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Effects of Sowing Date and Limited Irrigation on Root Yield and Quality of Sugar Beet (Beta vulgaris L.) |
H. Maralian,
A. Tobeh,
S. Seif Amiri,
R. Didar-Talesh Mikail and A. Aghabarati |
Abstract:
This field study was conducted in order to investigate
the yield and quality of sugar beet Cv zargan in relation to sowing date
and different irrigation regimes during 2005 at Ardabil conditions. The
experimental design was a randomized complete block design with factorial
arrangement in four replicates. In this experiment two factor with four
levels were used: Sowing date (S1 = 5 Apr, S2 =
20 Apr, S3 = 5 May and S4 = 20 May) and irrigation
including: I1 = Irrigation at 13.3 FC (30% FC), I2
= Irrigation at 15.5 FC (50% FC), I3 = Irrigation at 17.7 FC
(70% FC) and I4 = Irrigation at 19.9 FC (90% FC). The SAS software
package was used to analyze all the data and means were separated by the
least significant difference (LSD) test at p<0.01. In this study adjectives
such as root yield (t ha-1), leaf yield (t ha-1),
sugar content (%), Molasses (%), pure sugar content (%), white sugar yield
(t ha-1), Na (mmol/100 g root), K (mmol/100 g root) and α-amino
N (mmol/100 g root) were evaluated. Sowing date and irrigation had a significant
effect on sugar yield and its quality. Potassium concentration was not
significantly affected by irrigation treatments. Interaction effects between
sowing date and irrigation treatments were significant (p<0.01) for
all adjectives. Both early and late sowing decreased beet root and leaf
yield. Results of irrigation treatments showed that the optimum soil water
content for root yield is 70% of field capacity with 66.5 t ha-1.
The minimum root yield (47.36 t ha-1) observed at 90% of field
capacity. Sugar content (%) affected by sowing date and irrigation treatments.
However irrigation at 30, 50 and 70% of field capacity (I1,
I2 and I3) had same effect on sugar content while
sugar content decreased at 90% field capacity (I4). Therefore
the optimum sowing date in Ardabil condition is 20 April that maximum
yield and quality observed on this treatment. When the available soil
water content was at 70% of field capacity, maximum root yield observed.
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How to cite this article:
H. Maralian, A. Tobeh, S. Seif Amiri, R. Didar-Talesh Mikail and A. Aghabarati, 2008. Effects of Sowing Date and Limited Irrigation on Root Yield and Quality of Sugar Beet (Beta vulgaris L.). Asian Journal of Plant Sciences, 7: 298-303. DOI: 10.3923/ajps.2008.298.303 URL: https://scialert.net/abstract/?doi=ajps.2008.298.303
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