Question

Why is volcanic soil (andisol) fertile?

Answer 1

The reason why volcanic soil is very fertile is because it has rich in minerals from volcanic deposits. Andisols are framed from volcanic fiery debris. Volcanic materials separate and climate to shape the absolute most fruitful soils on Earth.

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Answer 2

Volcanic ash contains very high concentrations of minerals, and when mixed with soils, nutrients such as phosphates, nitrates, potassium and calcium (among others) which are needed for the healthy growth of plants. ... Volcanic soil is fertile because it is new, having just been erupted out into the upper world.

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