The recommended irrigation time seems wrong. What should I check?

Check that the value for the irrigation system application rate is accurate. Each planting starts with a default value of 0.15 inches per hour that the user must modify for the conditions of the actual planting. A calculator tool is provided on the planting setup page to estimate the application rate of drip and sprinkler irrigation systems in units of “inches per hour.”
Check that the previous irrigation date is entered for the planting. CropManage needs the date to estimate crop water use since the previous irrigation.
Check that the estimated canopy cover value in the irrigation table reflects conditions in the field. Adjustments of the canopy cover can be made by changing the crop end date or selecting “advanced settings,” and changing the maximum canopy cover value or the fraction of the crop cycle to reach maximum canopy.
Check that the reference ET value is accurate. Sometimes a reference ET value from spatial Cimis or a specific station is not available or is wrong. CIMIS has quality control measures in place that alerts staff when values are out of range or missing. Staff will update CIMIS reference ET if they identify errors. Selecting “refresh weather data” may reload the correct value. You can also check the average reference ET for the period between the last and next irrigation dates directly on the CIMIS website.