Organic acid concentration thresholds to mobilize phosphorus (P) in dryland soils.

Biogeochemistry · 2026 · PMC12804238 · PMID 41552407

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0.0510

closest p · 1.0× alpha

0.0580

boldest claim

The sentences

a trend toward significancep = 0.051so close (0.05 < p ≤ 0.1)

The specific contrast of treatments within each organic acid (Appendix 3 , Table A3-2, panels A-C) indicated a continuous decrease in PO 4 3− levels at lower concentrations (10 μmol/L–100 μmol/L) compared to the control, with significant differences at 50 μmol/L ( p = < 0.001) for all tested organic acids and at 100 μmol/L for malate ( p = 0.0006) and oxalate ( p = 0.03); citrate showed a trend toward significance ( p = 0.051).

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a trend towards significancep = 0.058so close (0.05 < p ≤ 0.1)

In contrast, a trend towards significance ( p = 0.058) was observed, where organic P levels were higher under plant canopies than in the interspaces (Supplementary Appendix 4 , Figure A4-1).

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