Seeds of Sour orange (SO) and Carrizo citrange (CC) rootstocks were treated by soaking for 24 h in tap water, Ca⁺⁺NO₃ at 0.2%, KNO₃ at 0.2%, Goëmar (bio-stimulant) BM86 at 0.3 and 0.5%, Goëmar MZ63 at 0.5%, GA₃ at 50 ppmor control (directly sowing) in a trial to improve the emergence and growth of seedlings aiming to produce good transplants. The seeds were sown under plastic house during February of 2006 and 2007 seasons. SO seeds had higher emergence percentage, emerged faster and gave lower number of seedlings/seed than those of C.C. Moreover, seedling of S.O was higher at 70 days after sowing, but after 6 months those of CC were the highest in stem length and diameter, and the lowest in fresh and dry weight. On the other hand, the leaves of CC had higher N content in both seasons and lower P content in the first season only, compared to SO. Treatments with Goëmar BM860.3% increased the emergence % (90.8 & 92.8%) as compared with all other ones, followed by GA₃ (85.0 & 88.5%), tap water (86.5 & 88.0%) and KNO₃ (84.7 & 85.8%). No significant differences were found in the emergence % among Ca⁺⁺NO₃, Goëmar BM86 (0.5%), Goëmar MZ63 (0.5%) and the control treatments. The average number of days required to complete the seedling emergence was reduced by soaking the seeds in tap water before sowing (emergence rate were 34.9 & 36.3 days, in both seasons, respectively). After 6 months from sowing, Goëmar MZ63 (0.5%) treatment produced seedlings with stem length (31.2 & 36.5 cm) higher than those of control one (28.4 & 33.7 cm). Seedling fresh and dray weights increased with tap water treatment compared to the control and GA₃ ones. On the other hand, leaf N content increased with Ca⁺⁺NO₃ and Goëmar MZ63 (0.5%), while P leaf content was higher with all treatments, except KNO₃ and GA₃ compared to the control.