Evaluating irrigation sprinkler operational efficiency with catch cups is a labor-intensive process that provides data regarding the output of the irrigation system using mechanical spray and rotary sprinklers. Catch cups are a proxy for the availablemoisture in the soil due to many factors such as: soil saturation, soil type, run-off, etc. While soil moisture sensing (SMS) can automate the measurement process, much needs to be learned about the limits and benefits of using soil moisture to measureirrigation sprinkler operational efficiency. This presentation will cover examples of using soil moisture to measure sprinkler operational efficiency; limits in making before and after soil moisture measurements; advantages in using soil moisture sensingand what we still need to learn.
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