California, a key agriculture state in the United States (US), is facing one of the worst droughts in history. The frequency of severe droughts may be increasing due to climate change. Better water efficiency may offset the impact of severe droughts now, and in the future. Improving water efficiency in agriculture, a sector that accounts for 70% water usage, is a priority. Although some farmers have adopted existing agricultural water conservation practices, the majority of farmers have not adopted practices described here. Understanding the barriers to adoption is important to increase adaptation of conservation practices by more farmers.