Farmers typically spray crops with chemicals to preempt outbreaks. However, the overuse of these chemicals is linked to harmful effects on human health, soil and water quality and biodiversity. Worryingly, many pathogens are becoming resistant to existing treatments, and developing new ones is proving to be difficult.Reducing the amount of chemicals used is therefore paramount, and AI may be part of a solution.The Consortium of International Agricultural Research Centers has created a mobile phone app that identifies pests and disease. The app, “Tumaini,” allows users to upload a photo of a suspected pest or disease, which the AI compares with a database of 50,000 images. The app also provides analysis and can recommend treatment programs.