New Zealand Journal of Crop and Horticultural Science
abstracts
Physical properties of monogerm sugarbeet (Beta vulgaris var. altissima)
seeds
Ali Kasap
Ebubekir Altuntas
Agricultural Faculty
Gaziosmanpasa University
Tasliciftlik, 60240 Tokat
Turkey
email: akasap@gop.edu.tr
Abstract Physical properties of seeds of ‘Gina’ and ‘Leila’ monogerm
sugarbeet (Beta vulgaris var. altissima) varieties as a function
of moisture content were evaluated. Physical properties of sugarbeet varieties
such as unit seed mass, thousand-seed (1000-seed) mass, bulk density, true
density, seed volume, angle of repose, and coefficient of friction on various
surfaces were determined. The average unit seed mass and 1000-seed mass ranged
from 0.0117 to 0.0133 g and from 10.77 to 12.00 g, as the moisture content
increased from 8.55% to 17.14% (dry basis) for ‘Gina’. The average unit seed mass
and 1000-seed mass ranged from 0.0112 to 0.0121 g and from 12.07 to 13.70 g,
as the moisture content increased from 6.88% to 19.28% (dry basis) for ‘Leila’.
In the moisture content range, studies on re-wetted sugarbeet seeds showed that
the seed volume increased from 0.0122 to 0.0147 mm3, and from 0.0137 to 0.016
mm3, for ‘Gina’ and ‘Leila’ sugarbeet seeds, respectively.
The bulk densities decreased from 125.92 to 120.02 kg/m3 and from 148.09 to 114.06
kg/m3 and true densities decreased from 916.70 to 827.39 kg/m3 and from 852.81
to 832.20 kg/m3, for ‘Gina’ and ‘Leila’, respectively,
whereas the angle of repose increased from 19.31° to 21.27° and from
21.05° to 21.32°, for ‘Gina’ and ‘Leila’ respectively.
The static and dynamic coefficients of friction on various surfaces, namely,
plywood, mild steel, and galvanised metal also increased linearly with increasing
moisture content. The plywood surface offered the maximum friction followed by
mild metal and galvanised metal.
Keywords sugarbeet seed; Beta vulgaris var. altissima;
physical properties
New Zealand Journal of Crop and Horticultural Science, 2006, Vol. 34:
311–318
0014–0671/06/3404–0311 © The Royal
Society of New Zealand 2006
H06006; Online publication date 26 October 2006. Received 24 January
2006; accepted 21 June 2006
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