STUDIES ON PROPAGATION OF MARIGOLD CV. ‘SIRACOLE’
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Date
2024-01-24
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UHF Nauni
Abstract
The present investigation entitled ‘Studies on propagation of marigold cv. Siracole’,
was carried out at Floriculture Farm of Department of Floriculture and Landscape
Architecture, Dr Yashwant Singh Parmar University of Horticulture and Forestry, Nauni,
Solan (HP) during 2022-23. The experiment was laid out in Completely Randomized Block
Design (Factorial) to study the effect of various combinations of rooting media i.e., Cocopeat,
Sand, Perlite and Vermicompost and different rooting hormone i.e., 500 ppm NAA, 250 ppm
NAA on quality cutting production of marigold under different planting dates from February
to July. Different root parameters like percent rooting, number of roots, length of the longest
root, root fresh and dry weight, root volume and percent survival were observed to check the
rooting performance of cuttings under different NAA treatments, various rooting media and
different planting dates. From the studies, early rooting (18.33 days), maximum number of
roots per cutting (43.37), fresh weight of roots (251.23 mg), dry weight of roots (29.69 mg),
root volume (0.359 cm3) and highest percent survival (97.39%) of rooted cuttings were
recorded when cuttings were treated with 500 ppm NAA as a rooting hormone and planted in
the medium consisting of Cocopeat + Sand + Vermicompost (1:1:1v/v) in the month of June.
While maximum percent rooting (96.82%) was found when 500 ppm treated cuttings were
planted in the media comprising Cocopeat + Sand + Perlite (1:1:1v/v) in the month of June.
From the studies, it may be concluded that 500ppm NAA is the best rooting hormone
treatment for quality cutting production of marigold cv. ‘Siracole’ when planted in rooing
medium consisting of Cocopeat + Sand + Vermicompost (1:1:1v/v). Further, June planting
was found most suitable for quality cutting production.