Abstract
SUMMARY DBCP fumigation of a typical sandy soil of Central Senegal (Dior soil) on which groundnut is commonly cultivated significantly reduced the size of Scutellonema cavenessi populations, favoured early infection by endomycorrhizae in two of the three groundnut cultivars studied, increased nodulation and nitrogen fixation (measured by the acetylene essay), and dramatically increased crop yields. From these results, it is concluded that S. cavenessi does alter the physiology of the groundnut plant, by affecting the establishment and Iunctioning of the symbioses between the plant and both endomycorrhizae and Rhizobium. Thus, parasitism by this nematode reduces the talie-up of phosphorus by the plant as well as its ability to fix nitrogen. . R~SUM~ Influence d’un traiternent nematicide avec le 1,2 dibro1no-3-chloropropane sur les populations de nematodes, l’infection mytorhizienne, la fixation de N, et les rendements de l’arachide Le traitement nematicide d’un sol Dior typique du Centre Senegal cultive en arachide au moyen du DBCP reduit significativement les populations de Scutellonema cavenessi; ameliore, chez deux sur trois des cultivars utilises, ,l’infection endomycorhizienne precoce ; accroit la fixation de l’azote mesuree par la methode de l’acetylene ; accroit de facon spectaculaire les rendements de l’arachide. On deduit de ces resultats qu’en alterant la physiologie de l’arachide, S. caueizessi handicaperait I’etablissement et le fonctionnement de la double symbiose qui s’etablit entre la plante, les endomycorhizes et les Rhizobium, reduisant ainsi d’une part l’absorption du phosphore el d’autre part son aptitude a fixer l’azote atmospherique
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Claims 6
Claim · model-written summary
DBCP fumigation reduced size of Scutellonema cavenessi populations in groundnut.
- Taxon
- groundnut
Arachis hypogaeae0 - Treatment
- DBCP fumigatione0
- Interactor
- Scutellonema cavenessiScutellonema cavenessie0pest
- Outcome
- size of Scutellonema cavenessi populationse0
- Direction
- reducede0
- Setting
- Central Senegale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DBCP fumigation of a typical sandy soil of Central Senegal (Dior soil) on which groundnut is commonly cultivated significantly reduced the size of Scutellonema cavenessi populations, favoured early infection by endomycorrhizae in two of the three groundnut cultivars studied, increased nodulation and nitrogen fixation (measured by the acetylene essay), and dramatically increased crop yields.”
Claim · model-written summary
DBCP fumigation favoured early infection by endomycorrhizae in groundnut.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- DBCP fumigatione0
- Interactor
- endomycorrhizaee0symbiont
- Outcome
- early infection by endomycorrhizaee0
- Direction
- favourede0
- Setting
- Central Senegale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DBCP fumigation of a typical sandy soil of Central Senegal (Dior soil) on which groundnut is commonly cultivated significantly reduced the size of Scutellonema cavenessi populations, favoured early infection by endomycorrhizae in two of the three groundnut cultivars studied, increased nodulation and nitrogen fixation (measured by the acetylene essay), and dramatically increased crop yields.”
Claim · model-written summary
DBCP fumigation increased nodulation and nitrogen fixation in groundnut.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- DBCP fumigatione0
- Outcome
- nodulation and nitrogen fixatione0
- Direction
- increasede0
- Setting
- Central Senegale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DBCP fumigation of a typical sandy soil of Central Senegal (Dior soil) on which groundnut is commonly cultivated significantly reduced the size of Scutellonema cavenessi populations, favoured early infection by endomycorrhizae in two of the three groundnut cultivars studied, increased nodulation and nitrogen fixation (measured by the acetylene essay), and dramatically increased crop yields.”
Claim · model-written summary
DBCP fumigation increased crop yields in groundnut.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- DBCP fumigatione0
- Outcome
- crop yieldse0
- Direction
- increasede0
- Setting
- Central Senegale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DBCP fumigation of a typical sandy soil of Central Senegal (Dior soil) on which groundnut is commonly cultivated significantly reduced the size of Scutellonema cavenessi populations, favoured early infection by endomycorrhizae in two of the three groundnut cultivars studied, increased nodulation and nitrogen fixation (measured by the acetylene essay), and dramatically increased crop yields.”
Claim · model-written summary
Authors infer that S. cavenessi affects groundnut symbioses with endomycorrhizae and Rhizobium.
- Taxon
- groundnutArachis hypogaeae0
- Interactor
- S. cavenessiScutellonema cavenessie0pest
- Second interactor
- endomycorrhizaee0symbiont
- Outcome
- establishment and Iunctioning of the symbiosese0
- Qualifier
- Rhizobiume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“From these results, it is concluded that S. cavenessi does alter the physiology of the groundnut plant, by affecting the establishment and Iunctioning of the symbioses between the plant and both endomycorrhizae and Rhizobium.”
Claim · model-written summary
Nematode parasitism was inferred to reduce groundnut phosphorus uptake and nitrogen fixation.
- Taxon
- groundnutArachis hypogaeat0
- Outcome
- talie-up of phosphorus by the plant as well as its ability to fix nitrogene0
- Direction
- reducese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thus, parasitism by this nematode reduces the talie-up of phosphorus by the plant as well as its ability to fix nitrogen.”
t0“groundnut”
The same questions in other papers
1,2-Dibromo-3-chloropropane · yield · Arachis hypogaea (peanut)Results differ
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- no effect
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See all 10 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.