Effect of planting method and planting depth on quantitative and qualitative characteristics of different potato cultivars in Mahidasht of Kermanshah

In order to study the effect of planting methods and planting depth on qualitative and quantitative characteristics of potato cultivars a factorial experiment carried out based on randomized completely block design in three replications under Mahidasht Town in Kermanshah Province, 2014-15 season. Experimental factors in this research were planting methods includs conventional cultivation (Hill planting), planting in leveled soil surface (Flat planting) and planting in furrow. Planting depth were 7, 12 and 17 cm and three studied cultivars were Agria, Arinda and Banba. Results showed that planting methods had significant effect on all of studied parameters. Planting depth had not significant effect except of tuber PH. The interaction effect of planting method and planting depth on tuber mean weight and total tuber yield was significant. Triple effect interaction of examined factors showed that the Agria cultivar produced the highest tuber numbers (14.67) into furrow planting in the depth of 17 cm and the Banba cultivar produced the lowest tuber numbers (6.33) in hill planting in the depth of 7 cm. Mean comparison of parameters showed that the highest percentage of dry matter was observed into furrow planting with amount of 3.29% and the lowest in the hill cultivation method with amount of 4.6%. The highest tuber pH was obtained into furrow planting (5.81) because of better availability to nutrients. totally, the Arinda and Banba determined as the best cultivars to cultivation in this region.