Description
Return wet*dryFraction*returnedFraction and multiply by dryNitrogenFraction for returned nitrogen.
Agroecological material and density summaries depend on dry/wet mass, seed-component purity, nutrient transformations and sole-crop reference densities. An arithmetic contribution evaluates supplied assumptions without predicting emergence, nutrient availability or a whole-system ecological outcome.
Return wet*dryFraction*returnedFraction and multiply by dryNitrogenFraction for returned nitrogen.
When to use this tool
Use Residue Return Nitrogen Basis when checking the stated residue, seed, nutrient or reference-density basis.
How to use the tool and how it works
- Enter wetMass, dryFraction, dryNitrogenFraction, returnedFraction. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read returnedDryMass, returnedNitrogen. Use the output convention below.
Require nonnegative wet residue mass and dry, dry-nitrogen and returned fractions in [0,1]. Return wet*dryFraction*returnedFraction and multiply by dryNitrogenFraction for returned nitrogen.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| wetMass | Wet Mass | Required. Finite number; minimum 0. |
| dryFraction | Dry Fraction Unit: 1. | Required. Finite number; minimum 0; maximum 1. |
| dryNitrogenFraction | Dry Nitrogen Fraction Unit: 1. | Required. Finite number; minimum 0; maximum 1. |
| returnedFraction | Returned Fraction Unit: 1. | Required. Finite number; minimum 0; maximum 1. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| returnedDryMass | Returned Dry Mass | Required. Finite number. |
| returnedNitrogen | Returned Nitrogen | Required. Finite number. |
{
"input": {
"wetMass": 100,
"dryFraction": 0.5,
"dryNitrogenFraction": 0.02,
"returnedFraction": 0.8
},
"output": {
"returnedDryMass": 40,
"returnedNitrogen": 0.8
}
}Limitations and assumptions
- Nitrogen concentration uses dry residue mass; returned nitrogen is not automatically mineralized or crop-available.
- 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 representative field/laboratory measurements and a complete suitable agroecological model for management decisions and uncertainty.
References
Similar or alternative tools
- Legume Residue Nitrogen Supplied Factor
Return dryMass*nitrogenFraction and multiply by both process fractions for availableNitrogen.
- Farm Nutrient Recycled Input Share
Return total and recycled/total.