EFFECT OF THE TRACTOR SPEEDS and TYPE CONVEYOR ON THE QUALITATIVE LOSS and DAMAGE POTATO TUBERS

A field experiment was conducted in one of the fields of the Technical Institute in Shatrha for the season 2022 to study the effect of different tractor speeds, type conveyor chain on the qualitative loss and damage potato tubers. severely scratched tubers and slightly scratched tubers, and qualitative loss were studied in this research. The first factor was forward speeds (2.5, 3.20 ,4.0 km.hr-1), and two levels of conveyor chain speeds (38, 49) m. min-1 and third factor two level of type of chain conveyor of rubber bars and clothes -coated. The complete random design with three replications was used in the research. The results showed that the tractor speed 2.5 km/h in gets the severely scratched tubers, which amounted to 2.53 %, and the slightly scratched amounted to 11.15 %, and the lowest qualitative loss was 10.85%.