EFFECT OF PLANTIING DATE ON YIIELD,, YIIELD COMPONENT AND ESSENTIIAL OIIL QUANTIITY OF THREE CUMIIN (CUMIINUM CYMIINUM L..) VARIIYETIIES IIN SAVEH REGIION

The experiment to the effect of Planting Date and Figures on yield, yield components and quantity and quality of essential oil of cumin cultivars based in Saveh region, field research was conducted in Islamic Azad University, University Park,Iran in 2011-2012. The experiment was conducted in split plot based on randomized blocks in three practices. Planting dates as main plot treatments consisted of three levels (11Nov, 23 Dec and 19 Feb) and three digits (Qaen, Khaf and TR171). Elements of function included bush height, number of umbel per plant, stem diameter, number of seed umbel, weight of thousand seeds, number of umbelets in bush and seed function in addition to qualities pertinent to essence include percentage of seed essential oil, percentage of cuminaldehyde in seed and ?- Terpinene percent of seed was measured. We compared the results of the interaction effects of planting date; the second highest yield was obtained and figures Qaen and TR171. The results showed that the highest percentage essential oil obtained from the second planting date. The essential elements of the highest in the second planting date and the lowest was in the third planting date.