Document Type : Research Paper

Authors

• A. Akbarinia ¹
• A. Ghalavand ²
• Z. Tahmasebnbi ²
• F. Sefidcon ³
• E. Sharifi ³
• M.B. Rezaii ³

¹ Ph. D student of Agronomy, Agric. Fac. Of Tarbiet modarres Univ

² Agric. Fac. Of Tarbiet modarres Univ

³ Members of Scientific Board of Reseach Institute of Fiorest & Rangelands

Abstract

This experiment was conducted on 2001 and 2002 in reseach farm of Qazvin Agriculture Research Station, in order to study the effect of different rates of nitrogen, Phosphorus (Conventional system), manure (Organic system) and mixture of them (Integrated system) on seed yield and essential oil content of Ajowan (Carum copticum). The experimental design was used randomized complete blocks with three replication. Treatments included: different rates of N and P (as mixture) with 4 levels, different rates of manure with 3 lebvels, mixture of N, P and distillation method. The results showed that increase in N and P fertilizer up to 90 and 60 kg/ha respectively, was followed by seed yield increase but fertilizers had no effect on the essential oil content. Also, seed yield essential oil content increased as a result of increase in manure application. In general integrated treatments in respect of seed yeild and essential oil yield were higher than other treatments.

Keywords

• medicinal plant
• Ajowan
• essential oil
• seed yield
• nitrogen
• Phosphorus
• Manure