ADLib Glossary (N)

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Nitrogen Fixing Crops

Nitrogen may be added to the soil by a natural process known as nitrogen fixation. Atmospheric nitrogen is 'fixed' into the soil by the action of bacteria in the nodules of leguminous plants such as clover, lucerne, peas and beans. Most leguminous plants can obtain all the nitrogen they require from this method. When the plant dies or is harvested the root residue adds nitrogen to the soil.


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