Root Pathogens Occurring on Pea (Pisum sativum) and Faba Bean (Vicia faba) in Germany

摘要

An extensive survey was undertaken in ten German States in three consecutive years (2016-2018) in order to determine the incidence of root rot on pea (Pisum sativum) and faba bean (Vicia faba) and identify pathogens involved. In total, 185 pea and faba bean fields were sampled (102 conventional and 83 organically managed) within the demonstration network on peas and beans in the framework of the German Protein Crop Strategy. A total of 5167 Fusarium and 1438 Didymella isolates were recovered representing 14 different Fusarium and 4 Didymella species. Didymella pinodella was the only pathogen strongly influenced by the management systems and was found predominantly in organic fields on both crops. Preliminary results further indicate increasing importance and significance of F. redolens and D. pinodella for grain legume production in Germany. However, their role and direct pathogenicity need to be further investigated.