02 Jan 2020 --- The Agricultural Nutrient Assistant (ANA) from Spacenus is designed to support farmers in fertilizing plants according to their needs. It helps prevent crop failures by using a smartphone to detect a plant's nutrient deficiency at an early stage. Minerals company K+S and Spacenus, a German start-up company based in Darmstadt, have agreed to work together in developing this digital technology in the area of precision farming.