Agriculture Soil Bulk Density Calculator

Actual oven-dry fine-earth core density corrected for excluded coarse-fragment volume, pooled unequal cores distinct from single mass/volume. Caller independently establishes units, regime, calibration and applicability; this does not establish design-code compliance, authenticity, operational safety, treatment efficacy or a validated forecast.

Description

Fine-earth bulk density excludes measured coarse-fragment volume from the core.

Fine-earth bulk density excludes measured coarse-fragment volume from the core.^[1]

Pooled mass over corrected volume differs from averaging individual density values. Use Agriculture Soil Bulk Density Calculator to evaluate the supplied inputs under the model explained below.

When to use Agriculture Soil Bulk Density Calculator

Use Agriculture Soil Bulk Density Calculator to evaluate the supplied inputs under the model explained below. Establish the units, measurement scope and model assumptions before entering values.

How to use Agriculture Soil Bulk Density Calculator and understand its results

Establish the units, measurement scope and model assumptions before entering values.
Enter Oven dry fine soil mass kg, Intact core volumes m3, Excluded coarse fragment volumes m3 using the field table and validation rules below, then run the tool.
Read Fine earth bulk densities kg m3, Pooled fine earth bulk density kg m3; interpret the units, signs, ordering and unknown-value placeholders described below.
Correct reported input errors and rerun. Apply successful results according to their specific meanings and check the assumptions before using them in a decision.

Input field	Meaning	Value type	Requirement
ovenDryFineSoilMassKg	Oven dry fine soil mass kg	array of number	Required; constraints below
intactCoreVolumesM3	Intact core volumes m3	array of number	Required; constraints below
excludedCoarseFragmentVolumesM3	Excluded coarse fragment volumes m3	array of number	Required; constraints below

Enter nonempty aligned nonnegative oven-dry fine-soil masses in kg, positive intact-core volumes and nonnegative excluded coarse volumes in m³. Each corrected fine volume=core−coarse must be positive. Return per-core mass/correctedVolume and pooled total mass/total correctedVolume in kg/m³. No volume measurement, moisture correction or compaction grade is inferred.

fineBulkDensity[i]=dryFineMass[i]/(coreVolume[i]−coarseVolume[i]); pooled=Σmass/ΣcorrectedVolume

Use the field order, units and branch conditions described above.

Output field	Meaning	Value type
fineEarthBulkDensitiesKgM3	Fine earth bulk densities kg m3	array of number
pooledFineEarthBulkDensityKgM3	Pooled fine earth bulk density kg m3	number

json

{
  "input": {
    "ovenDryFineSoilMassKg": [
      1,
      2
    ],
    "intactCoreVolumesM3": [
      0.001,
      0.002
    ],
    "excludedCoarseFragmentVolumesM3": [
      0,
      0.001
    ]
  },
  "output": {
    "fineEarthBulkDensitiesKgM3": [
      1000,
      2000
    ],
    "pooledFineEarthBulkDensityKgM3": 1500
  }
}

Limitations and assumptions

Pooled mass over corrected volume differs from averaging individual density values. Apply the exact scope and assumptions explained above.

All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse arrays fail validation. Domain-specific bounds, alignments and supported tokens are explained above; extremely large inputs or outputs can also be rejected. Input errors differ from successful false results, empty match lists and unknown-evidence placeholders.

Alternative or Complementary methods

Use Agriculture Soil Texture Silt Percentage Calculator for a related task: Silt can be estimated by subtracting included clay from a measured fine fraction.

Use Agriculture Soil Porosity Calculator for a related task: Soil porosity compares bulk density with matched particle density.

References

Agriculture Soil Bulk Density Calculator — tool.io

Similar or alternative tools

Agriculture Soil Texture Silt Percentage Calculator
Silt can be estimated by subtracting included clay from a measured fine fraction.
Agriculture Soil Porosity Calculator
Soil porosity compares bulk density with matched particle density.