Q:

Why is volcanic soil so fertile?

A:

Quick Answer

Volcanic soils are fertile due to their non-crystalline mineral content that reacts favorably with growing organic matter. They are powdery in consistency and retain a high amount of water which is beneficial for plant growth.

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Full Answer

Volcanic soils are also called andisols. They are the result of accumulated volcanic ash following an eruption. These soils bond well with organic materials, and may form a nutrient-rich layer that facilitates the growth of plants on the surface. The minerals in the soil form a chemical reaction when exposed to the atmosphere, allowing them to be utilized by plants as nutrients. Without proper management, physical weathering may strip the soils of their fertile layer.

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