Krauss, Maike
Berner, Alfred
Perrochet, Frédéric
Frei, Robert
Niggli, Urs
Mäder, Paul
Funding for this research was provided by:
Bundesamt für Landwirtschaft
Stiftung zur Pflege von Mensch, Mitwelt und Erde
Stiftung Edith Maryon
Software AG - Stiftung
Article History
Received: 13 November 2019
Accepted: 25 February 2020
First Online: 10 March 2020
Competing interests
: The authors declare no competing interests.