Crop coefficients for custom plants can be viewed and adjusted through the ET menu. A crop coefficient is the plant specific factor of ET observed for the crop studied over that for the well-measured reference crop under the same conditions. WeatherTRAK controllers provide the flexibility to set custom crop coefficients. This can be useful where specialty plants or native plants have unique watering requirements.

1.  Press the ET button.

2.  Press the à button until the Custom Kc Plant A screen displays (ET03). To adjust for Plant B, press the à button again.

3.  Use the + or – button to adjust the values.