Eratos SFM Water Usage Workflow

With knowledge of the tree’s physical dimensions (i.e., circumference, bark depth and sapwood depth) the relevant sized area(s) of sapwood can be calculated (in accordance to measurement points and remaining area). By combining these areas, with the corrected sap velocities derived from measurements at different probe depths, the Sap Flow (kg/h) can be calculated and by averaging a group of successive measurements.

The EratosSFM workflow outputs total hourly tree water usage in litres, daily and cumulative water usage totals are then easily visualised in the Eratos Viewer platform.

For crop management the EratosSFM Water Usage workflow can optionally be used alongside the EratosETo workflow for calculation of evapotranspiration (FAO Penman-Monteith)

The workflow is compatible with all ICT International SFM1x Sap Flow Meters that are connected via LoRaWAN or Cellular to the Eratos dashboard.