بررسي اثر كودهاي مختلف (K.P.N و كودهاي آلي) بر مقدار و نسبت اسانس زيره ي رقم اصفهان

The study of the effect of different fertilizers (N.P.K1 and organic) on amount and the rate of essential oil of Cuminum cyminum (variety of Isfahan)

Cuminum cyminum is one of the most important aromatic and medicinal plants. Despite of its low yield it has highly economic value. In this study the effect of chemical and organic fertilizer on yield , weight of 1000 grain and amount of essential oil of Cuminum cyminum ( variety of Isfahan )had boon done. This study was carried out in winter and spring (2007) in research farm of Shar-e -Rey branch, Azad University. Treatments consisted of three levels of chemical fertilizer of N.P.K (including al, a2 and a3) and two levels of organic fertilizer (including bl and b2). Controls did not receive any kind of fertilizers, al, a2 and a3 chemical fertilizer treatments composed of N-20 P=16 K=20, N-40 P=32 K=40 and N=80 P=64 K=80 kg/ha, respectively, bl and b2 organic fertilizer treatments composed of 10 and 20 ton/ha, respectively. Experiment was carried out in a factorial plot with randomized complete blocks with three replicates. Data was analyzed with Dunkan method. Results showed that a2 and al had the best effect on yield and weight of 1000 grain, respectively. Plants treated with b2 had the most essential oil. Controls had the least yield, weight of 1000 grain and essential oil. It can be concluded that, fertilizers increased the yield of Cuminum cyminum.