Horticulture 51(1/6): 51–9.