Soil Testing and Fetilizer Use agriculture information

Lime Reaction and Reaction of Calcite in Acid Soils

On Jan 27, 2018

Lime Reactions:

Biological Weathering of Rocks

Components of Farming Systems

Important Events in Early History of Agriculture

CaCO3 + H2O + CO2 à Ca ( HCO3)2
Ca ( HCO3)2 à Ca2+ + HCO3
H + HCO3 à H2CO3
H2CO3 à H2O + CO2

Reaction of Calcite in Acid Soils:

Clay Al3+                                                   Ca2+
         Ca2+                                                  Ca2+
         Mg2+ + 3 CaCO3 + 3H2O à Clay Ca2+ + 2Al ( OH)3
         Al3+                                                   Ca2+ + 2CO2
                                                                     Mg2+

Lime Reaction and Reaction of Calcite in Acid Soils