Nature's nutrient cycle

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Prod-ID: INF-115-en
Published 30 Sep 2019 Last modified 18 Oct 2019
Soil plays a crucial role in nature’s cycles, including the nutrient cycle, which involves how much soil organicmatter — i.e. carbon, nitrogen and phosphorus — is taken up and stored in soil. Organic compounds, suchas leaves and root tips, are broken down to simpler compounds by organisms living in soil before they canbe used by plants. Some soil bacteria convert atmospheric nitrogen into mineral nitrogen, which is essentialfor plant growth. Fertilisers introduce nitrogen and phosphates to induce plant growth but not all amountsare taken up by plants. The excess can enter rivers and lakes and affect life in these water ecosystems.

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