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 KSU Photo  American Wheat Striate Mosaic
Symptoms: White parallel lines found mostly on the underside of the leaf and brown spots on glumes later in the season. Scouting: Symptoms will start to show in the early spring and continue through harvest. Treatment: The Painted Leafhopper is the vector; treat by planting late to reduce infection and select reesistant varieties. KSU Photo  Barley Yellow Dwarf
Symptoms: Leaf tips turn yellow to purple and mid keeps a dark green color. Scouting: First symptoms normally occur during the boot stage, however scouting/controlling vectors (Greenbugs and Bird Cherry-Oat Aphids) is important. Treatment: Control vectors such as Greenbugs and Bird Cherry-Oat Aphids and select resistant varieties. KSU Photo  Dryland Root Rot
Symptoms: White heads later in the season; the base of the stem and crown will turn a pink to white color. Scouting: Symptoms typically occur from heading to maturity. Treatment: Fungicide treatment may or may not work. KSU Photos  High Plains Mosaic
Symptoms: Spotty, yellow streaks at the leaf tips. Scouting: Symptoms will typically become apparent in early spring to heading. Treatment: Control wheat curl mites (the vector for High Plains Mosaic) by later planting and control of volunteer wheat before seeding. KSU & OSU Photos  Leaf Rust
Symptoms: Orange pustules (sores) on the upper surface of the leaf. Scouting: Symptoms typically occur in early spring to heading, but may occur in the fall as well. Treatment: Selecting a resistant variety is most successful; seed treatments have shown fall control, and foliar fungicide applications can be feasible on high yield potential wheat. KSU & OSU Photos  Powdery Mildew
Symptoms: White cottony blotches on leaves spotted with black dots. Scouting: Can be found early spring to heading. Treatment: Not a real problematic disease, resistant variety selection is the best control. KSU Photos  Seedling Blight
Symptoms: Brown lesions on seedling wheat plants. Scouting: Symptoms are seen in seedlings in the fall. Treatment: Later planting can reduce occurrences. |
KSU Photo Stem rust
Symptoms: Dark red pustules (sores) found on the stems, leaves and heads. Scouting: Normally not seen until later in season as it thrives in high temperature conditions. Treatment: Select resistant varieties; fungicide treatments may be economical in irrigated wheat. KSU Photo  Stripe Rust
Symptoms: Pustules (sores) found in "stripes" on the leaf surface. Scouting: Most pronounced symptoms found in early spring. Treatment: Plant varieties that show resistance; fungicides may be economical in irrigated wheat. KSU Photos  Take-All Root Rot
Symptoms: Stunted plants with white heads; roots will pull up easily and have a black lower stem. Scouting: Most pronounced symptoms occur at jointing and into heading. Treatment: Crop rotation or extended fallow period is the best control. KSU Photos  Tan Spot
Symptoms: Tan lesions with yellow borders can be found on leaf surfaces. Scouting: Can be seen most often from jointing to heading. Treatment: Crop rotation or some tillage activity in continuous wheat. KSU Photo  Wheat Soil-Borne Mosaic
Symptoms: Plants will have a spotted (mosaic) pattern of yellow and green on the leaf surface along with stunted plant growth. Scouting: Seen mostly in the spring just after "green up." Treatment: Selection of resistant varieties and later planting to avoid vector infection of virus. KSU Photo  Wheat Spindle Streak Mosaic
Symptoms: Yellow and light green streaks along leaf surface; will not lead to stunted plant growth. Scouting: Found in early spring after "green up." Treatment: There are varieties that express moderate resistance to this virus; also avoid early planting. KSU Photos  Wheat Streak Mosaic
Symptoms: Long yellow stripes at leaf tips and plant stunting. Scouting: Symptoms start occurring in April along field edges. Treatment: Control volunteer wheat before planting to avoid infection from wheat curl mites; also late planting and resistant variety selection can also be effective.  | |||||