Binoy Kumar Medhi
C:N Ratio: The carbon-to-nitrogen (C:N) ratio of soil organic matter typically ranges from 10:1 to 12:1 in many agricultural soils. This means that for every 10–12 parts of carbon, there is approximately 1 part of nitrogen. Available Nitrogen: Not all nitrogen in organic matter is readily available to plants. Usually, only a small fraction (e.g., 1–5%) of the total organic nitrogen becomes available through mineralization in a growing season.
Yes, it is possible to estimate the amount of available nitrogen (N) in soil based on the organic carbon (OC) content. This relationship relies on the fact that soil organic matter (SOM), which contains organic carbon, also serves as a reservoir for nitrogen. A commonly used approximation is based on the C:N ratio in soil organic matter.
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