 |
ProCrop |
Barley Yellow Dwarf/Red Leaf
Barley yellow dwarf symptoms in small grains are fairly common over much of our area. Random patches of stunted, yellowing plants ranging from one or a few plants up to fairly large areas can be seen in spring wheat fields as well as barley. Similarly, red leaf symptoms are common in oats.
Barley yellow dwarf virus persists in winter cereal grains, perennial grasses and in the aphids that transmit it. The severity of an infection will depend upon the number of aphids present, the percent viruliferous aphids, crop growth stage and other factors. The aphid vectors are most troublesome when populations increase during cool weather. Late seeded crops are at greatest risk.
Early season infection can lead to significant stunting and leaf discoloration. Late infection often is seen only as discoloration of the upper leaves. Adverse growing conditions can aggravate symptoms and ultimately increase yield loss.
Back to Insects Menu
Back to Main ProCrop Index
