Carbon to Nitrogen Ratio

The ratio of the mass of carbon to the mass of nitrogen in a substrate. It is often expressed as a single number representing the carbon content. A balanced carbon – nitrogen ratio is relevant for composting and anaerobic digestion. If the digestion process is hampered by a lack of carbon (low C/N ration) organic material (e.g. household waste) can be added. To prevent a lack of nitrogen urine can be added.