كليدواژه :
تراكم بوته , Component yield cultivar , اجزاي عملكرد , سيب زميني , Plant density , عملكرد غده , potato , Tuber yield , كشاورزي
چكيده لاتين :
In order to evaluate the effects of cultivar and planting density on yield and yield components of potato, an experiment was conducted during 1996 in Bostan Abad (46, 50 N, 3T 51ʹ E) located at 55km east of Tabriz, Iran. A factorial experiment based on randomized complete block design with three replications was used. Combination of five cultivars; Alpha, Draga, Cozima, Morene and Auola, with three planting densities; 50000, 62500 and 75000 plants per ha-ʹ (27,22 and 18cm between plants on the row and 75 cm row spacing, respectively) were used as experimental factors.The number of tubers per plant and per square meter, tuber diameter, mean tuber weight, tuber weight per plant and tuber yield were significantly affected by cultivars. Cozima had higher number of tuber per plant and per square meter, tuber diameter, mean tuber weight, tuber weight per plant and tuber yield (39.5 t ha-ʹ) among the cultivars evaluated. All the traits under study were affected by plant density. Number of tuber per plant, tuber diameter, mcon tuber weight, tuber weight per plant and dry matter percentage of tuber were decreased as plant density increased, but number of tuber per square meter increased signiflcantly.The tuber yield increased by increasing the plant density from 50000 to 62500 and deereasod thereafter when the density was raised from 62500 to 75000. Tuber yield showed significant correlations with number of tuber per plant and per square meter and tuber weight per plant. On the basis of the result of this study, planting Cozima and Auola cultivars with 62500 plants per ha^-t in Bostan Abad, may be recommended.
