At a meeting today I was reminded that there are a number of smartphone apps designed to help farmers with irrigation planning available from the University of Florida IFAS, USA NIFA and the University of Georgia. While these started in the Southeast, some of them are now expanding to other parts of the country based on gridded weather data.  Apps are available for strawberries, avocados, cotton, citrus, turf, and vegetables.  Blueberry and soybean apps will be available soon.  You can get them at https://smartirrigationapps.org/.