| In this study, a potato harvesting machine performance by studying the effect of the potato harvester operating variables on tuber damage was investigated. All field experiments were conducted at the premises of the National Agricultural Development Company (NADEC) located east of the city of Riyadh, in sandy loam soil by using long oval tubers in shape specifications (Hermes), along with one type of potato harvester (i.e., two-row potato harvester with two riddle chains). Therefore, three operating variables pertaining to the potato harvester were utilized: potato harvester forward speed (chain speed) at 1.5 km/h (with the primary chain speed of 2.8 and the secondary chain speed of 1.8 km/h), 1.7 km/h (primary and secondary chain speed of 3.4 and 2.2... |
