Applications: identify under-irrigation, identify over-irrigation and probe placement

Actual evapotranspiration [mm]

  • How much water is used to produce crops each week? Includes crop, cover crop, and weed transpiration, as well as evaporation from the soil surface.
  • Evapotranspiration (ET) is the sum of the amount of water that is evaporated from the soil (E) and the amount of water that is lost through transpiration by the crop, cover crop, and/or weeds(T). Where non‐consumed water can be recaptured for downstream use or replenishes the groundwater, water consumed by evapotranspiration cannot. It represents the actual amount of water lost in the crop production process and is expressed in mm/week. Where actual evapotranspiration (ETact) is the real crop water use on a certain day, the potential evapotranspiration (ETpot) represents the amount of water that could be evaporated and transpired under actual meteorological conditions and ample water supply. 
  • Hoeveel water word weekliks verbruik vir gewasproduksie? Dit sluit in transpirasie deur gewasse, dekgewasse en onkruid, asook verdamping vanuit die grondoppervlak.
  • You can find more information on using the Actual Evapotranspiration in our tutorial by clicking HERE

Evapotranspiration deficit [mm]

  • The difference between ETact and ETpot reflects the crop shortfall in what it can potentially achieve, this is called the absolute evapotranspiration deficit (ETdef). A high deficit means plants are experiencing water and/or other stresses.
  • Die verskil tussen optimale en werklike totale verdamping van 'n oppervlak. Groot tekorte wys die plante word te min besproei of beleef ander strestoestande.
  • You can find more information on using the Evapotranspiration Deficit in our tutorial by clicking HERE

Biomass Water Use Efficiency [kg/m3]

  • How efficiently are plants using water? This shows how much biomass is produced per unit of water consumed by evapotranspiration.
  • Hoe doeltreffend verbruik plante water? Dit wys hoeveel biomassa geproduseer word per eenheid water verbruik.
  • You can find more information on using the Biomass Water Use Efficiency in our tutorial by clicking HERE

Want to read more about the other interesting groups? Choose:  GROWTH  -  MINERALS