On behalf of the German Hessian Ministry for the Environment, Climate Protection, Agriculture and Consumer Protection, the recovered phosphorus materials available on the market in 2021 were examined in plant tests. The TerraNova recovered phosphorus emerged as the test winner. We are pleased about the confirmation of the excellent fertilisation performance, which was already determined in 2019 by a major fertiliser manufacturer. For the full test report (in german language) follow this link.