Lime performs several important functions:
- Corrects soil acidity
- Furnishes important plant nutrients like calcium
and magnesium
- Reduces the solubility and toxicity of certain
elements in the soil such as aluminum,
manganese, and iron. This toxicity could reduce
plant growth under acidic conditions.
- It promotes the availability of major plant
nutrients. Calcium acts as a regulator and aids in
bringing about the desirable range of many plant
nutrients. Some elements which lime aids in
regulating are zinc, copper, and especially
phosphorus.
- It increases bacterial activity and hence induces
favorable soil structure and relationships. Soil
structure is also improved by the addition of
decayed organic matter or compost. The soil
becomes more porous, increasing air circulation
and the ability of the soil to absorb and hold
moisture.