Effects of Azocompost and urea on the herbage yield and contents and compositions of essential oils from two genotypes of dragonhead (Dracocephalum moldavica L.) in two regions of Iran

► This is the first study the response of dragonhead genotypes to Azocompost. ► The costs and chemical N fertilizer applications were decreased using Azocompost. ► Integrated Azocompost and urea improved the content and composition of essential oils. ► Yields of dry herbage and essential oils were different between the genotypes.