First report on <em>Pythium myriotylum</em> as pathogen on duckweed (<em>Lemna minor</em> L.) in hydroponic systems in Germany

Authors

  • Thomas Brand Chamber of Agriculture Lower Saxony, Plant Protection Service, Oldenburg, Germany https://orcid.org/0000-0001-6026-0806
  • Finn Petersen University of Applied Sciences Osnabrück, Faculty of Agricultural Sciences and Landscape Architecture, Osnabrück, Germany https://orcid.org/0000-0002-6301-6507
  • Johannes Demann University of Applied Sciences Osnabrück, Faculty of Agricultural Sciences and Landscape Architecture, Osnabrück, Germany https://orcid.org/0000-0003-3276-5457
  • Alexandra Wichura Chamber of Agriculture Lower Saxony, Plant Protection Office, Hannover, Germany https://orcid.org/0000-0002-2004-7178

DOI:

https://doi.org/10.5073/JfK.2021.09-10.02

Keywords:

Hydroponics, plant disease, discoloration, bleaching, control, water lentils, Lemnaceae

Abstract

Duckweed is a promising resource for future feed and food production as well as wastewater treatment. However, diseases and pests can critically limit the performance of the production systems. Patches of discolored and bleached duckweed (Lemna minor L.) appeared in hydroponic systems and spread rapidly through the crop. Pythium myriotylum was confirmed as the causing pathogen by microbiological and molecular biological analysis. This is the first report of P. myriotylum on duckweed in Germany. The result and possible countermeasures are discussed.

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Published

2021-09-23

Issue

Vol. 73 No. 9-10 (2021)

Section

Original Article

License

Copyright (c) 2021 Thomas Brand, Finn Petersen, Johannes Demann, Alexandra Wichura

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