Workspaces›Six-crop study
Workspace · Greenhouse · planning study
Six-crop cultivation planning — a published dataset
A 10,000 m² glasshouse plans six cut-flower crops over thirteen 4-week periods under ground and labor limits. The plan engine reproduces the published optimum and all five published scenarios — see Plan.
Site
Validation — model vs published results
Each scenario re-solved from the crop-period ledger. Five of six match to the euro; one differs 0.03% from rounding in the source's hand-edited coefficients.
| Scenario | This model | Published | Match |
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Why this case is here
The validation base for the planning engine
What it shows
Every coefficient of the original model lives in one ledger file; each scenario is a data override, not a new model. The same engine drives the planting plans in the other workspaces.
What the 2026 version changes
The study's fixed price averages become live market data, the energy surcharge becomes the facility energy model, and yields come from operating data — ledger column swaps, no model rewrite.
Source: Kromhout, R.M. (2007), Cultivation planning for flower production: a model in linear programming, TU Delft MSc thesis. Margins are net €/m² per harvest period from 2004–2006 FloraHolland price averages, as published. Re-solved here with HiGHS from a crop-period ledger.