Paper · 2000 · Canadian Journal of Soil Science

Rhizobial inoculant formulations and soil pH influence field pea nodulation and nitrogen fixation

W. A. Rice; G. W. Clayton; P. E. Olsen; et al.

7
claims
21
verbatim quotes
47
citations
3
research areas
—
Not open access

Abstract

Crop production systems that include field pea (Pisum sativum L.) in rotation are important for sustainable agriculture on acid soils in northwestern Canada. Greenhouse experiments were conducted to compare the ability of liquid inoculant applied to the seed, powdered peat inoculant applied to the seed, and granular inoculant applied in a band with the seed to establish effective nodulation on field pea grown at soil pH(H 2 O) 4.4, 5.4 and 6.6. Plants were grown to the flat pod stage, and then total plant biomass dry weight, dry weight of nodules, number of nodules, plant nitrogen content, and proportion of plant nitrogen derived from the atmosphere (%Ndfa) were measured. Granular and powdered peat inoculants produced greater nodule numbers and weight, plant nitrogen content, %Ndfa and total biomass than liquid inoculant in at least two of the three experiments. Only granular inoculant was effective in establishing nodules at soil pH 4.4, but granular and powdered peat inoculants were effective at pH 5.4, and all three formulations were effective at pH 6.6. The results showed that granular inoculant has potential for effective nodulation of field pea grown on acid soil. Key words: Rhizobium, inoculant formulations, field pea, nodulation, acid soil

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Claims 7

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Granular and powdered peat inoculants produced greater nodule number and weight than liquid inoculant in at least two experiments.

Taxon
field peat0
Treatment
Granular and powdered peat inoculantse0
Interactor
RhizobiumRhizobiumt1symbiont
Outcome
nodule numbers and weighte0
Direction
greatere0
Qualifier
in at least two of the three experimentse0
Comparator
liquid inoculante0

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

Rhizobium
Rhizobium · Interactor · picture of the genus (one of its species)Ninjatacoshell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Granular and powdered peat inoculants produced greater nodule numbers and weight, plant nitrogen content, %Ndfa and total biomass than liquid inoculant in at least two of the three experiments”

✓ located verbatim in the source · abstract, characters 681–873 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 55–64 · show in text ↑
t1

“Rhizobium”

✓ located verbatim in the source · abstract, characters 1200–1209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Granular and powdered peat inoculants produced greater plant nitrogen content and %Ndfa than liquid inoculant.

Taxon
field peat0
Treatment
Granular and powdered peat inoculantse0
Interactor
RhizobiumRhizobiumt1symbiont
Outcome
plant nitrogen content, %Ndfae0
Direction
greatere0
Qualifier
in at least two of the three experimentse0
Comparator
liquid inoculante0

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

Rhizobium
Rhizobium · Interactor · picture of the genus (one of its species)Ninjatacoshell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Granular and powdered peat inoculants produced greater nodule numbers and weight, plant nitrogen content, %Ndfa and total biomass than liquid inoculant in at least two of the three experiments”

✓ located verbatim in the source · abstract, characters 681–873 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 55–64 · show in text ↑
t1

“Rhizobium”

✓ located verbatim in the source · abstract, characters 1200–1209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Granular and powdered peat inoculants produced greater total biomass than liquid inoculant.

Taxon
field peat0
Treatment
Granular and powdered peat inoculantse0
Interactor
RhizobiumRhizobiumt1symbiont
Outcome
total biomasse0
Direction
greatere0
Qualifier
in at least two of the three experimentse0
Comparator
liquid inoculante0

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

Rhizobium
Rhizobium · Interactor · picture of the genus (one of its species)Ninjatacoshell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Granular and powdered peat inoculants produced greater nodule numbers and weight, plant nitrogen content, %Ndfa and total biomass than liquid inoculant in at least two of the three experiments”

✓ located verbatim in the source · abstract, characters 681–873 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 55–64 · show in text ↑
t1

“Rhizobium”

✓ located verbatim in the source · abstract, characters 1200–1209 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Only granular inoculant established nodules at soil pH 4.4.

Taxon
field peat0
Treatment
granular inoculante0
Interactor
RhizobiumRhizobiumt1symbiont
Outcome
establishing nodulese0
Qualifier
soil pH 4.4e0

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

Rhizobium
Rhizobium · Interactor · picture of the genus (one of its species)Ninjatacoshell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Only granular inoculant was effective in establishing nodules at soil pH 4.4”

✓ located verbatim in the source · abstract, characters 875–951 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 55–64 · show in text ↑
t1

“Rhizobium”

✓ located verbatim in the source · abstract, characters 1200–1209 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Granular and powdered peat inoculants established nodules at pH 5.4.

Taxon
field peat0
Treatment
granular and powdered peat inoculantse0
Interactor
RhizobiumRhizobiumt1symbiont
Outcome
effectivee0
Qualifier
pH 5.4e0

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

Rhizobium
Rhizobium · Interactor · picture of the genus (one of its species)Ninjatacoshell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“granular and powdered peat inoculants were effective at pH 5.4”

✓ located verbatim in the source · abstract, characters 957–1019 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 55–64 · show in text ↑
t1

“Rhizobium”

✓ located verbatim in the source · abstract, characters 1200–1209 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

All three inoculant formulations established nodules at pH 6.6.

Taxon
field peat0
Treatment
all three formulationse0
Interactor
RhizobiumRhizobiumt1symbiont
Outcome
effectivee0
Qualifier
pH 6.6e0

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

Rhizobium
Rhizobium · Interactor · picture of the genus (one of its species)Ninjatacoshell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“all three formulations were effective at pH 6.6”

✓ located verbatim in the source · abstract, characters 1025–1072 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 55–64 · show in text ↑
t1

“Rhizobium”

✓ located verbatim in the source · abstract, characters 1200–1209 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Granular inoculant has potential for effective nodulation of field pea on acid soil.

Taxon
field peae0
Treatment
granular inoculante0
Interactor
RhizobiumRhizobiumt1symbiont
Outcome
effective nodulatione0
Qualifier
acid soile0

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

Rhizobium
Rhizobium · Interactor · picture of the genus (one of its species)Ninjatacoshell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“granular inoculant has potential for effective nodulation of field pea grown on acid soil”

✓ located verbatim in the source · abstract, characters 1098–1187 · show in text ↑
t0

“field pea”

✓ located verbatim in the source · title, characters 55–64 · show in text ↑
t1

“Rhizobium”

✓ located verbatim in the source · abstract, characters 1200–1209 · show in text ↑

inoculation · Rhizobium · Lathyrus oleraceus (pea)Results differ

23 papers: 19 positive, 4 negative or no effect

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

  1. negative
  2. no effect
  3. no effect

19 papers more in this group

See all 23 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.