Rust on turf appears during warm to hot dry periods, causing the turf blades to turn what color due to pustules on the blades?

Rust on turf appears during warm to hot dry periods, causing the turf blades to turn what color due to pustules on the blades?

• A. Green
• B. Reddish brown to yellow orange
• C. Deep purple
• D. Blue

Answer: (B)

Rust on turf shows up in warm, dry conditions and the pustules on the leaf blades produce spores that give the blades a reddish brown to yellow-orange color. The orange-to-rust spores accumulate in these pustules, turning the foliage that color as the disease develops. Green or purple shades don’t match rust symptoms, and blue isn’t typical for this disease either. So the blades turn reddish brown to yellow orange because of the orange-rust colored pustules producing spores on the leaf surface.

Rust on turf shows up in warm, dry conditions and the pustules on the leaf blades produce spores that give the blades a reddish brown to yellow-orange color. The orange-to-rust spores accumulate in these pustules, turning the foliage that color as the disease develops. Green or purple shades don’t match rust symptoms, and blue isn’t typical for this disease either. So the blades turn reddish brown to yellow orange because of the orange-rust colored pustules producing spores on the leaf surface.