Geoderma · 2022
The effect of soil organic matter on long-term availability of phosphorus in soil: Evaluation in a biological P mining experiment
Hawkins, J., Vermeiren, C., Blackwell, M., Darch, T., Granger, S., Dunham, S., Hernandez-Allica, J., Smolders, E., McGrath, S.
Abstract
No abstract in the library.
Findings
What changed what, as the paper reports it. Grouped by the measured property.
critical cumulative P uptake as a fraction of Pox (CCP/Pox)
↑ 22
- increase
with SOC/(Fe+Al)significant · 0–10 cm · 448-day mining assay; CCP at onset of P deficiency · 25 UK agricultural soils · 24 soils, excluding calcareous Plumpton. Positive log10-ratio association overall (Fig6B R²=.32,p<.01), especially DPS<.30 (R²=.48,p<.01); high-DPS subgroup n.s.; not a manipulated SOC treatment.
Source · p. 16 “For soils with a relatively low P saturation (DPS \< 0.30), both the CCP and TCP (as % of Pox) most significantly increased with increasing SOC/(Fe+Al) ratio of the soil (Figure 6B; p \< 0.01)”
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