Irrigation is an important component of agricultural production in many areas of world and the USA. However, irrigation is currently facing several challenges. For example, the competition for water resources is becoming more intense, limiting water available for irrigation. At the same time, water and environmental regulations are becoming more restricting to traditional irrigation. Therefore, there is a need for traditional irrigation to be replaced by precision irrigation technology to meet these new challenges. This presentation will focus on precision on-farm irrigation technology, including sensor-based irrigation and site-specific irrigation technology.