faux charbon nu de l'orge

OBS: faux charbon nu : Terme en usage à la Commission canadienne des grains.

OBS: The disease is not apparent until heading, at which time, smutted heads emerge slightly earlier than healthy heads. At first, each smutted head is covered by a delicate, paperlike, grayish membrane. These membranes break shortly after the smutted heads have emerged and expose a dark brown to black, powdery mass of spores. This spores are easily dislodged, leaving only the bare rachis.
OBS: Term used at the Canadian Grain Commission.