Effect of different plant density on growth and yield of three cultivars of sesame (Sesamum indicum L.).

Sesame is one of the oldest and most important oil seed crop. Field experiment was carried out to investigate the effect of plant density on growth and yield of three cultivar of ses ame (Sesamum indicum L.). This research conducted at field of Agricultural Training School in Sari, 2013. Three cultivars of sesame (Naz, Yekta and Oltan) were assigned to the main plots and row spacing (40, 50 and 60 cm) were assigned to the subplots with 4replications. The results showed that cultivar treatments significantly effect on traits such as, plant height, the number of capsule per plant, yield per plant, harvest index, seed oil percentage, seed yield, seed protein percentage and protein yield. P lant density had significantly effect on plant height, seed yield per plant and the number of seed per plant. Also, the results indicated that Yekta cultivar as parameters such as, plant height, the number of capsule per plant, the number of seed per capsu le, seed yield, oil yield and protein yield was the best cultivar. The highest harvest index and yield per plant observed by Naz cultivar.