Nigel Cattlin / Bird cherry-oat aphid (Rhopalosiphum padi) infestation on Wheat (Triticum aestivum) leaf with Barley yellow dwarf virus (BYDV) symptoms present.

Nigel Cattlin / Focus of infection of BYDV (barley yellow dwarf virus) with chlorosis and leaf tipping symptoms in maturing wheat crop in ear. England, UK.

Nigel Cattlin / Focus of infection of barley yellow dwarf virus (BYDV), red leaf damage symptoms on young oats crop, Hampshire, England, UK.

Nigel Cattlin / Focus of infection of barley yellow dwarf virus (BYDV), red leaf damage symptoms on young oat crop, Hampshire, England, UK.