Abstract
The study was carried out in the College of Agriculture - University of Kerbala at the beginning of September of the year 2022, according to a factorial experiment with a completely randomized block design, to study the effect of bacterial biofertilizer Azotobacter, and a solution of gibberellic acid in three concentrations (0, 150 and 300 mg. L-1), and a solution of kinetin in three concentrations (0, 25 and 50 mg. L-1) in germination of guava seeds (Psidium guajava L.), the results showed that the single effect of the biological fertilizing agent was superior in the all studied characteristic, except for the characteristic of germination energy after ten days compared to the control treatment. As for gibberellic acid, the concentration (300 mg. L-1) gave it the highest significant increase in all the studied traits compared to the control treatment. Also, the treatment of seeds with kinetin excelled, as the concentration (50 mg. L-1) recorded the highest significant difference in all the studied traits, compared to the control treatment, which recorded the lowest rate.
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