Description
Return soilMass=area*depth*density and nutrientMass=soilMass*fraction.
Soil and plant analytical results depend on sample mass, extraction volume, dilution, blanks and dry-matter basis. Concentration in an extract is distinct from analyte mass per soil mass or an inventory per field area. A unit conversion does not convert between analytical methods or establish nutrient availability.
Return soilMass=area*depth*density and nutrientMass=soilMass*fraction.
When to use this tool
Use Soil Nutrient Area Depth Bulk Density Term when checking the stated benign analytical concentration, inventory or calibration basis.
How to use the tool and how it works
- Enter area, depth, dryBulkDensity, massFraction. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read soilMass, nutrientMass. Use the output convention below.
Require nonnegative area, depth and dry bulk density, with nutrient massFraction in [0,1]. Return soilMass=area*depth*density and nutrientMass=soilMass*fraction.1
Dry bulk density uses dry soil mass per bulk volume, including pore space. The uniform-layer inventory requires that basis rather than particle density; nutrient availability remains a separate question.2
| Input field | Meaning and units | Accepted input |
|---|---|---|
| area | Area | Required. Finite number; minimum 0. |
| depth | Depth | Required. Finite number; minimum 0. |
| dryBulkDensity | Dry soil mass per bulk soil volume; use units compatible with area*depth. | Required. Finite number; minimum 0. |
| massFraction | Nutrient mass/dry soil mass. Unit: 1. | Required. Finite number; minimum 0; maximum 1. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| soilMass | Soil Mass | Required. Finite number. |
| nutrientMass | Nutrient Mass | Required. Finite number. |
{
"input": {
"area": 100,
"depth": 0.2,
"dryBulkDensity": 1200,
"massFraction": 0.001
},
"output": {
"soilMass": 24000,
"nutrientMass": 24
}
}Limitations and assumptions
- Use coherent volume and density units; the uniform-layer inventory is not a plant-available nutrient estimate or application recommendation.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use verified laboratory methods, compatible units and qualified laboratory/agronomic assessment for actual analytical interpretation, chemical handling or field management.
References
-
Calculation and input contract: agrochemistry/soil-nutrient-area-depth-bulk-density-term — tool.io
-
Soil Quality Indicators: Bulk Density — USDA Natural Resources Conservation Service
Similar or alternative tools
- Soil Test Extractant Dry Mass Factor
Return concentration*extractVolume/(wetSample*(1-moisture)).
- Soil Extract Mass Volume Factor
Return concentration*extractVolume/sampleMass.