b- Root damage
Fig. (5) show that the relationship between belt inclination angle and root
damage at different belt speeds. The figure illustrated that increasing belt
inclination angle from 25 to 45 the root damage decrease from 1.0 to
0.5 at belt speed 0.5 m/s, 1.5 to 0.8 at belt speed 1.0 m/s and 2.0 to 1.0 at
belt speed 1.5 m/s. Therefore the data cleared that the root damage
increase as average from 0.77 to 1.51 % by increasing belt speed from
0.5 to 1.5 m/s.