Thresholds of target phosphorus fertility classes in European fertilizer recommendations in relation to critical soil test phosphorus values derived from the analysis of 55 European long-term field experiments

Kristin Steinfurth, Gunnar Börjesson, Pascal Denoroy, Bettina Eichler‐Löbermann, Wolfgang Gans, Johannes Heyn, Juliane Hirte, B. Huyghebaert, Claire Jouany, Koch Dierk, Ines Merbach, Markus Mokry, Alain Mollier, Christian Morel, Kerstin Panten, Edgar Peiter, P. R. Poulton, Thomas Reitz, Gitte Holton Rubæk, Heide Spiegel, Michael van Laak, Sabine von Tucher, Uwe Buczko