Turning nutrients around with recycled fertiliser made from urine
How can nutrients such as phosphorus and nitrogen, which are removed from the environment through the cultivation and consumption of food, be returned? This question was the focus of the ‘zirkulierBAR’ project, which was supported by the Federal Ministry of Education and Research (BMBF) from 2021 to 2024 as part of the REGION.innovativ funding programme. Following the completion of the three-year project, which was coordinated by the Leibniz Institute of Vegetable and Ornamental Crops (IGZ), the consortium has now summarised its results and findings in a handbook.