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Leaf rust

Area of impact: Leaf

Description: First symptoms are tiny yellow flecks on the upper side of leaves. These later turn into reddish-brown pustules. Growth and seed filling will slow, and rust infections can make the plant more susceptible to other diseases.

Pathogen involved: Puccinia recondita (a fungus)

Timing/Conditions: Warm humid conditions favor rust development. Rust infections are most detrimental before or during flowering.

Contributing factors: This disease is found wherever temperate cereals are grown.

Management practices: Plant resistant varieties and early maturing cultivars. Avoid planting dense stands so air can circulate and light can penetrate the canopy. Destroy alternate hosts.

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