How does using compost in a tilled flower bed help maintain soil quality?

Micro-organisms in the soil break down (or decompose) the organic matter and convert it to a useful product known as compost. This compost is rich in nutrients and is highly useful as it adds these nutrients to the soil and increases the soil fertility. High fertility soil indicates good soil quality and hence, better growth of plant.

Thus, compost helps in enhancing the growth of the plant.

Hope this clears your doubt.
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