Paper · 1980

A deficiency of the symbiotic nitrogen fixation in a dry tropical agrosystem: the nitrogen chlorosis of groundnut (Arachis hypogaea) in Senegal.

J. J. Drevon

5
claims
10
verbatim quotes
0
citations
3
research areas
—
Not open access

Abstract

Various types of chlorosis on groundnut (Arachis hypogaea) occur in Senegal. One that spreads over northern Senegal is described here, and identified as a nitrogen chlorosis due to a deficiency of nitrogen fixation resulting from poor nodulation. This chlorosis arises in acid soils, where there may be aluminium and manganese toxicity. No micronutrient deficiency has been found so far. Biotic factors, including the inadequacy of the Rhizobium population and the attacks of nematodes, may be responsible while the existing antagonism of actinomycetes towards Rhizobium would not interfere. Liming and, above all, organic matter application have proved to be means of control of the chlorosis.

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Claims 5

Mechanismobservedoriginal resultnegativemeasured

Claim · model-written summary

A chlorosis of groundnut in northern Senegal was identified as nitrogen chlorosis from deficient fixation and poor nodulation.

Taxon
groundnutArachis hypogaeat0
Outcome
nitrogen chlorosise0
Qualifier
deficiency of nitrogen fixation resulting from poor nodulatione0
Setting
northern Senegale0

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“One that spreads over northern Senegal is described here, and identified as a nitrogen chlorosis due to a deficiency of nitrogen fixation resulting from poor nodulation.”

✓ located verbatim in the source · abstract, characters 77–246 · show in text ↑
t0

“groundnut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 104–132 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

The chlorosis arose in acid soils.

Taxon
groundnutArachis hypogaeat0
Outcome
chlorosise0
Qualifier
there may be aluminium and manganese toxicitye0
Setting
acid soilse0

Not reportedDirection

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“This chlorosis arises in acid soils, where there may be aluminium and manganese toxicity.”

✓ located verbatim in the source · abstract, characters 247–336 · show in text ↑
t0

“groundnut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 104–132 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

No micronutrient deficiency was found.

Taxon
groundnutArachis hypogaeat0
Outcome
No micronutrient deficiencye0

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“No micronutrient deficiency has been found so far.”

✓ located verbatim in the source · abstract, characters 337–387 · show in text ↑
t0

“groundnut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 104–132 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Liming controlled groundnut chlorosis.

Taxon
groundnutArachis hypogaeat0
Treatment
Liminge0
Outcome
control of the chlorosise0

Not reportedComparatorDirection

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“Liming and, above all, organic matter application have proved to be means of control of the chlorosis.”

✓ located verbatim in the source · abstract, characters 592–694 · show in text ↑
t0

“groundnut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 104–132 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Organic matter application controlled groundnut chlorosis.

Taxon
groundnutArachis hypogaeat0
Treatment
organic matter applicatione0
Outcome
control of the chlorosise0

Not reportedComparatorDirection

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“Liming and, above all, organic matter application have proved to be means of control of the chlorosis.”

✓ located verbatim in the source · abstract, characters 592–694 · show in text ↑
t0

“groundnut (Arachis hypogaea)”

✓ located verbatim in the source · title, characters 104–132 · show in text ↑

lime · physiology: pigments · Arachis hypogaea (peanut)Positive and negative results

4 papers: 3 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive
See all 4 papers →

organic · physiology: pigments · Arachis hypogaea (peanut)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 →

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.