Evapotranspiration (ET) is a measure of the amount of moisture lost to the atmosphere through evaporation from the ground and transpiration from plants. ET values can be used for determining irrigation requirements by estimating how much moisture is being lost.

Weather Innovations has been working to develop a number of tools that use ET data to help growers with irrigation decision making. Currently, two of these tools are available here:

• Our ETo maps are designed to give producers a daily snapshot of the levels of evapotranspiration in their region.
• The WIN irrigation scheduler, developed in partnership with OMAFRA, allows growers to input crop and field specific factors to obtain water deficit values for their immediate vicinity.

Both the ET maps and the irrigation scheduler are publicly accessible. Visit the links to learn more and to use these tools.