TY - JOUR AU - Attitalla, Idress H. PY - 2011/12/31 Y2 - 2024/03/29 TI - Effects of Azospirillum lipoferum strain isolated from Al Jabal Al Akhdar region and wheat straw on some physiological properties and nitrogen content of Triticum aestivum cultivars JF - Al-Mukhtar Journal of Sciences JA - MJSc VL - 26 IS - 1 SE - Research Articles DO - 10.54172/mjsc.v26i1.164 UR - https://omu.edu.ly/journals/index.php/mjsc/article/view/164 SP - 9-25 AB - <p><em><span style="font-weight: 400;">Azospirillum </span></em><span style="font-weight: 400;">was abundant in high population levels and recorded 1.1 </span><span style="font-weight: 400;">×</span><span style="font-weight: 400;"> 10</span><span style="font-weight: 400;">3</span><span style="font-weight: 400;"> – 13.2 </span><span style="font-weight: 400;">×</span><span style="font-weight: 400;"> 10</span><span style="font-weight: 400;">4 </span><span style="font-weight: 400;">CFU/g in 23 soil samples collected from the rhizosphere of 24 plants grown in different sites distributed in El-Jabal Elakhdr eco-region. According to cell-morphological, cultural and biochemical characteristics, fifteen </span><em><span style="font-weight: 400;">A. lipoferum </span></em><span style="font-weight: 400;">isolates were identified. The effect of </span><em><span style="font-weight: 400;">A. lipoferum </span></em><span style="font-weight: 400;">(isolate R</span><span style="font-weight: 400;">23</span><span style="font-weight: 400;">) inoculation and / or wheat straw (0.5 and 10</span> <span style="font-weight: 400;">T/h) amendment on the grouth and N</span><span style="font-weight: 400;">2</span><span style="font-weight: 400;"> fixation of two wheat cultivars (Giza 167 and local cultivar) was determined in pot experiments using the difference method (DM). </span><em><span style="font-weight: 400;">Azospirillum </span></em><span style="font-weight: 400;">inoculation resulted in accumulation of fixed nitrogen, and N% from atmosphere being 36.7 and 12.9% for wheat Giza 167 and the local wheat cultivar, respectively. Straw amendment reduced %N from atmosphere to 9.7 and 11.2% at 5 and 10 T/h, respectively for wheat local cultivar and recorded 23.9 and 20.1% for wheat cultivar. Giza 167. Rational nitrogen fertilization (180 kg N/h) recorded the lowest %N from air and recorded 7.1 and 11.2% for wheat local and Giza 167 cultivars, respectively. The highest levels of increased growth parameters were obtained by N-fertilization in both inoculated and uninoculated plants for both cultivars. </span><em><span style="font-weight: 400;">Azospirillum </span></em><span style="font-weight: 400;">inoculation induced shoot Mg and P content, but not Ca in both cultivars. Organic matter addition had no significant effects in both cultivars used in the present study and such outcome needs further assessment.</span></p> ER -