Question

Mention the three horizons of a soil profile.

Answer 1

Three horizons of soil profile are:

1. Horizon A: It is the topmost zone, where organic materials have got incorporated with the mineral matter, nutrients, and water, which are necessary for the growth of plants.
2. Horizon B: It is a transition zone between the ‘horizon A’ and ‘horizon C’, and contains matter derived from below as well as from above. It has some organic matter in it, although the mineral matter is noticeably weathered.
3. Horizon C: It is composed of the loose parent material. This layer is the first stage in the soil formation process and eventually forms the above two layers.