Paper · 2010 · American-Asian-Journal of agricultural & environmental sciences/American-Eurasian journal of agricultural & environmental sciences

Response of Winter Wheat to Co-Inoculation with Azotobacter and Arbescular Mycorrhizal Fungi (AMF) under Different Sources of Nitrogen Fertilizer

A. Bahrani; J. Pourreza; Mi-Kyoung Joo

16
claims
34
verbatim quotes
29
citations
3
research areas
—
Not open access

Abstract

In order to evaluate the effects of inoculants and chemical fertilizer on quantitative and qualitative yield, a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008. Main plots consisted of nitrogen fertilizer sources, which were ammonium nitrate, ammonium sulfate, urea and SCU (Sulfur Coated Urea). Sub plots consisted of four treatments i.e. control, inoculation of arbuscular mycorrhiza fungi (AMF), Azotobacter chroococcum and dual inoculation of AMF + Azotobacter chroococcum (AMF + Azc). Results showed that the highest plant height was related to SCU fertilizer, resulting to lodging in some plots. The most spike per square meter was obtained by ammonium nitrate and urea fertilizers. Single application of Azotobacter and Mycorrhiza inoculation and in combination to each other increased significantly spike per square meter compared to without inoculation treatment. Ammonium nitrate and ammonium sulfate fertilizers produced more grain per spike than urea and SCU fertilizers. Also, interaction effects of biofertilizers and N sources were significant at 5% probability level in this trait. The highest value of kernel weight was obtained with urea and ammonium nitrate fertilizers and the lowest value was belonged to SCU fertilizer. Maximum kernel weight was found in Azotobacter and Azotobacter+Micorrhiyza and minimum in control and Micorrhiyza treatments. Ammonium nitrate and Azotobacter + Micorrhiyza treatments gave significantly higher grain yield than the other N sources and biofertilizers. Biologic yield and harvest index were only affected by N sources treatments. As, ammonium nitrate and urea fertilizer treatments were higher than two other N sources. Grain protein percent increased up to 19 % in ammonium nitrate than urea and SCU fertilizers. Azotobacter + Micorrhiyza treatment increased grain protein by 13 % than control. In general, results from the present study indicated that grain yield and yield components of wheat have been affected significantly by the inoculation with Azotobacter and Mycorrhiza. Also, ammonium nitrate and ammonium sulfate resulted in increasing grain yield and nitrogen fertilizer efficiency compared with urea and SCU.

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Claims 16

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

SCU fertilizer gave the highest plant height of wheat, resulting in lodging in some plots.

Treatment
SCU fertilizere1
Outcome
plant heighte1
Direction
higheste1
Qualifier
resulting to lodging in some plotse1
Setting
Fars Agricultural Research Statione0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e1

“the highest plant height was related to SCU fertilizer, resulting to lodging in some plots”

✓ located verbatim in the source · abstract, characters 712–802 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ammonium nitrate and urea fertilizers gave the most spikes per square meter of wheat.

Treatment
ammonium nitrate and urea fertilizerse2
Outcome
spike per square metere2
Direction
moste2
Setting
Fars Agricultural Research Statione0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e2

“The most spike per square meter was obtained by ammonium nitrate and urea fertilizers”

✓ located verbatim in the source · abstract, characters 804–889 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Single or combined Azotobacter and mycorrhiza inoculation significantly increased spikes per square meter of wheat compared with no inoculation.

Treatment
Azotobacter and Mycorrhiza inoculatione3
Interactor
AzotobacterAzotobactere3symbiont
Second interactor
Mycorrhizae3symbiont
Outcome
spike per square metere3
Direction
increased significantlye3
Comparator
without inoculation treatmente3
Setting
Fars Agricultural Research Statione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · 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 ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e3

“Single application of Azotobacter and Mycorrhiza inoculation and in combination to each other increased significantly spike per square meter compared to without inoculation treatment”

✓ located verbatim in the source · abstract, characters 891–1073 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ammonium nitrate and ammonium sulfate produced more grain per spike than urea and SCU fertilizers.

Treatment
Ammonium nitrate and ammonium sulfate fertilizerse4
Outcome
grain per spikee4
Direction
moree4
Comparator
urea and SCU fertilizerse4
Setting
Fars Agricultural Research Statione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e4

“Ammonium nitrate and ammonium sulfate fertilizers produced more grain per spike than urea and SCU fertilizers”

✓ located verbatim in the source · abstract, characters 1075–1184 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

The interaction of biofertilizers and N sources was significant for grain per spike of wheat at the 5% level.

Treatment
biofertilizers and N sourcese5
Outcome
interaction effects of biofertilizers and N sourcese5
Setting
Fars Agricultural Research Statione0

Not reportedDirection

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e5

“interaction effects of biofertilizers and N sources were significant at 5% probability level in this trait”

✓ located verbatim in the source · abstract, characters 1192–1298 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Urea and ammonium nitrate fertilizers gave the highest kernel weight of wheat.

Treatment
urea and ammonium nitrate fertilizerse6
Outcome
kernel weighte6
Direction
higheste6
Setting
Fars Agricultural Research Statione0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e6

“The highest value of kernel weight was obtained with urea and ammonium nitrate fertilizers”

✓ located verbatim in the source · abstract, characters 1300–1390 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

SCU fertilizer gave the lowest kernel weight of wheat.

Treatment
SCU fertilizere7
Outcome
kernel weighte6
Direction
loweste7
Setting
Fars Agricultural Research Statione0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e6

“The highest value of kernel weight was obtained with urea and ammonium nitrate fertilizers”

✓ located verbatim in the source · abstract, characters 1300–1390 · show in text ↑
e7

“the lowest value was belonged to SCU fertilizer”

✓ located verbatim in the source · abstract, characters 1395–1442 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Azotobacter and Azotobacter plus mycorrhiza gave the maximum kernel weight of wheat.

Treatment
Azotobacter and Azotobacter+Micorrhiyzae1
Outcome
kernel weighte1
Direction
Maximume1
Setting
Fars Agricultural Research Statione0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e1

“Maximum kernel weight was found in Azotobacter and Azotobacter+Micorrhiyza and minimum in control and Micorrhiyza treatments”

✓ located verbatim in the source · abstract, characters 1444–1568 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Control and mycorrhiza treatments gave the minimum kernel weight of wheat.

Treatment
control and Micorrhiyza treatmentse1
Outcome
kernel weighte1
Direction
minimume1
Setting
Fars Agricultural Research Statione0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e1

“Maximum kernel weight was found in Azotobacter and Azotobacter+Micorrhiyza and minimum in control and Micorrhiyza treatments”

✓ located verbatim in the source · abstract, characters 1444–1568 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Ammonium nitrate gave significantly higher wheat grain yield than the other N sources and biofertilizers.

Treatment
Ammonium nitratee2
Outcome
grain yielde2
Direction
highere2
Comparator
the other N sources and biofertilizerse2
Setting
Fars Agricultural Research Statione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e2

“Ammonium nitrate and Azotobacter + Micorrhiyza treatments gave significantly higher grain yield than the other N sources and biofertilizers”

✓ located verbatim in the source · abstract, characters 1570–1709 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Azotobacter plus mycorrhiza gave significantly higher wheat grain yield than the other N sources and biofertilizers.

Treatment
Azotobacter + Micorrhiyzae2
Interactor
AzotobacterAzotobactere2symbiont
Second interactor
Micorrhiyzae2symbiont
Outcome
grain yielde2
Direction
highere2
Comparator
the other N sources and biofertilizerse2
Setting
Fars Agricultural Research Statione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · 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 ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e2

“Ammonium nitrate and Azotobacter + Micorrhiyza treatments gave significantly higher grain yield than the other N sources and biofertilizers”

✓ located verbatim in the source · abstract, characters 1570–1709 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Biological yield and harvest index of wheat were affected only by N sources.

Treatment
N sourcese1
Outcome
Biologic yield and harvest indexe1
Direction
affectede1
Setting
Fars Agricultural Research Statione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e1

“Biologic yield and harvest index were only affected by N sources treatments”

✓ located verbatim in the source · abstract, characters 1711–1786 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ammonium nitrate and urea fertilizer treatments gave higher biological yield and harvest index of wheat than the two other N sources.

Treatment
ammonium nitrate and urea fertilizer treatmentse2
Outcome
Biologic yield and harvest indexe1
Direction
highere2
Comparator
two other N sourcese2
Setting
Fars Agricultural Research Statione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e1

“Biologic yield and harvest index were only affected by N sources treatments”

✓ located verbatim in the source · abstract, characters 1711–1786 · show in text ↑
e2

“ammonium nitrate and urea fertilizer treatments were higher than two other N sources”

✓ located verbatim in the source · abstract, characters 1792–1876 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ammonium nitrate increased wheat grain protein by 19% compared with urea and SCU fertilizers.

Treatment
ammonium nitratee1
Outcome
Grain protein percente1
Direction
increasede1
Value
19 %e1
Comparator
urea and SCU fertilizerse1
Setting
Fars Agricultural Research Statione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e1

“Grain protein percent increased up to 19 % in ammonium nitrate than urea and SCU fertilizers”

✓ located verbatim in the source · abstract, characters 1878–1970 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Azotobacter plus mycorrhiza increased wheat grain protein by 13% compared with control.

Treatment
Azotobacter + Micorrhiyza treatmente1
Outcome
grain proteine1
Direction
increasede1
Value
13 %e1
Comparator
controle1
Setting
Fars Agricultural Research Statione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e1

“Azotobacter + Micorrhiyza treatment increased grain protein by 13 % than control”

✓ located verbatim in the source · abstract, characters 1972–2052 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ammonium nitrate and ammonium sulfate increased wheat grain yield and nitrogen fertilizer efficiency compared with urea and SCU.

Treatment
ammonium nitrate and ammonium sulfatee1
Outcome
grain yield and nitrogen fertilizer efficiencye1
Direction
increasinge1
Comparator
urea and SCUe1
Setting
Fars Agricultural Research Statione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“a bread wheat cultivar treated with Azotobacter, arbuscular mycorrhiza fungi (AMF) and nitrogen sources by using split plot on the basis of randomized complete block design with three replications in Fars Agricultural Research Station during 2007-2008”

✓ located verbatim in the source · abstract, characters 110–361 · show in text ↑
e1

“ammonium nitrate and ammonium sulfate resulted in increasing grain yield and nitrogen fertilizer efficiency compared with urea and SCU”

✓ located verbatim in the source · abstract, characters 2245–2379 · show in text ↑

ammonium sulfate · yield · Triticum aestivum (wheat)Results differ

32 papers: 27 positive, 5 negative or no effect

26 papers in the same direction as this paper · 3 in the opposite direction · 2 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

28 papers more in this group

See all 32 papers →

Azotobacter · yield · Triticum aestivum (wheat)Results differ

88 papers: 87 positive, 1 negative or no effect

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

  1. positive
  2. positive
  3. positive

84 papers more in this group

See all 88 papers →

ammonium nitrate · quality: protein · Triticum aestivum (wheat)Positive and negative results

9 papers: 8 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

ammonium nitrate · yield · Triticum aestivum (wheat)Positive and negative results

54 papers: 49 positive, 5 negative or no effect

48 papers in the same direction as this paper · 5 in the opposite direction

  1. negative
  2. negative
  3. negative

50 papers more in this group

See all 54 papers →

Azotobacter · quality: protein · Triticum aestivum (wheat)Results agree

9 papers: 9 positive, 0 negative or no effect

8 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

mycorrhiza · yield · Triticum aestivum (wheat)Positive and negative results

103 papers: 95 positive, 8 negative or no effect

94 papers in the same direction as this paper · 7 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

99 papers more in this group

See all 103 papers →

inoculation · yield · Triticum aestivum (wheat)Positive and negative results

614 papers: 549 positive, 65 negative or no effect

548 papers in the same direction as this paper · 60 in the opposite direction · 5 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

610 papers more in this group

See all 614 papers →

nitrogen · yield · Triticum aestivum (wheat)Positive and negative results

2,061 papers: 1,737 positive, 324 negative or no effect

1,736 papers in the same direction as this paper · 285 in the opposite direction · 39 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

2,057 papers more in this group

See all 2,061 papers →

8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.