Core Project 4 aims at converting the collected data into robotic actions in the fields, exploiting digital avatars. Precise robotic weeding, for example, seeks to intervene in a minimally invasive way, reducing the amount of inputs such as herbicides. This project develops autonomous field aerial and ground robots that detect and identify individual plants, weed mapping the field to treat individual plants with the most appropriate intervention. The robots precisely apply nitrogen fertilizer enabled by digital avatars that predict the plant nutrient demand and probable losses in the field.