Study of the Effect of Potato Lifter Line on Some Properties at Different Depths and Varieties of Potato Crop

This research aims to study the effect of the number of harvest rows under two digging depths and cultivars on the quality of harvesting potatoes (damage and losses). The experiment was factorial, using a randomised complete block design with split-split plot design and three replications for each treatment. The two types of potatoes were placed in the main plot, the type of digger in the secondary split plot, and the depth of digging in the split-split plot. The results showed no significant differences between the potato diggers in most of the studied traits. However, the two-row potato digger recorded better results than the one-row potato digger, with 83.60% undamaged tubers (UD) for the two-row digger compared to 81.07% for the one-row digger. The potato cultivar Actras achieved the highest percentage of UD and total harvesting tubers with 85.18% and 98.22%, respectively, compared to the potato cultivar Arizona with 79.49% and 95.00%. The interaction of the Actras cultivar with the two-row potato digger and a depth of 25 cm was superior and recorded the lowest percentage of bruised tubers (3.99%) and total crop losses (7.88%).