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The importance of nitrogen and phosphorus in ecosystems
An overview of the nitrogen and phosphorus cycles in the biosphere.
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chlorosis
A young corn plant with chlorosis (left) contrasted with a healthy young corn plant...
Royalbroil
ammonium nitrate
Structure of the chemical compound ammonium nitrate, from which fertilizer is produced.
Encyclopædia Britannica, Inc.
manure
Manure, a mixture of animal excrement and straw, piled in a field in France.
© laurine45/stock.adobe.com
nitrogen fixation
Close-up view of nitrogen nodules on fava bean (Vicia faba) roots. Fava...
© NNehring—iStock/Getty Images
compost
Farmer managing a compost pile in France. Compost adds rich organic matter and beneficial...
© Stéphane Bidouze/stock.adobe.com
fertilizer application
Aerial view of a tractor towing a fertilizer applicator. The applicator is spraying...
© BanksPhotos—E+/Getty Images
fertilizer products and their uses
Figure 1: Major interactions of fertilizer products and their uses.
Encyclopædia Britannica, Inc.
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