Impact of foliar application with molybdenum and biofertilization on the growth and yield of soybean plants in sandy soil

الملخص EN

The effects of philosopher enrichment with Molybdenum and /or bio fertilization on soil micro flora and soybean growth were investigated by ghe effects of philosopher enrichment with Molybdenum and /or bio fertilization on soil micro flora and soybean growth were investigated by growing plants in pots using a sandy soil.

The bio fertilizers used are azotobacters and azospirilla.

Rhizospheric soil samples were collected at flowering and harvesting stages after 80 and 130 days from seed emergence, respectively.

These samples were analyzed for total microbial counts and counts of azotobacters, azospirilla, bacilli and fluorescent pseudomonads.

In addition, root nodulation, soybean yield, yield components and contents of Fe++, Zn++ and Mn++ in seeds were determined. Results obtained indicated that plants inoculated with Azotobacter chroococcum demonstrated increased total microbial counts and population of fluorescent pseudomonads in rhizosphere.

When plants were treated with both Azotobacter and Molybdenum, the highest increase was shown on those treated with azotobacters. Combined treatment of Mo1 and B2 resulted in dominance of azospirilla and bacilli in the rhizosphere.

Root nodulation and the size and weight of seeds were increased by Azotobacter treatment with or without addition of Molybdenum, while nodule dry weight was clearly increased due to amendment of Molybdenum.

The total contents of micronutrients, including Fe++, Zn++ and Mn++ in seeds were increased considerably when plants were treated with both Azotobacter and Molybdenum suggesting synergistic effects of Molybdenum and a symbiotic nitrogen fixing bacteria.

This study demonstrated that foliar application with Molybdenum and bio fertilizers enhance soybean growth and yield in sandy soil.

rowing plants in pots using a sandy soil.

The bio fertilizers used are azotobacters and azospirilla.

Rhizospheric soil samples were collected at flowering and harvesting stages after 80 and 130 days from seed emergence, respectively.

These samples were analyzed for total microbial counts and counts of azotobacters, azospirilla, bacilli and fluorescent pseudomonads.

In addition, root nodulation, soybean yield, yield components and contents of Fe++, Zn++ and Mn++ in seeds were determined. Results obtained indicated that plants inoculated with Azotobacter chroococcum demonstrated increased total microbial counts and population of fluorescent pseudomonads in rhizosphere. When plants were treated with both Azotobacter and Molybdenum, the highest increase was shown on those treated with azotobacters. Combined treatment of Mo1 and B2 resulted in dominance of azospirilla and bacilli in the rhizosphere.

Root nodulation and the size and weight of seeds were increased by Azotobacter treatment with or without addition of Molybdenum, while nodule dry weight was clearly increased due to amendment of Molybdenum.

The total contents of micronutrients, including Fe++, Zn++ and Mn++ in seeds were increased considerably when plants were treated with both Azotobacter and Molybdenum suggesting synergistic effects of Molybdenum and a symbiotic nitrogen fixing bacteria.

This study demonstrated that foliar application with Molybdenum and bio fertilizers enhance soybean growth and yield in sandy soil.