Effect of sowing dates on growth and yield of radish cultivars in
humid sub-tropical condition at Rampur, Chitwan.
M. Sc. Thesis, Department of
Horticulture, IAAS, Rampur, Chitwan, Nepal. pp. 61
Sah, R. P. 2002. [Student I. D. No.
R-1999-HRT-27-M, Advisor: S. M. Shakya, Members: D. M. Gautam and M. D. Sharma].
An experiment
was conducted at the Hoticulture Farm of the Institute of Agriculture and Animal
Science (IAAS), Rampur, Chitwan from 9th September 2000 to 8th
January 2001 to assess the effect of sowing dates on yield and quality of
various cultivars of radish. The experiment was laid out in a factorial
randomized complete block design (RCBD). Treatment combination included seven
cultivars of radish, viz. 'Mino Early', 'Chalis Dine', 'Tokinasi', 'White
Icicle', 'Sparklar White Tip', 'Cherry Belle', and 'Chinese-1' and three dates
of sowing, viz. September 9, October 9, and November 8. The number of
replication was four. Each individual plot which was 2.52 m2 in area
(1.8x1.4m2) consisted of 84 plants spaced at 20 cm row to row and 15
cm plant to plant within each row. Resuts showed that the interaction effect of
sowing dates and cultivars was significant for characters observed. Marked
variations were observed among cultivars with respect to various plant
attributes in each sowing date. Variations of leaf number from 7.3 to 21.68,
leaf length from 12.3 to 33.3 cm, leaf width from 5.6 to 10.4 cm, fresh leaf
weight from 7.2 to 147 g and leaf area from 131.3 to 1502.6 cm2 were
observed. Accordingly, 'Chinese-1' produced higher leaf number, leaf length, and
leaf area, while 'Cherry Belle' had the least one. Variation of root length from
3.7 to 22.8 cm, root diameter from 2.7 to 4.2 cm, and fresh root weight of 24 to
200 g were also observed. The variation of marketable root yield and leaf yield
per hectare were 6.2 to 36.1 t and 2.0 to 42.6 t, respectively. Cultivar
'Chinese-1' produced 3.5 and 9.9 percent higher marketable root than 'Mino
Early' in early and late sowing, respectively. 'Cherry Belle' produced the
lowest marketable root yield but was more suitable for salad purpose. It became
ready for harvest within short period (22 to 30 days) that also fetched higher
price. These two cultivars could be suggested for expanding the production
period.
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