Paper · 2019 · Pesquisa Agropecuária Tropical

Azospirillum brasilense inoculation methods in corn and sorghum

Agner de Freitas Andrade; Tiago Zoz; André Zoz; et al.

7
claims
7
verbatim quotes
16
citations
2
research areas
✓
Open access · cc-by

Abstract

ABSTRACT The Azospirillum brasilense inoculation is usually carried out via seed. However, this bacterium presents passive penetration in the plant, what makes it possible to inoculate the crops using other methods. This study aimed to evaluate the influence of A. brasilense inoculation methods on the emergence and initial growth of corn and sorghum, under greenhouse conditions. A randomized block design, with four replications, in a 4 x 2 factorial scheme, was used. The first factor consisted of a control treatment (without inoculation) and three inoculation methods: via seed, via sowing furrow and via leaf spray. The second factor was composed by two hybrids of corn and two of sorghum. The application of A. brasilense to the seed can reduce the emergence percentage and the emergence speed index of corn seedlings, depending on the genotype, but its application does not influence the initial growth of the plants. The A. brasilense inoculation via seed and via sowing furrow can reduce the emergence and increase the mean emergence time of sorghum seedlings, depending on the genotype. The A. brasilense inoculation via seed results in an increase in the dry mass of the root system of sorghum plants.

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

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Claims 7

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Seed application of A. brasilense could reduce corn emergence percentage and speed depending on genotype.

Treatment
application of A. brasilense to the seede0
Interactor
A. brasilenseAzospirillum brasilensee0symbiont
Outcome
emergence percentage and the emergence speed indexe0
Direction
reducee0
Qualifier
depending on the genotypee0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗
Azospirillum brasilense
Azospirillum brasilense · InteractorCristiane Colodel · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“The application of A. brasilense to the seed can reduce the emergence percentage and the emergence speed index of corn seedlings, depending on the genotype”

✓ located verbatim in the source · abstract, characters 697–852 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Seed application did not influence initial corn growth.

Treatment
application of A. brasilense to the seede0
Interactor
A. brasilenseAzospirillum brasilensee0symbiont
Outcome
initial growthe0
Direction
does not influencee0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗
Azospirillum brasilense
Azospirillum brasilense · InteractorCristiane Colodel · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“The application of A. brasilense to the seed can reduce the emergence percentage and the emergence speed index of corn seedlings, depending on the genotype, but its application does not influence the initial growth of the plants”

✓ located verbatim in the source · abstract, characters 697–925 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Seed inoculation reduced sorghum emergence, depending on genotype.

Taxon
sorghumSorghume0
Treatment
inoculation via seede0
Interactor
A. brasilenseAzospirillum brasilensee0symbiont
Outcome
emergencee0
Direction
reducee0

Not reportedComparator

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗
Azospirillum brasilense
Azospirillum brasilense · InteractorCristiane Colodel · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“The A. brasilense inoculation via seed and via sowing furrow can reduce the emergence and increase the mean emergence time of sorghum seedlings, depending on the genotype”

✓ located verbatim in the source · abstract, characters 927–1097 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Furrow inoculation reduced sorghum emergence, depending on genotype.

Taxon
sorghumSorghume0
Treatment
via sowing furrowe0
Interactor
A. brasilenseAzospirillum brasilensee0symbiont
Outcome
emergencee0
Direction
reducee0

Not reportedComparator

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗
Azospirillum brasilense
Azospirillum brasilense · InteractorCristiane Colodel · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“The A. brasilense inoculation via seed and via sowing furrow can reduce the emergence and increase the mean emergence time of sorghum seedlings, depending on the genotype”

✓ located verbatim in the source · abstract, characters 927–1097 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Seed inoculation increased mean sorghum emergence time.

Taxon
sorghumSorghume0
Treatment
inoculation via seede0
Interactor
A. brasilenseAzospirillum brasilensee0symbiont
Outcome
mean emergence timee0
Direction
increasee0

Not reportedComparator

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗
Azospirillum brasilense
Azospirillum brasilense · InteractorCristiane Colodel · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“The A. brasilense inoculation via seed and via sowing furrow can reduce the emergence and increase the mean emergence time of sorghum seedlings, depending on the genotype”

✓ located verbatim in the source · abstract, characters 927–1097 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Furrow inoculation increased mean sorghum emergence time.

Taxon
sorghumSorghume0
Treatment
via sowing furrowe0
Interactor
A. brasilenseAzospirillum brasilensee0symbiont
Outcome
mean emergence timee0
Direction
increasee0

Not reportedComparator

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗
Azospirillum brasilense
Azospirillum brasilense · InteractorCristiane Colodel · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“The A. brasilense inoculation via seed and via sowing furrow can reduce the emergence and increase the mean emergence time of sorghum seedlings, depending on the genotype”

✓ located verbatim in the source · abstract, characters 927–1097 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Seed inoculation increased sorghum root dry mass.

Taxon
sorghumSorghume0
Treatment
inoculation via seede0
Interactor
A. brasilenseAzospirillum brasilensee0symbiont
Outcome
dry mass of the root systeme0
Direction
increasee0

Not reportedComparator

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗
Azospirillum brasilense
Azospirillum brasilense · InteractorCristiane Colodel · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“The A. brasilense inoculation via seed results in an increase in the dry mass of the root system of sorghum plants”

✓ located verbatim in the source · abstract, characters 1099–1213 · show in text ↑

Azospirillum brasilense · growth · Zea mays (maize)Results differ

49 papers: 41 positive, 8 negative or no effect

7 papers in the same direction as this paper · 41 in the opposite direction

  1. positive
  2. positive
  3. positive

45 papers more in this group

See all 49 papers →

inoculation · Azospirillum brasilense · SorghumResults agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 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.