PI-Advisor review

Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

PI-Advisor is an open-source decision-support tool for precision irrigation, aimed at farmers and advisers who need field-level water recommendations rather than equipment control. It calculates daily crop water requirements for soil–crop zones using the FAO-56 dual crop coefficient method, then produces interactive prescription maps on a 10 m grid. Recommendations cover pressurised drip or sprinkler systems and surface furrow or flood systems.

Its workflow combines daily weather and in-situ station records with a 7-day weather forecast. The tool tracks depletion in the root zone and evaporation layer, and triggers recommendations when depletion exceeds readily available water. Farmers can accept, skip, or edit recommendations, after which the water balance is recalculated. Google Earth Engine and FAO WaPOR are listed integrations. Prescription exports are available as Excel, shapefile, or GeoTIFF, which supports passing map outputs into other workflows. These functions make PI-Advisor a fit for users focused on crop-water assessment and spatial prescriptions across supported irrigation scenarios.

Deployment can be cloud-based or self-hosted, and the software is open source. The live app is described as view-only: users can browse a live project, but project creation and saving decisions are switched off. The repository provides installation instructions for running it locally. PI-Advisor is therefore better suited to evaluation or locally run decision support than to users seeking an immediately writable live workspace. It does not control irrigation equipment, so farms looking for remote operation should consider a tool with control capabilities instead.

PI-Advisor pros and cons

• Where it wins
  • Creates interactive 10 m irrigation prescription maps for soil–crop zones
  • Recalculates the water balance when recommendations are accepted, skipped, or edited
  • Exports prescriptions as Excel, shapefile, or GeoTIFF
• Where it doesn't
  • Does not provide soil-moisture control or remote equipment control
  • The live app is view-only, with project creation and saved decisions switched off
  • Requires crop and soil zone shapefiles as inputs

PI-Advisor fact sheet, pricing and score →

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Last updated 15 Nov 2026 · How we research and update