Response of wheat cultivar (Beni suef 5) to nitrogen fixing and phosphorus solubilizing inocula. | ||||
| Minia Journal of Agricultural Research and Development | ||||
| Volume 45, Issue 3, September 2025, Page 367-376 PDF (333.73 K) | ||||
| DOI: 10.21608/mjard.2025.430213 | ||||
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| Abstract | ||||
| Inoculation of the wheat (Beni suef 5) with Azotobacter chroococcum (AZ1 or AZ2) as nitrogen fixers, or Bacillus megaterium (BM1 and BM2) as phosphate dissolvers significantly increased the grain yield, plant height, spikelets/spike, kernels/spike and grain weight of 10 spike as compared to un-inoculated plants. The inoculation with A. chroococcum gave a significant increase in plants nitrogen content (N%) as compared to the un-inoculated plants. No significant increase in nitrogen % was observed in plants treated with B. megaterium. Plant phosphorus content in plants treated with B. megaterium showed significant increase as compared to control plants (un-inoculated) or those inoculated with A. chroococcum. No significant difference was recorded in potassium content (K%) of plants treated with A. chroococcum or B. megaterium as compared to un-inoculated plants. A. chroococcum and B. megaterium inocula were subjected to determination of their abilities in producing indole acetic acid (IAA), gibberellins (GA3), and Siderophores. A. chroococcum isolates exhibited high efficiency in producing indole acetic acid (IAA), gibberellins (GA3) and Siderophores as compared to B. megaterium (BM1 and BM2). Nitrogenase activity in wheat root soil treated with A. chroococcum AZ1 or AZ2 was significantly higher than in the control plants. The highest enzyme activity in the root zone of wheat inoculated with A. chroococcum or B. megaterium was recorded at 45 days after planting. | ||||
| Keywords | ||||
| : Azotobacter; Bacillus megaterium; Wheat | ||||
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