Claim · model-written summary
Without ammonium, plants lowered soil pH by 0.3 units.
- Taxon
- Lupin and subterranean clover
Lupinus
Trifolium subterraneume0 - Treatment
- without added NH4+e0
- Outcome
- soil pHe0
- Direction
- decreasede0
- Value
- 0.3 unitse0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lupin and subterranean clover grown without added NH4+ for 82 days decreased soil pH by 0.3 units at all depths”
Title
Understanding subsoil acidification: effect of nitrogen transformation and nitrate leaching
Z. Rengel; C. Tang; C. Raphael; et al. Australian Journal of Soil Research 2000. doi:10.1071/sr99109
Other claims from this paper (10)
- Observation Lupin roots concentrated in the top soil layer.
- Observation Clover roots concentrated in the top soil layer.
- Intervention effect Plants without added nitrate lowered soil pH by up to 0.7 units, most strongly in the top 20 cm.
- Association Soil pH decrease correlated with root length density.
- Intervention effect Calcium nitrate addition caused about 0.1 pH units less acidification.
- Intervention effect Ammonium sulfate increased nitrate concentration across layers.
- Intervention effect Ammonium sulfate caused greater topsoil acidification under lupin.
- Intervention effect Ammonium sulfate caused less subsoil acidification under lupin.
- Intervention effect Ammonium sulfate caused greater topsoil acidification under clover.
- Intervention effect Ammonium sulfate caused less subsoil acidification under clover.