A field experiment was conducted at Horticulture Farm, S.K.N. College of Agriculture, Jobner (Jaipur) during Rabi season 2016-17 and 2017-2018. The experiment consisting four bio-fertilizers (control, Azotobacter, PGPR (Pseudomonas) and Azotobacter + PGPR (Pseudomonas) and five bio-regulators (control, Thiourea @ 500 ppm, Thiourea @ 1000 ppm, salicylic acid @ 100 ppm and mepiquat chloride @ 100 ppm). The total 20 treatment combinations were tested in split-plot design with three replications. Application of bio-fertilizers: Azotobacter + also significantly increased the neck thickness, polar diameter, fresh weight of bulb, dry weight of bulb, number of cloves per bulb, bulb yield (kg/plot), bulb yield (q/ha) and net returns as compared to control. Foliar application of thiourea @ 1000 ppm to the garlic crop significantly increased the being statistically at par with application of thiourea @ 500 ppm and salicylic acid @ 100 ppm. Further, it can be concluded that combined application of Azotobacter + PGPR (Pseudomonas) along with thiourea @ 1000 ppm proved to be most superior treatment combination as it fetched comparable bulb yield (223.58 q/ha) followed by Azotobacter + PGPR (Pseudomonas) along with thiourea @ 500 ppm and Azotobacter + PGPR (Pseudomonas) along with salicylic acid @ 100 ppm.

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