... years Element Theoretic balance in the whole soil (Table VI) Probable range (1) Mean (2) Mineralisation in OL, OF, OH, and transfer into mineral horizons (Tab V) (3) Theoretical balance in mineral ... change in the whole soil = change in humus layers + change in mineral horizons) This theoretical balance was positive to varying degrees for Ca, Mg and K For K, the actual balance (soil analysis) ... or as a decrease in Acid Neutralization Capacity (ANC), that is the difference between the sum of all the cations in soil (Ca, Mg, K, Al, Fe, Mn in minerals, in an exchangeable form or in the humus) ...