Description
Total nutrient=wet*dryFraction*nutrientFraction; availableInventory multiplies by suppliedAvailableFraction.
Blend and nutrient balances require compatible component, material and accounting-period bases. Weighted mass fractions, unassigned carrier and included input/output terms answer different questions. A nominal available fraction does not determine actual biological availability or a suitable field application.
Total nutrient=wet*dryFraction*nutrientFraction; availableInventory multiplies by suppliedAvailableFraction.
When to use this tool
Use Compost Nutrient Available Supplied Factor when checking the stated blend, nutrient or accounting-boundary term.
How to use the tool and how it works
- Enter wetMass, dryFraction, nutrientFraction, suppliedAvailableFraction. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read totalNutrient, availableInventory. Use the output convention below.
Require nonnegative wet mass and dry, nutrient and supplied available fractions in [0,1]. Total nutrient=wet*dryFraction*nutrientFraction; availableInventory multiplies by suppliedAvailableFraction.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. |
| nutrientFraction | Nutrient mass per dry compost mass. Unit: 1. | Required. Finite number; minimum 0; maximum 1. |
| suppliedAvailableFraction | Caller-assumed available share of total nutrient, not a measured recovery. Unit: 1. | Required. Finite number; minimum 0; maximum 1. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| totalNutrient | Total Nutrient | Required. Finite number. |
| availableInventory | Available Inventory | Required. Finite number. |
{
"input": {
"wetMass": 1000,
"dryFraction": 0.5,
"nutrientFraction": 0.02,
"suppliedAvailableFraction": 0.3
},
"output": {
"totalNutrient": 10,
"availableInventory": 3
}
}Limitations and assumptions
- Nutrient fraction is per dry mass; the available fraction is assumed, not predicted, and no application rate is recommended.
- 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 composition, compatibility and full system balances with qualified laboratory/agronomic advice for actual chemical or nutrient management.
References
Similar or alternative tools
- Legume Residue Nitrogen Supplied Factor
Return dryMass*nitrogenFraction and multiply by both process fractions for availableNitrogen.
- Residue Return Nitrogen Basis
Return wet*dryFraction*returnedFraction and multiply by dryNitrogenFraction for returned nitrogen.