High C:N; N supply; energy. Nitrogen supply is required for microbial growth to synthesize nutrients such as amino acids and proteins.
For a high C:N ratio, the amount of nitrogen supply is considerably small compared with the amount of carbon. As a result, a low amount of nutrients is released during decomposition.
In the given question, the organic matter with a __high C:N___ ratio results in a low net release of nutrients during decomposition. This is because microbial growth is more limited by __N supply____ than it is by __energy.
Carbon dioxide (CO2), energy, water, plant nutrients, and resynthesized organic carbon molecules are all released during the breakdown process. The breakdown of dead material and changed organic matter results in the production of humus, a more complex organic substance (Juma, 1998).
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