Understanding the Nitrogen Cycle

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Nitrogen Cycle

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Process of nitrogen moving through the environment

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Atmospheric Nitrogen

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N2, makes up 78% of Earth's atmosphere

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Nitrogen Fixation

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Conversion of N2 to ammonia (NH3) and nitrates

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Legumes

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Plants with nitrogen-fixing bacteria in root nodules

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Rhizobium

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Bacteria in legumes fixing nitrogen

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Assimilation

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Plants absorbing nitrates from soil

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Ammonification

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Decomposition of organic nitrogen to ammonia

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Nitrification

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Conversion of ammonia to nitrites and nitrates

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Nitrosomonas

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Bacteria converting ammonia to nitrite

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Nitrobacter

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Bacteria converting nitrite to nitrate