Liming is the application (to soil) of calcium- and magnesium-rich materials in various forms, including marl, chalk, limestone, burnt lime or hydrated lime. In acid soils, these materials react as a base and neutralize soil acidity.

Is calcium carbonate a liming material?

CompoundNeutralizing value (%)Calcium magnesium carbonate108.5Calcium oxide178.5Calcium hydroxide135Calcium silicate86

What is liming material and quantity?

An agricultural liming material is defined as a material whose Ca and Mg compounds are capable of neutralizing soil acidity. These materials in- clude quicklime, hydrated lime, limestone (both calcitic and dolomitic), marl, shells, and byproducts such as slag. Limestone is the main liming material used.