Abstract Pea necrotic yellow dwarf virus (PNYDV) is a novel nanovirus in Europe, affecting various grain legumes. The impact of PNYDV on nodulation, symbiotic N 2 fixation and yield parameters faba bean ( Vicia L.) was investigated at controlled conditions the greenhouse (2017), on-farm natural infection foci (2018, 2019) small-scale field experiment (2020). In latter, standard variety ‘Fuego’ ...