Abstract
The experiment was carried out on unsterilized field soil with low phosphorus availability with the objective of examining the effect of cultural practices on mycorrhizal colonization and growth of common bean. The treatments were: three pre-crops (maize, wheat and fallow) followed by three soil management practices ("ploughing", mulching and bare fallow without "ploughing" during the winter months). After the cultural practices, Phaseolus vulgaris cv. Canadian Wonder was grown in this soil. Fallowing and soil disturbance reduced natural soil infectivity. Mycorrhizal infection of the bean roots occurred more rapidly in the recently cropped soil than in the fallow soil. Prior cropping with a strongly mycorrhizal plant (maize) increased infectivity even further. O experimento foi realizado em solo não-esterilizado com baixo teor de fósforo. Os tratamentos foram: três pré-cultivos (milho, trigo e solo nu), seguidos por três manejos do solo (distúrbio mecânico do solo, cobertura morta e solo nu sem distúrbio no inverno). No ano seguinte à aplicação dos tratamentos, a área experimental foi semeada com Phaseolus vulgaris cv. Canadian Wonder. Os tratamentos com solo nu e o submetido a distúrbio mecânico exibiram as menores densidades de esporos de fungos micorrízicos e reduzida infecção radicular do feijoeiro. A infecção micorrízica foi maior nas parcelas anteriormente cultivadas com cereais, especialmente no pré-cultivo com milho.
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Claims 4
Claim · model-written summary
Fallowing reduced natural soil mycorrhizal infectivity.
- Taxon
- Phaseolus vulgaris cv. Canadian Wonder
Phaseolus vulgarise1 - Treatment
- Fallowinge0
- Interactor
- mycorrhizale2symbiont
- Outcome
- natural soil infectivitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fallowing and soil disturbance reduced natural soil infectivity”
e1“Phaseolus vulgaris cv. Canadian Wonder was grown in this soil”
e2“Mycorrhizal infection of the bean roots occurred more rapidly in the recently cropped soil than in the fallow soil”
Claim · model-written summary
Soil disturbance reduced natural soil mycorrhizal infectivity.
- Taxon
- Phaseolus vulgaris cv. Canadian WonderPhaseolus vulgarise1
- Treatment
- soil disturbancee0
- Interactor
- mycorrhizale2symbiont
- Outcome
- natural soil infectivitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fallowing and soil disturbance reduced natural soil infectivity”
e1“Phaseolus vulgaris cv. Canadian Wonder was grown in this soil”
e2“Mycorrhizal infection of the bean roots occurred more rapidly in the recently cropped soil than in the fallow soil”
Claim · model-written summary
Bean roots became mycorrhizally infected more rapidly in recently cropped soil than in fallow soil.
- Taxon
- Phaseolus vulgaris cv. Canadian WonderPhaseolus vulgarise1
- Organ / stage
- bean rootse0
- Treatment
- recently cropped soile0
- Outcome
- Mycorrhizal infection of the bean rootse0
- Direction
- more rapidlye0
- Comparator
- fallow soile0
Not reportedInteractorInteractor role
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mycorrhizal infection of the bean roots occurred more rapidly in the recently cropped soil than in the fallow soil”
e1“Phaseolus vulgaris cv. Canadian Wonder was grown in this soil”
Claim · model-written summary
Prior maize cropping further increased soil mycorrhizal infectivity.
- Taxon
- Phaseolus vulgaris cv. Canadian WonderPhaseolus vulgarise1
- Treatment
- Prior cropping with a strongly mycorrhizal plant (maize)e0
- Outcome
- infectivitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Prior cropping with a strongly mycorrhizal plant (maize) increased infectivity even further”
e1“Phaseolus vulgaris cv. Canadian Wonder was grown in this soil”
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