Paper · 2012

Evaluation of PGPR strains on wheat yield and quality parameters.

Metin Turan; Medine Güllüce; Güleray Ağar; et al.

6
claims
6
verbatim quotes
1
citations
3
research areas
—
Not open access

Abstract

N2-fixing and P-solubilizing bacteria are important in plant nutrition increasing N and P uptake by the plants, and playing a significant role as plant growth-promoting rhizobacteria (PGPR) in the biofertilization of crops. In 2007 and 2008, a field study was conducted in two different locations (Erzurum and Ispir) in the Eastern part of Turkey for investigating the effects of two N2-fixing and P-solubilizing PGPR strains alone and in combinations on plant yield and nutrient content of wheat (Triticum aestivum L.) in comparison to control and optimum and half doses of N fertilizer application under field condition. All inoculations and fertilizer applications significantly increased grain yield (GY), straw yield (SY), total yield (TY), and macro and micro nutrients of wheat over the control. Mixed PGPR inoculations with the strain of OSU-142 + M3 + Azospirillum Sp245 has significantly increased grain yield of wheat as good as full doses of nitrogen. The highest leaf, grain, and straw N and S contents were obtained from mixed inoculation (with the OSU-142 + M3 + Azospirillum Sp245 ) +40 kg N ha, but P, K, Mn, Fe, and Zn contents were obtained from Bacillus M3 treatment. The data suggested that seed inoculation with OSU-142 + M3 + Azospirillum Sp245 may reduce fertilizer rates down to 50% in wheat production.

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Claims 6

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Inoculations and fertilizer significantly increased wheat grain, straw and total yields.

Treatment
inoculations and fertilizer applicationse0
Outcome
grain yield (GY), straw yield (SY), total yield (TY)e0
Direction
increasede0
Comparator
the controle0

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

“All inoculations and fertilizer applications significantly increased grain yield (GY), straw yield (SY), total yield (TY), and macro and micro nutrients of wheat over the control”

✓ located verbatim in the source · abstract, characters 623–801 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Inoculations and fertilizer significantly increased wheat macro and micro nutrients.

Treatment
inoculations and fertilizer applicationse0
Outcome
macro and micro nutrients of wheate0
Direction
increasede0
Comparator
the controle0

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

“All inoculations and fertilizer applications significantly increased grain yield (GY), straw yield (SY), total yield (TY), and macro and micro nutrients of wheat over the control”

✓ located verbatim in the source · abstract, characters 623–801 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Mixed PGPR inoculation increased wheat grain yield comparably to full nitrogen dose.

Treatment
Mixed PGPR inoculations with the strain of OSU-142 + M3 + Azospirillum Sp245e0
Interactor
Azospirillum Sp245e0symbiont
Outcome
grain yield of wheate0
Direction
increasede0
Comparator
full doses of nitrogene0

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

“Mixed PGPR inoculations with the strain of OSU-142 + M3 + Azospirillum Sp245 has significantly increased grain yield of wheat as good as full doses of nitrogen”

✓ located verbatim in the source · abstract, characters 803–962 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mixed inoculation plus nitrogen gave highest leaf, grain and straw N and S contents.

Treatment
mixed inoculation (with the OSU-142 + M3 + Azospirillum Sp245 ) +40 kg N hae0
Interactor
Azospirillum Sp245e0symbiont
Outcome
leaf, grain, and straw N and S contentse0
Direction
higheste0

Not reportedTaxonComparator

Verbatim

e0

“The highest leaf, grain, and straw N and S contents were obtained from mixed inoculation (with the OSU-142 + M3 + Azospirillum Sp245 ) +40 kg N ha”

✓ located verbatim in the source · abstract, characters 964–1110 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bacillus M3 treatment gave the highest P, K, Mn, Fe and Zn contents.

Treatment
Bacillus M3 treatmente0
Interactor
Bacillus M3e0symbiont
Outcome
P, K, Mn, Fe, and Zn contentse0

Not reportedTaxonComparatorDirection

Verbatim

e0

“but P, K, Mn, Fe, and Zn contents were obtained from Bacillus M3 treatment”

✓ located verbatim in the source · abstract, characters 1112–1186 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Seed inoculation with three PGPR strains may halve fertilizer rates in wheat production.

Outcome
seed inoculation with OSU-142 + M3 + Azospirillum Sp245e0
Value
50%e0

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

“seed inoculation with OSU-142 + M3 + Azospirillum Sp245 may reduce fertilizer rates down to 50% in wheat production”

✓ located verbatim in the source · abstract, characters 1212–1327 · show in text ↑

Azospirillum · nutrient: content · Triticum aestivum (wheat)Positive and negative results

10 papers: 9 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

6 papers more in this group

See all 10 papers →

Azospirillum · yield · Triticum aestivum (wheat)Results agree

33 papers: 33 positive, 0 negative or no effect

32 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

29 papers more in this group

See all 33 papers →

inoculation · nutrient: content · Triticum aestivum (wheat)Positive and negative results

277 papers: 263 positive, 14 negative or no effect

262 papers in the same direction as this paper · 13 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. negative

273 papers more in this group

See all 277 papers →

nitrogen · nutrient: content · Triticum aestivum (wheat)Positive and negative results

479 papers: 410 positive, 69 negative or no effect

409 papers in the same direction as this paper · 64 in the opposite direction · 5 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

475 papers more in this group

See all 479 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. negative
  3. negative

610 papers more in this group

See all 614 papers →

fertilization · nutrient: content · Triticum aestivum (wheat)Positive and negative results

959 papers: 854 positive, 105 negative or no effect

853 papers in the same direction as this paper · 95 in the opposite direction · 10 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

955 papers more in this group

See all 959 papers →

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

3,438 papers: 3,115 positive, 323 negative or no effect

3,114 papers in the same direction as this paper · 284 in the opposite direction · 39 reporting no difference from an alternative

  1. no effect
  2. negative
  3. negative

3,434 papers more in this group

See all 3,438 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.