Liming process where agricultural lime is added to acidic soil to raise the pH to a level conducive to the growth of acid intolerant crops. In strict chemical terms, the liming material is calcium oxide. But for agricultural purposes, it is the material containing carbonates, oxides and/or hydroxides of calcium and/or magnesium used to neutralise soil acidity. The amount to be applied to raise the desired level of pH is known as the lime requirement. In Bangladesh, liming is not a usual practice. Liming is done in tea soils when the pH becomes too low. [SM Imamul Huq]