BARLEY
YELLOW DWARF
Description: This virus
disease is transmitted by aphids coming up from the south. Plants infected in
the fall are stunted and leaf symptoms appear yellow to reddish or even purple.
Plants infected in the spring are usually not stunted, but the upper leaves turn
yellow with purple to red leaf margins. Affected leaves may loose their flexuous
appearance and become erect with sharp pointed tips.
Location: Barley
yellow dwarf occurs statewide.
Time of attack:
Infections in the fall are most serious on early planted wheat. Spring infections
are more common, but yield losses are proportional to the percentage of plants
affected in the field.
Management:
· Delay planting until after the Hessian Fly safe date.
Corn,
Soybean, Wheat, and Alfalfa Field GuideBulletin 827