الفهرس Only 14 pages are availabe for public view
 |  | from | 9 |  |  |
| | | from | 9 | | |
Abstract
Two pot experiments were carried out in a nursery of agriculture at pomology department during the two successive seasons of 2012/2013 and 2013/2014 to investigate salinity tolerance of citrus root-stock sour orange under application of bio-fertilization and growth regulator.
Factorial experiment with randomizal design was used with 3 replicates for each treatment. The experiment included 9 treatments as follows:
Irrigation with tap water, Irrigation with tap water and spraying with salicylic acid, Irrigation with tap water and inoculation with mixed inoculum ” Azotobacter and Azospirrillum”, Sea water irrigation at 5 ds/m, Sea water irrigation at 5 ds/m and spraying with 1000 ppm salicylic acid, Sea water irrigation at 5 ds/m and inoculation with mixed inoculum ” Azotobacter and Azospirrillum”, Sea water irrigation at 10 ds/m, Sea water irrigation at 10 ds/m and spraying with 1000 ppm salicylic acid and Sea water irrigation at 10 ds/m and inoculation with mixed inoculum ” Azotobacter and Azospirrillum”.
It has been measured and recorded effect of salinity levels, effect of anti-stress and effect of interaction for each of vegetative growth characteristics; pigment contents, total carbohydrate contents; proline and poly phenol contents; sodium, Calcium and Magnesium contents; nitrogen, Potassium and Phosphor contents and growth characteristics of root system
Conclusion:
For facing the problem of irrigation water salinity and its adverse impact on the growth of seedlings sensitive to salinity (Citrus aurantium), it can alleviated, by using salicylic acid (1000 ppm) as a way chemical and fast or applying bio-fertilization by adding a mixture of Azotobacter and Azospirillum to plant rhizosphere.
The results indicated that the best treatment using saline water at 5ds/m combined with salicylic acid or combined with Azotobacter and Azospirillum.
.