Wheat stripe rust, a disease occurring frequently during the cultivation of wheat, poses a significant threat to wheat yield. So, what treatments are available for wheat stripe rust? Let's find out.
Symptoms of Wheat Stripe Rust
Wheat stripe rust can occur at various stages of wheat growth. In the early stages, small pale yellow spots appear at the base of the seedlings, gradually developing into yellow-brown elongated lesions. These lesions expand, darken in color, and spread internally, leading to decay of the stem base and stem nodes. The affected stems exhibit a streaked appearance, and the wheat seedlings fail to produce new leaves. In the later stages of wheat growth, lesions on the leaf sheaths merge to form streaks, with a light yellow-brown center surrounded by distinct brown rings. Most stem lesions are elongated with brown margins and gray-white to straw-yellow centers.
Causes of Wheat Stripe Rust
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Soil Type: Wheat stripe rust is more severe in sandy soils compared to loamy soils.
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Climate: Excessive rainfall and prolonged overcast weather during the wheat growing season create favorable conditions for the development of stripe rust.
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Planting Time and Density: Early planting and high planting densities contribute to increased incidence of stripe rust.
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Weeds: Weed competition for nutrients, moisture, and space in wheat fields weakens wheat plants and makes them more susceptible to infection.
Treatments for Wheat Stripe Rust
There are several fungicides available for controlling stripe rust, including propiconazole, tebuconazole, epoxiconazole, and prothioconazole. Spraying the appropriate fungicide at the recommended dosage and timing can effectively control the disease. Here are a few examples:
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Apply 75 grams of 70% methyl thiophanate powder or 30 milliliters of 25% propiconazole emulsion per acre, diluted in 80 kilograms of water for spraying. For heavily infected wheat plants, apply more fungicide to ensure coverage of the lower stem. Repeat the application after 10-15 days.
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Mix 25% powder rust ene with seeds for sowing. This treatment has a certain effect on early-stage infections, with an effectiveness of up to 30%~40%.
Above are the treatments available for wheat stripe rust. Proper field management practices are essential for reducing the incidence of this disease during wheat cultivation.
