A laboratory experiment was conducted in the labs of Seeds Testing and Certification Department, Ministry of Agriculture in 2017 to improve germination and seedling growth in primed sorghum seeds by different concentrations and soaking durations of acids of gibberellic (GA3)(distilled water, 75, 150 and 300 mg l-1), salicylic (SA)(distilled water, 40, 70 and 100 mg l-1) and soaking duration (SD)(12 and 24 h). Factorial experiment in completely randomized design was applied with four r replications. The results showed the superiority of the two soaking treatments with GA3 (300 mg l-1) and SA (70 mg l-1) at germination ratio, radicle and plumule lengths, seedling dry weight and seedling vigour index (81.3%, 2.7 cm, 8.9 cm, 0.081 mg and 984) and (79.6%, 2.8 cm, 8.2 cm, 8.2, 0.083 mg and 881.5), respectively. Soaking duration (12 h) surpassed at germination ratio and seedling vigour index (79.3% and 820.8), respectively. The combination 300× 70× 12 surpassed at germination ratio, radicle length and seedling vigour index (86.5%, 3.8 cm and 1308.6), respectively. A significant positive correlation relationship was showed between most traits. It can be concluded that using sorghum seed priming technology by using the combination 300× 70× 12 before planting, it has increased the seed vitality and vigour through improving germination ratio and seedling growth.
