investigation the effect of compost, vermicompost, cow and sheep manures on yield, yield components and essence percentage of cumin (cuminum cyminum)

abstract cumin is one the most important medicinal plant in iran. a field experiment was conducted in order to evaluate the effect of compost (30t/ha), vermicompost (10t/ha), cow manure (30t/ha) and sheep manure (20t/ha) and control (no fertilizer) on yield and yield components of cumin. the experiment was performed in the research farm of faculty of agriculture, ferdowsi university of mashhad during the growing season of 2007. a randomized complete block design with 5 treatments and 3 replications was used. results showed that treatments had a significant effect on grain yield and biological yield, number of umbers per plant, number of seed per umber, number of seed per plant and plant height. the treatments had no significant effect on hi (harvest index) and 1000 seed weight. the highest and the lowest seed yield, biological yield and plant height were obtained in vermicompost and control, respectively. the present study showed that organic fertilizers and animal manures can enhanced the yield and its components in cumin.