Management and Epidemiology of
Barley Yellow Dwarf Virus in Small Grains
Barley yellow dwarf is the most widespread virus disease of wheat worldwide. In Virginia, surveys of small grains detected BYDVs in most wheat fields. When a wheat plant is infected with BYDV in the fall, when the plant is young, grain yield is reduced by approximately 30% compared to nearby healthy plants. 

The source of virus inoculum can be local, distant, or both. Aphids acquire the virus by feeding on an infected host plant and then migrating into the cereal crop.
Presentation by Peter Sforza (APS 2001)

BYD Animations

Serology: DAS-ELISA 
Aphid transmission of barley yellow dwarf viruses
Flying aphid presented at CIMMYT (coming soon!)

BYD Decision Support 

Barley Yellow Dwarf Support  A prototype risk index for BYD in England
Barley Yellow Dwarf Forecast Dept. of Agriculture - Western Australia
Aphid Watch New Zealand

Extension pages on BYD

Integrated Disease Management in Small Grains (Virginia Tech)
Kentucky Wheat IPM: Wheat Diseases
Pests of Small Grains UC Pest Management Guide
BYD in Kentucky
Wheat Diseases and Pests: a guide for field identification (CIMMYT)
Small Grains Disease Information Notes (NCSU)

Virus information

ICTV Database: Barley Yellow Dwarf Virus

More BYD Links

BYD Symposium held Sept. 1 - 5, 2002 at CIMMYT, Mexico  Barley Yellow Dwarf Disease: Recent Advances and Future Strategies
Winter Wheat Production Guide Crop Development Center, Canada
National Wheat Growers Association www.wheatworld.org
INCIDENCE OF BARLEY YELLOW DWARF VIRUS IN WILD GRASS POPULATIONS: IMPLICATIONS FOR BIOTECHNOLOGY RISK ASSESSMENT Alison G. Power and Susanna K. Remold

Last Updated December 31, 2002 by Peter Sforza