Effects of organic and bio-fertilizers on biomass yield and quantity and quality of essential oil of green basil (Ocimum basilicum L.) in Firouzkuh region

In order to study effects of organic and bio-fertilizers on dry matter yield and quantity and quality of essential oil of green basil, an experiment was conducted as factorial experiment in the base of randomized complete block design. First factor contained three levels 0, 5 and 10 ton/ha vermicompost and second factor contained two cases inoculated seeds and non-inoculated seeds with Nitroxin biofertilizer. Results showed that the highest shoot dry yield were obtained with application of 5 t/ha vermicompost while the highest essential oil percentage and essential oil yield were in applying 10 ton/ha vermicompost. Nitroxin biofertilizer showed significant effects on shoot dry yield, geranial percentage and Caryophyllene oxide percentage in essential oil, as the highest geranial percentage and caryophyllene oxide percentage in treatment of application of Nitroxin (inoculated seeds) were obtained. Also, the intractions effect of factors on shoot dry yield, geranial, caryophyllene oxide and trans alpha bergamotene in essential oil were significant. Generally, the highest shoot and essential oil yields were obtained with application of vermicompost and the highest essential oil compositions with Nitroxin application.