Paper · 2010 · Journal of Food Agriculture & Environment

The role of Azospirillum lipoferum bacteria in sustainable production of sunflower (Helianthus annuus L.).

Ahmad Afkari Bajehbaj

8
claims
16
verbatim quotes
1
citations
3
research areas
—
Not open access

Abstract

This research was carried out to study the effect of Azospirillum lipoferum on declining the consumption of nitrogen fertilizer on two sunflower cultivars Armawireski and Alestar at the Research Station of the Faculty of Agriculture in Baku State University. The nitrogen fertilizer was applied in four levels (0, 70, 140 and 210 kg/ha) with or without inoculation of seeds by Azospirillum bacteria. The treated seeds were inoculated with peatbased inoculants of Azospirillum lipoferum, with 2x10 7 cells per g of carrier. A factorial experiment, conducted with three replications on the base of randomized complete block design, revealed that nitrogen fertilizer inoculation with Azospirillum could lead to increase in grain yield and yield components. Using nitrogen fertilizer and bacteria together caused declining of the use of nitrogen and increasing of the grain yield. Increasing the nitrogen fertilizer amount to 210 kg/ha and inoculation led to declining of yield to less than that of 140 kg/ha treatment. The results revealed that in the case of inoculation with Azospirillum lipoferum, the highest grain yield (5.14 t/ha) was produced and without inoculation the lowest grain yield (3.68 t/ha) was obtained. The results showed that the inoculation with Azospirillum increases the yield, percentage of nitrogen in grains, number of grains in a row, flag leaf area, head length and number of grains in head. It can be concluded that by using 140 kg of nitrogen fertilizer per hectare and inoculation of maize seeds by Azospirillum could decline the application of nitrogen fertilizer, increases the grain yield up to 30 percent and prevents the pollution of environment by extended sustainable agriculture.

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Claims 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Using nitrogen fertilizer together with Azospirillum bacteria reduced the use of nitrogen in sunflower.

Taxon
Helianthus annuus L.Helianthus annuust0
Treatment
nitrogen fertilizer and bacteria togethere1
Interactor
bacteriaBacteriae1symbiont
Outcome
use of nitrogene1
Direction
declininge1

Not reportedComparator

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Helianthus annuus L.”

✓ located verbatim in the source · title, characters 84–104 · show in text ↑
e1

“Using nitrogen fertilizer and bacteria together caused declining of the use of nitrogen and increasing of the grain yield”

✓ located verbatim in the source · abstract, characters 754–875 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Using nitrogen fertilizer together with Azospirillum bacteria increased sunflower grain yield.

Taxon
Helianthus annuus L.Helianthus annuust0
Treatment
nitrogen fertilizer and bacteria togethere1
Interactor
bacteriaBacteriae1symbiont
Outcome
grain yielde1
Direction
increasinge1

Not reportedComparator

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Helianthus annuus L.”

✓ located verbatim in the source · title, characters 84–104 · show in text ↑
e1

“Using nitrogen fertilizer and bacteria together caused declining of the use of nitrogen and increasing of the grain yield”

✓ located verbatim in the source · abstract, characters 754–875 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Raising nitrogen fertilizer to 210 kg/ha with inoculation reduced yield to less than that of the 140 kg/ha treatment.

Taxon
Helianthus annuus L.Helianthus annuust0
Treatment
nitrogen fertilizer amount to 210 kg/ha and inoculatione2
Outcome
yielde2
Direction
declininge2
Comparator
140 kg/ha treatmente2

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Helianthus annuus L.”

✓ located verbatim in the source · title, characters 84–104 · show in text ↑
e2

“Increasing the nitrogen fertilizer amount to 210 kg/ha and inoculation led to declining of yield to less than that of 140 kg/ha treatment”

✓ located verbatim in the source · abstract, characters 877–1014 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

With Azospirillum lipoferum inoculation the highest sunflower grain yield, 5.14 t/ha, was obtained.

Taxon
Helianthus annuus L.Helianthus annuust0
Treatment
inoculation with Azospirillum lipoferume3
Interactor
Azospirillum lipoferumAzospirillum lipoferume3symbiont
Outcome
grain yielde3
Direction
higheste3
Value
5.14 t/hae3
Comparator
without inoculatione3

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Helianthus annuus L.”

✓ located verbatim in the source · title, characters 84–104 · show in text ↑
e3

“in the case of inoculation with Azospirillum lipoferum, the highest grain yield (5.14 t/ha) was produced and without inoculation the lowest grain yield (3.68 t/ha) was obtained”

✓ located verbatim in the source · abstract, characters 1042–1218 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Without inoculation the lowest sunflower grain yield, 3.68 t/ha, was obtained.

Taxon
Helianthus annuus L.Helianthus annuust0
Outcome
grain yielde3
Value
3.68 t/hae3
Qualifier
without inoculatione3

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Helianthus annuus L.”

✓ located verbatim in the source · title, characters 84–104 · show in text ↑
e3

“in the case of inoculation with Azospirillum lipoferum, the highest grain yield (5.14 t/ha) was produced and without inoculation the lowest grain yield (3.68 t/ha) was obtained”

✓ located verbatim in the source · abstract, characters 1042–1218 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Azospirillum inoculation increased yield, percentage of nitrogen in grains and number of grains in a row in sunflower.

Taxon
Helianthus annuus L.Helianthus annuust0
Treatment
inoculation with Azospirillume0
Interactor
AzospirillumAzospirillume0symbiont
Outcome
yield, percentage of nitrogen in grains, number of grains in a rowe0
Direction
increasese0

Not reportedComparator

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗
Azospirillum
Azospirillum · InteractorFadelblaid · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Helianthus annuus L.”

✓ located verbatim in the source · title, characters 84–104 · show in text ↑
e0

“the inoculation with Azospirillum increases the yield, percentage of nitrogen in grains, number of grains in a row, flag leaf area, head length and number of grains in head”

✓ located verbatim in the source · abstract, characters 1244–1416 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Azospirillum inoculation increased flag leaf area, head length and number of grains in head in sunflower.

Taxon
Helianthus annuus L.Helianthus annuust0
Treatment
inoculation with Azospirillume0
Interactor
AzospirillumAzospirillume0symbiont
Outcome
flag leaf area, head length and number of grains in heade0
Direction
increasese0

Not reportedComparator

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗
Azospirillum
Azospirillum · InteractorFadelblaid · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Helianthus annuus L.”

✓ located verbatim in the source · title, characters 84–104 · show in text ↑
e0

“the inoculation with Azospirillum increases the yield, percentage of nitrogen in grains, number of grains in a row, flag leaf area, head length and number of grains in head”

✓ located verbatim in the source · abstract, characters 1244–1416 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Using 140 kg nitrogen fertilizer per hectare with Azospirillum inoculation could reduce nitrogen fertilizer application and raise grain yield by up to 30 percent.

Taxon
Helianthus annuus L.Helianthus annuust0
Treatment
140 kg of nitrogen fertilizer per hectare and inoculatione4
Interactor
AzospirillumAzospirillume4symbiont
Outcome
decline the application of nitrogen fertilizer, increases the grain yielde4
Value
up to 30 percente4

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗
Azospirillum
Azospirillum · InteractorFadelblaid · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Helianthus annuus L.”

✓ located verbatim in the source · title, characters 84–104 · show in text ↑
e4

“by using 140 kg of nitrogen fertilizer per hectare and inoculation of maize seeds by Azospirillum could decline the application of nitrogen fertilizer, increases the grain yield up to 30 percent”

✓ located verbatim in the source · abstract, characters 1443–1637 · show in text ↑

Azospirillum lipoferum · yield · Helianthus annuus (common sunflower)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 →

Azospirillum · yield · Helianthus annuus (common sunflower)Results agree

6 papers: 6 positive, 0 negative or no effect

5 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

inoculation · Bacteria · Helianthus annuus (common sunflower)Positive and negative results

6 papers: 5 positive, 1 negative or no effect

4 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

inoculation · yield · Helianthus annuus (common sunflower)Positive and negative results

55 papers: 48 positive, 7 negative or no effect

47 papers in the same direction as this paper · 5 in the opposite direction · 2 reporting no difference from an alternative

  1. negative
  2. no effect
  3. no effect

51 papers more in this group

See all 55 papers →

fertilization · yield · Helianthus annuus (common sunflower)Positive and negative results

365 papers: 344 positive, 21 negative or no effect

20 papers in the same direction as this paper · 344 in the opposite direction

  1. positive
  2. positive
  3. positive

361 papers more in this group

See all 365 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.