Two field experiments were carried out at Experimental Farm, Fac. Agric., Zagazig Univ., Sharkia Governorate, Egypt during the two consecutive seasons of 2018/2019 and 2019/2020. Therefore, aiming to study the influence of different salicylic acid rate (0.0, 50, 100 and 150 ppm), biofertilization types (without inoculation, nitrobein or/and phophorein at 1 kg/feddan of each type) and their interaction treatments on vegetative growth, yield components and volatile oil as well as total chlorophyll content of dill plant. In the two consecutive seasons, dill plants treated with salicylic acid at 100 or 150 ppm rates showed a significant increase in vegetative growth (plant height, number of branches per plant and total herb dry weight) compared to the others rates under study. The highest rate of salicylic acid as foliar spray recorded the highest values in yield components (umbels number per plant as well as fruits yield per plant and per feddan) as well as volatile oil production (volatile oil percentage and yield per plant) compared to the other ones under study, in most cases. Moreover, adding bio-fertilization (nitrobein + phosphorein) produced the highest values of all studies parameters compared to the other types under study. Generally, 150 ppm salicylic acid combined with 1 kg/feddan nitrobein + phophorein recorded an increase in vegetative growth, yield components, volatile oil production and total chlorophyll content compared to either of salicylic acid or/and biological fertilizers rates under study individually in both seasons.