ASSESSMENT BY LABORATORY SIMULATION OF APPROACHES TO AMELIORATION OF PEAT ACIDIFICATION

The effects of different liming materials (CaCO3, Ca(OH)2, CaHPO4, and dolomite) on soil and drainage-water chemistry have been investigated for upland acidic peats by using a soil-core-simulation experiment. Intact cores from three depths (0-30, 0-60, and 0-90 mm) were subjected to ten years of simulated rainfall. Drainage water was periodically analysed for Ca2+, Mg2+, Na+, K+ NH4+, TOC, Cl-, SO42-, NO3-, PO43-, and pH, and at the end of the experiment the cores were destructively sampled and analysed Temporal changes in soil and drainage-water chemistry are used to evaluate the advantages and disadvantages of using different liming materials for the amelioration of soil and drainage-water chemistry.