Nitrogen use efficiency for agrifood production
Measurement answer
What this metric measures
Ratio of total nitrogen inputs to total nitrogen outputs for producing a crop, animal product, or agrifood product.
Specification
Metric specification
- Result format
- Single value
- Unit
- ratio — source-defined reporting unit
- Reporting basis
- Reporting period; timing basis is not specified in the extracted evidence.
- Aggregation
- Ratio of total nitrogen inputs to total nitrogen outputs for the covered crop, animal-product, or agrifood product.
- Pillar
- Environmental
- Topic
- Nutrient management
- Controlled domain
- Pollution
- Entity type
- Metric
Reporting boundary
Production of covered crops, animal products, or agrifood products; geographic, value-chain and production-system boundaries are not specified in the extracted evidence.
Verified source occurrences
Framework coverage
This is one canonical metric. The bindings below show every verified framework occurrence without creating duplicate metric pages. Edition, disclosure, role, and relationship remain source-specific.
- Adopting DisclosureSource evidence
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Requirement
- Not Specified
- Relationship
- Defines Disclosure
- Mapping outcome
- Direct Evidence
- Source locator
- Page 76, Section 3.3, Table 12
- Adopting DisclosureFA.A2.1
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Version 1.0, June 2024
- Requirement
- Recommended
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- Page 76, Section 3.3, Table 12
Value structure
Dimensions and units
- Unit
- ratio — source-defined reporting unit
- Reporting basis
- Reporting period; timing basis is not specified in the extracted evidence.
Unit meaning: Values use ratio under the disclosed TNFD sector-guidance method, reporting period and boundary.
Published dimensions
- Product type: crop, animal product, or agrifood product
- Nitrogen input category
- Nitrogen output category
Calculation method
Formula information
- Status
- Specified
- Formula type
- Ratio
Formula
N_inputs / N_outputsApply the source-defined TNFD sector-guidance method within the stated reporting boundary. The source specifies a standalone ratio applicable to crop, animal-product and agrifood-product production. It is not merged with the crop-only metric because this specification has a broader covered-product population and therefore a different reporting boundary.
Variables
| Symbol | Variable | Definition | Unit |
|---|---|---|---|
N_inputs | Total nitrogen inputs | Total nitrogen inputs used in production of the covered crop, animal product, or agrifood product. | nitrogen mass |
N_outputs | Total nitrogen outputs | Total nitrogen outputs associated with production of the covered crop, animal product, or agrifood product. | nitrogen mass |
Verified sources
Evidence and status sources
Sustopedia checked each record-specific claim directly against primary publisher material. Labels distinguish current measurement authority from future compatibility and corroborative, legal, edition, or method status context. Corroborative evidence can support a stated limitation but cannot establish the core measurement by itself.
Measurement evidence
- Measurement evidenceChecked 30 August 2026
TNFD additional sector guidance collection
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Locator
- Page 76, Section 3.3, Table 12
Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Nitrogen use efficiency for agrifood production”.
Open official source
Use with context
Interpretation boundaries
Method disclosures required
Source-edition basis: TNFD sector guidance, Final English sector guidance collection through August 2026 (17 documents).
- Define total nitrogen inputs included in the numerator.
- Define total nitrogen outputs included in the denominator.
- Identify whether the reported result covers crops, animal products, agrifood products, or a combination.
- Disclose the reporting boundary and any aggregation approach across product types, sites, or production systems.
Record-specific limitations
- The extracted specification does not define the included nitrogen input and output categories.
- The extracted specification does not state a geographic, organizational, value-chain, or production-system boundary.
- The extracted specification does not state whether results are calculated and reported separately by product type.
Interpret this metric with the stated reporting boundary, period convention, value shape, and unit. Results prepared with different boundaries or conventions may not be directly comparable.
Measurement evidence supports the core record-specific claims described above. Corroborative evidence can support limitations, while compatibility and status sources provide their separately labelled context. None of these cards by itself determines an organisation's legal applicability, filing readiness, assurance status, or compliance conclusion.