IDAHO WHEAT COMMISSION

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Low Potential for Spring Wheat Damage from Stripe Rust

Stripe rust season is mostly over for winter wheat and poses low risk to spring wheat due to continued dry weather, according to USDA plant pathologist Xianming Chen. Fungicide is only recommended for susceptible spring wheat varieties in irrigated or moist areas. Commercial fields saw reduced rust levels due to fungicide use and resistant varieties. Chen also warned of global concerns: new stripe rust strains virulent to the resistance gene Yr15 have emerged in Europe, causing crop damage. Although the U.S. hasn't seen these virulent strains, ongoing monitoring is essential.