IMIS A digital twin for vegetable irrigation in the UK
With Cranfield University · PDM Produce (UK) Ltd · University of Córdoba · RSPAWIR programme
The challenge
Lettuce, celery and potato in Shropshire, with over-abstracted catchments, restrictive abstraction licences and drought summers in 2022, 2023 and 2025. The farm had to irrigate less without losing quality or yield.
What we built
A three-tier system: a sensor network (weather stations, LI-COR 710, root-zone soil moisture) connected through IoT agents; a Node.js core that integrates the AquaCrop model with real-time data and forecasts; and a local-first mobile app to manage plots, compare irrigation scenarios and calibrate the model with crop photos. Integrated with the farm's RainDancer and Briggs irrigation systems.
Results
- −32% water use at the same yield
- +10% productivity per unit of water applied
- £300,000 estimated annual savings
- −10% pumping energy