Claim · model-written summary
Mycorrhizal (VAM) inoculation did not enhance the ammonium-versus-nitrate difference in soil pH.
- Treatment
- Mycorrhizal (VAM) inoculatione2
- Interactor
- VAMe2symbiont
- Outcome
- soil pHe2
- Direction
- did not enhancee2
SorghumNot reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Uptake by Sorghum”
e2“ammonium as an N source resulted in lower soil pH than nitrate. Mycorrhizal (VAM) inoculation did not enhance this difference”
Title
I. Ortas; D. L. Rowell; P. J. Harris Communications in Soil Science and Plant Analysis 2004. doi:10.1081/css-120030587
Other claims from this paper (7)
- Intervention effect In both soils, ammonium as the N source lowered soil pH relative to nitrate.
- Intervention effect P depletion extended up to 20 mm from the root surface in mycorrhizal inoculated soil, compared with up to 10 mm in non-VAM inoculated soil.
- Intervention effect In mycorrhizal inoculated soils, the 0–5 mm soil zone contributed more to P uptake than the core soil.
- Mechanism The greater contribution of the 0–5 mm zone reflects a hyphal contribution to P supply.
- Intervention effect Nitrogen applications that caused acidification increased P uptake, attributed to increased demand.
- Observation Soil pH changes extended up to 5 mm from the root core surface when the root was uninfected or infected with mycorrhiza.
- Association The magnitude of liberated acid or base depended on the form and rate of nitrogen and soil type.