Question

Why is it necessary to aerate nutrient solution in water culture?

Answer 1

Answer:

The roots don't suffocate because they get the air and oxygen they need from air bubbles rising through the nutrient solution, as well as from dissolved oxygen in the water itself. The more air bubbles the better for water culture systems. ... The smaller the air bubbles, the better for aerating the nutrient solutions.

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Answer 2

Aerated solution is necessary for plants to make enough oxygen.

Explanation:

Plant cells are in the need of oxygen and the roots do not have oxygen access unlike green part of plants. But it is necessary for them to absorb oxygen from the solution of nutrients of soil. So, roots that are buried, gets oxygen from the soil pores.

But overwatered roots cannot get oxygen properly and that can make them die. So, it is very important for the roots and the solution to be properly aerated for the survival of the plants and mankind.