Funding for this research was provided by:
Bundesanstalt für Landwirtschaft und Ernährung (FKZ: 2813IL03)
Ministry of Agriculture and Rural Development (Grants 837-0079-10, 837-0162-14)
Received: 5 December 2019
Accepted: 26 August 2020
First Online: 10 September 2020
Ethics approval and consent to participate
: Not applicable.
: All authors agreed to publish this manuscript.
: The authors declare that they have no competing interests.