// multi-utility computation suite · offline · instant · precise
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sci.soil-nitrogen-mineralisation Calculator
Calculates soil nitrogen mineralisation rate from organic matter content, temperature, and moisture using first-order kinetics: N_min = k × SOM × f(T) × f(θ). Temperate arable soil mineralises 40–100 kg N/ha/year — this represents a significant natural N supply that should be credited against fertiliser requirements.
Inputs
Som Pct
Reference formula or conversion factor shown for context.
T Soil C
Thermal state of the substance. Check whether the formula needs Celsius, Fahrenheit, or Kelvin (K = °C + 273.15).
Moisture Content Pct
Reference formula or conversion factor shown for context.
Results
estimated N mineralisation (kg/ha/yr)
The value at the specified point or condition.
organic N pool estimate (kg/ha)
The value at the specified point or condition.
temperature rate factor k_T
A dimensionless multiplier applied in the calculation.
moisture factor
A dimensionless multiplier applied in the calculation.
rule of thumb
A widely used practical approximation or heuristic for this field — useful for quick estimates but not a substitute for rigorous calculation.
Q10 = 2
Reference formula or conversion factor shown for context.