AC Stephen is a six-rowed spring feed barley (Hordeum vulgare L.) cult
ivar developed by the Eastern Canada Barley Breeding Group, Agricultur
e Canada, and is adapted to Eastern Canada. It was selected from an OA
C Kippen/Leger cross. AC Stephen has high yield, good test weight and
is resistant to powdery mildew (Erysiphe graminis DC. ex Merat. f. sp.
hordei Em. Marchal).