Yellow rust, also known as stripe rust, is a fungal disease that primarily affects cereal crops like wheat, barley, and triticale. It's a major threat to global food security, causing significant yield losses if left unchecked. Bright yellow, elongated pustules arranged in stripes parallel to the leaf veins. These pustules are filled with spores that serve as the reproductive units of the fungus. Yellow rust can reduce wheat yields by up to 80% in severe cases. It can also affect the quality of the grain, making it less suitable for milling and baking.
- Type of Infestation: Fungal Disease
- Common Name: Leaf Spot / Stripe Rust
- Causal Organism: Puccinia striiformis
- Affected Parts Of the plant: Leaves
Environmental favorable factors for pests/Diseases:
- Cool temperatures: The fungus thrives in cool temperatures, typically between 50-60°F (10-15°C).
- Humid conditions: High humidity favors the development and spread of the fungus.
- Dense planting: Densely planted crops create a microclimate with reduced air circulation and increased humidity, which favors the fungus.
Symptoms of Pest/Disease:
- The most characteristic symptom of yellow rust is the appearance of parallel rows of yellowish-orange colored pustules on the leaves of adult plants. These pustules are small, elongated, and often arranged in stripes, hence the name stripe rust.
- Infected leaves may become yellowed and stunted, and the heads may be malformed.
- In severe cases, the entire plant may die.
Measures to control Pests/Diseases:
Products |
Technical Names |
Dosages |
Mancozeb 75% WP |
500gm per Acre |
|
Metalaxyl-M 3.3% + Chlorothalonil 33.1% SC |
300-400 ml/acre |
|
Tebuconazole 10 % + sulphur 65 % wg |
500 grams per acre |
|
Metalaxyl 8 % + Mancozeb 64 % wp |
1.5to2kg/ha |
|
Propiconazole 25 % EC |
200-300ml/acre |
|
Propiconazole 13.9 % + Difenoconazole 13.9 % |
1 - 1.5 ml/1lt |
|
Azoxystrobin 11.00 % Tebuconazole 18.30 % SC |