Table 30. Correcting Soil pH - Amount of Lime Required to Increase pH.
(ECC) Effective Calcium Carbonate
Equivalent by soil test"20%"Lime (ECC)
(lbs./A)"20%"5,000+
4792
3,000
3920
2,000
3049
1,000
1089
500
305
Types of Liming Materials
Material"20%" Chemical Composition"20%" Neutralizing Equivalent*"20%" Crushed Limestone
calcium carbonate (CaCO3)
100
Dolomite
calcium-magnesium carbonate (CaCO3 - MgCO3)
108
Bruned or Lump Lime
calcium oxide (CaO)
150-175
Hydrated or Slake Lime
calcium hydroxide (Ca(OH)2)
120-135
Slags
calcium silicate (CaSiO3)
60-90
*Neutralizing equivalent based on calcium being 100 percent.
Source: Adapted from KCES. Horticulturfe Tips by Charles Marr and Dave Whitney.
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