Paper · 2011 · Journal of Agricultural Chemistry and Biotechnology

ACTIVITY OF Azotobacter AND Azospirillum IN THE RHIZOSPHERE OF ONION PLANT

A.H.H. Mahmoud; M. B. O. El-Kotkat; M. N. A. Omar; et al.

3
claims
6
verbatim quotes
0
citations
3
research areas
✓
Open access · cc-by

Abstract

This study was carried out to evaluate the influence of inoculation with nitrogen fixing bacteria (Azotobacter and Azospirillum) that were isolated from onion rhizosphere. The isolates were applied in field experiment to investigate the effect of inoculation with Azotobacter and Azospirillum, on Nitrogenase activity . Isolation and enumeration of Azotobacter and Azospirillum from the soil of onion plants were studied and determination of the enzymatic activities of nitrogen fixing bacteria (nitrogenase) that were isolated from the soil of onion plant during the growing periods at 0, 30, 60, 90, 120 and 150 days after sowing and selected active isolate of Azotobacter and Azospirillum. The obtained results revealed increases in Azotobacter and Azospirillum numbers as well as nitrogenase activity in rhizosphere onion regions. Also these activities reflect on onion plant productivity. This study recommended the application of Azotobacter and Azospirillum as inoculants in onion plant productivity.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 3

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Inoculation with Azotobacter and Azospirillum increased their numbers and nitrogenase activity in the onion rhizosphere.

Taxon
onionAllium cepae0
Treatment
inoculation with nitrogen fixing bacteriae0
Interactor
AzotobacterAzotobactere1symbiont
Second interactor
AzospirillumAzospirillume1symbiont
Outcome
numbers as well as nitrogenase activitye1
Direction
increasese1
Setting
field experimente2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗
Azotobacter
Azotobacter · Interactor · picture of the genus (one of its species)DAN H. JONES · Public domain · Wikimedia Commons ↗
Azospirillum
Azospirillum · Second interactorFadelblaid · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“This study was carried out to evaluate the influence of inoculation with nitrogen fixing bacteria (Azotobacter and Azospirillum) that were isolated from onion rhizosphere”

✓ located verbatim in the source · abstract, characters 0–170 · show in text ↑
e1

“The obtained results revealed increases in Azotobacter and Azospirillum numbers as well as nitrogenase activity in rhizosphere onion regions”

✓ located verbatim in the source · abstract, characters 693–833 · show in text ↑
e2

“The isolates were applied in field experiment”

✓ located verbatim in the source · abstract, characters 172–217 · show in text ↑
Associationauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen-fixing bacterial activity reflects onion plant productivity.

Taxon
onionAllium cepae0
Treatment
inoculation with nitrogen fixing bacteriae0
Outcome
onion plant productivitye1

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“This study was carried out to evaluate the influence of inoculation with nitrogen fixing bacteria (Azotobacter and Azospirillum) that were isolated from onion rhizosphere”

✓ located verbatim in the source · abstract, characters 0–170 · show in text ↑
e1

“Also these activities reflect on onion plant productivity”

✓ located verbatim in the source · abstract, characters 835–892 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend applying Azotobacter and Azospirillum as inoculants for onion.

Taxon
onionAllium cepae0
Outcome
the application of Azotobacter and Azospirillum as inoculantse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“This study recommended the application of Azotobacter and Azospirillum as inoculants in onion plant productivity”

✓ located verbatim in the source · abstract, characters 894–1006 · show in text ↑

nitrogen · Azotobacter · Allium cepa (onion)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

inoculation · Azotobacter · Allium cepa (onion)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.