EFFECTS OF FERTILIZER AND PLANT DENSITY ON YIELD AND QUALITY OF ANISE (PIMPINELLA ANISUM L.)

In order to understand the effect of organic fertilizer on yield ofanise, an experiment was conducted in the form of split-plot in randomizedcomplete block design with three replications in mashhad, khorasan agricultureand natural resource research center. four treatments of fertilization: the control,vermicompost – 5 t/ha, cow manure – 25 t/ha, and mineral fertilizer (npk) – 60kg/ha (the same rate of each nutrient) were applied as the main factor. the secondfactor was plant density, applied at three levels: 17, 25, and 50 plants/m2. theresults showed a significant effect of fertilizer on the number of umbels per plant,number of umbellets per umbel and canopy cover. plant density had a significanteffect on grain yield, biological yield, the number of lateral branches, essential oilpercentage and yield of essential oil. seed and essential oil yield were the highestin the case of the application of vermicompost and plant densities of 50 and 25plants/m2 respectively.