Abstract:
Several physical properties of
three safflower cultivars (IL-111, LRV51-
51 and Zarghan279) at moisture contents of
10, 15, 20 and 25% were determined and
compared. All the linear dimensions,
geometric mean diameter and sphericity of
safflower seeds increase linearly with
increase in seed moisture content. The
values of geometric properties were higher
for IL-111cultivar than the LRV51-51 and
Zarghan279 cultivars. The values of the
bulk densities decreased, whereas the
thousand seeds mass, true density and
porosity were increased with increase in
seed moisture content. All the gravimetric
properties for the three cultivars of
safflower were significantly different
(p<0.05). The values of the terminal
velocity for all cultivars were significantly
increased as the moisture content increased.
The terminal velocity for the three cultivars
of safflower were significantly different
(p<0.05). On the two different surfaces, the
coefficient of static friction of the IL-111
cultivar was significantly greater than that
of the other cultivars. The static coefficient
of friction was higher on plywood and lower
for galvanized steel. The values of the angle
of repose increased with increase of the
moisture content. The values of the angle of
repose for Zarghan279 cultivar were higher
than the IL-111, LRV51-51 cultivars.
