Source
https://www.ecan.govt.nz/document/download?uri=3033474 — original source (opens in a new tab; the file is not redistributed)
Context: ni · Feeds D02 + D03 (irrigation efficiency + season)
Summary
Environment Canterbury’s IRRICALC guidance, retrieved for two NZ criteria the model needs when turning crop water demand into actual water drawn and pumping energy: the application efficiency and the standard irrigation season.
Key claims
- claim: "NZ IRRIGATION CRITERIA. Reasonable irrigation demand is computed with FAO-56 crop factors at an application efficiency of 80% (i.e. water drawn = crop demand / 0.8), over the standard NZ irrigation season 1 September to 30 April. [verified against the raw]"
source_location: "Environment Canterbury IRRICALC guidance (2010), section 1 (criteria)."Model use
- The application-efficiency and season criteria in D03 (RT_398): the water actually drawn (and the pump energy in D01) is the applied irrigation divided by ~0.8, over a Sep-Apr season. OT_221
Notes
- Provenance. ECan guidance PDF, authoritative, verified against the raw. Supporting source alongside OT_220.
- Scope. context ni, feeds d02 + d03. Retrieval batch rt_cost_irrigation_2026-07-27.
Connections
Links to
EDT domains (2): D02: Smart Food Systems & Agriculture · D03: Water, Waste & Circular Systems
Sources (1): OT_220
Referenced by
EDT domains (2): D02: Smart Food Systems & Agriculture · D03: Water, Waste & Circular Systems