Background: Bio-fertilizers may be used to maintain soil fertility and soil improvement.&nbsp; 
 
Methods: In this study involving 12 treatments and 3 replications was conducted in Tehran, Iran. The experiment was conducted in 2018&ndash;2019 as a randomized complete block design. The treatments were 1- vermicompost (10 t/ha), 2- nitroxin, 3- bio-superphosphate, 4- biosulfur, 5- vermicompost + nitroxin, 6- vermicompost + bio-superphosphate, 7- vermicompost + biosulfur, 8- nitroxin + bio-superphosphate, 9- nitroxin + biosulfur, 10- bio-superphosphate + biosulfur, 11- chemical fertilizer and 12- control (without fertilizer).&nbsp; 
 
Result: The results showed that the treatments had a significant impact on the characteristics examined such as the highest plant height (75.3 cm) in the treatment combining vermicompost and biological superphosphate and the highest number of shoots/plant. The highest concentration of N in seeds (2.92%) was obtained when plants were treated with nitroxin and biosulfur and the highest concentration of P in seeds (0.83%) when treated with biological superphosphate. In addition, the highest K content in seeds (4.06%) and grain yield (1297.5 kg.ha-1) were found in the treatment of nitroxin and bio-superphosphate, as well as the content of essential oil (0.32%). and the yield of essential oils (2.89 kg.ha-1) was obtained when treated with nitroxin. Consequently, Bio-organic fertilizers can be considered as an alternative to chemical fertilizers in organic coriander cultivation.&nbsp;

The Effect of Utilizing Different Types of Organic and Bio-Fertilizers on Growth, Elements Concentration, Seed Yield and Essential Oil of Coriandrum sativum L.