Increasing nitrogen rates caused an increase dry herbage yield of wormwood. Dry herbage yields ranged from 8997 and 10,920 kg ha−1 according to year and nitrogen rates. Mert (1999) stated that dry herbage yields were between 15,472 and 26,099 kg ha−1 in different wormwood ecotypes in Turkey. Because of variations in the dry herbage yields depending on fresh herbage yields, both yield values are related.