WAC 16-354-070. Hop planting stock field standards

(1) The unit of certification is the entire registered mother block. (2) Each entire registered mother block may have no more than the following percent of affected plants: Tolerance Downy mildew 1% Visible nematode damage 1% Verticillium wilt 0 Ilar viruses 0 Arabis mosaic viruses 0 Hop stunt viroid 0 Tolerance Downy mildew 1% Visible nematode damage 1% Verticillium wilt 0 Ilar viruses 0 Arabis mosaic viruses 0 Hop stunt viroid 0