STUDIES ON THE EFFECT OF MULCHING MATERIALS ON CHINA ASTER PLANTED DURING DIFFERENT TIMES OF THE YEAR
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Date
2017
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UHF,NAUNI
Abstract
ABSTRACT
The investigation entitled ‘Studies on the effect of mulching materials on China aster planted during different
times of the year’ was carried out at the experimental farm of Department of Floriculture and Landscape Architecture, Dr. Y.
S. Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh during 2015-2016. The experiment was
laid out in a Randomized Block Design (factorial) consisting of 48 treatment combinations of four planting dates viz. , D1-
mid of March, D2- mid of April, D3- mid of May and D4- mid of June; two cultivars namely V1- Kamini and V2- Poornima
along with six mulching materials i.e. M0- without mulch, M1- Black plastic mulch (100 μ),M2-Silver plastic mulch (100 μ),
M3- Transparent plastic mulch (100 μ), M4- Pine needle mulch (1 inch thick layer) and M5-Grass (1 inch thick layer). Among
different planting times, D1 i.e. mid March planting improved plant height (107.70 cm), plant spread (55.54 cm), number of
flowers per plant (72.54), duration of flowering (55.90 days), flower yield per plant (198.70 g), flower yield per plot
(2384.41 g) seed yield per plant (14.30 g) and seed yield per plot (171.54) over no mulching. However, number of days
taken for flower bud formation (108.24 days), 50 per cent flowering (124.46 days), flower diameter (5.47 cm), fresh flower
weight (301.67 g), number of seed per flower (179.38), electrical conductivity (0.97 ds/m), germination per cent (83.92 %),
seedling length (5.97 cm), seedling dry weight (7.09 mg), seedling vigour index I (763.79), seedling vigour index II
(599.27), moisture content (7.83 %) and 1000 seed weight (1.94 g), seed density (0.33 g/ml) were recorded to be best in mid
June planting. Among the cultivars, cv. ‘Poornima’ was observed with better plant height (89.34 cm), plant spread (47.09
cm), flower diameter (4.77 cm), flowering duration (51.39 days) and fresh weight of 100 flower (291.64 g) and number of
seed per flower (187.30) as compared to cv. ‘Kamini’. However, cv. ‘Kamini’ was better over cv. ‘Poornima’ w.r.t. number
of days taken for flower bud formation (98.78 days), 50 per cent flowering (118.25 days), number of flowers (57.16), flower
yield per plant (158.62 g), flower yield per plot (1903.39 g), seed yield per plant (12.55 g), seed yield per plot (150.63 g),
electrical conductivity (1.11 ds/m), germination per cent (80.47 %), seedling length (5.56 cm), seedling dry weight (5.11
mg), seedling vigour index I (649.49), seedling vigour index II (423.45), moisture content (9.28 %), 1000 seed weight (1.70
g) and seed density (0.33 g/ml). Use of Silver plastic improved plant height (84.48 cm), plant spread (48.39 cm), number of
flowers per plant (47.89), flowering duration (51.53 days), flower diameter (4.73 cm), fresh weight 100 flowers (291.67 g),
flower yield per plant (134.73 g), flower yield per plot (1616.79 g) number of seed per flower (170.10), seed yield per plant
(11.98 g), seed yield per plot (143.75 g), germination per cent (80.17 %), electrical conductivity (1.26 ds/m), seedling length
(4.79 cm), seedling dry weight (4.46 mg), seedling vigour index I (616.78), seedling vigour index II (368.48), Moisture
content (9.35 %), 1000 seed weight (1.75 g) and seed density (0.30 g/ml) and also took minimum days for flower bud
formation (115.91 days) and 50 per cent flowering (136.60 days).
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