بررسي اثر12 تيمار كودي (شيميايي و آلي) بر عملكرد و اسانس گياه زيره ي سبز توده ي خراساني

The study of the effect of 12 treatments of chemical and organic manure on yield and essential oil yield in cumin

Cumin (Cuminum cyminum) is one of the important medicinal and aromatic plants with low yield but high economical value. In this research, the effect of chemic and organic manure on yield, one thousand seed weight and quantity of essential oil in Khorasan cultivar of cumin were investigated. A field experiment conducted during winter 1384 and spring 1385 in Shahr-e-Rey unit of Islamic Azad University. The System of treatment included three levels of chemical fertilizers, N. P. K (b1,b2,b3) and two levels organic fertilizers (a1,a2) or a mixture of different ratios of chemical fertilizer and of organic manures with control group. The experimental design was a factorial in randomized complete blocks design with 3 replications. Duncan comparative test was used for the means comparation. The results showed that control plants had the most yield and one thousand seed weight, it also indicated that the use of manure couldnʹt increase the cumin product. The least of thousand seed weight related to plants treated with a2b2 and a2 b3 however these plants had the most essential oil.percentage