Wheat streak mosaic
Area of impact: Leaf
Description: Short light green or yellow streaks that run parallel with leaf veins. Symptoms can show as early as green-up in the spring. Plants may be stunted and thin throughout the season.
Pathogen involved: Virus transmitted by the soil fungus Polymyxa graminis.
Timing/Conditions: Infection starts in fall winter or early spring and prefers wet soils.
Contributing factors: Occurs wherever fungus occurs in the soil.
Management practices: Fungicides will not control the virus. Plant resistant varieties and delay planting.