Quantifying and predicting soil buffering capacity in the African context: a multidimensional titration-based framework using chemical signatures and MIR spectroscopy
Achraf El Allali
Soil acidity is a major constraint to agricultural productivity across sub-Saharan Africa, where highly weathered soils exhibit strong spatial heterogeneity in chemical reactivity. While soil pH identifies acidity status, it does not indicate how a soil will respond to corrective liming how strongly it resists pH change or how much amendment it ultimately requires. Soil buffering capacity fills this gap, yet current practice typically reduces this multidimensional behavior to a single metric tha