Royas
Yellow Rust
Puccinia Striiformis F.Sp. Tritici
Pathogen:
Fungus
Type:
Risk to the plant:
INTERMEDIATE
DESCRIPTION
WHO CAUSES IT?
The pathogen known as "yellow rust" is a fungal disease that affects various cereal crops, including wheat. This fungus, scientific name Puccinia striiformis f. sp. tritici, is characterized by a yellowish appearance on the infected leaves, forming elongated Taches that can merge and cover large areas of the plant. These Taches usually contain spores that, when dispersed, spread the disease to other nearby plants.
SYMPTOMS
In wheat, yellow rust causes significant damage by weakening the plant and reducing its capacity for photosynthesis. Symptoms include pale yellow Taches on the leaves, accompanied by a yellow or orange powder that corresponds to the spores of the fungus. Over time, these Taches can coalesce, forming larger areas of yellow on the leaves, which can lead to premature defoliation and, in severe cases, a decrease in crop yield.
TEMPERATURE AND HUMIDITY
10°C - 20°C
75% - 95%
HOW IS IT SPREAD?
Wind, direct contact with infected plants, transport of spores by animals or agricultural equipment.
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• AZOXISTROBIN 12% + TEBUCONAZOLE 20% [SC] P/V
• AZOXISTROBIN 25% [SC] P/V
• BROMUCONAZOLE 16.7% + TEBUCONAZOLE 10.7% [EC] P/V
• DIFENOCONAZOLE 25% [EC] P/V
• FENPICOXAMID 5% + PROTHIOCONAZOLE 10% [EC] P/V
• FLUXAPYROXAD 7.5% + PIRACLOSTROBIN 15% [EC] P/V
• MEFENTRIFLUCONAZOLE 10% + PIRACLOSTROBIN 10% [EC] P/V
• METCONAZOLE 9% [EC] P/V
• PROTHIOCONAZOLE 12.5% + TEBUCONAZOLE 12.5% [EC] P/V
• PROTHIOCONAZOLE 15% + BENZOVINDIFLUPYR 7.5% [EC] P/V
• PROTHIOCONAZOLE 25% [EC] P/V
• TEBUCONAZOLE 20% [EC] P/V
• TEBUCONAZOLE 20% [EW] P/V
• TEBUCONAZOLE 25% [EC] P/V
• TEBUCONAZOLE 25% [EW] P/V
• TEBUCONAZOLE 25% [WG] P/P
• TEBUCONAZOLE 43% [SC] P/V
• TEBUCONAZOLE 75% [WG] P/P
• TETRACONAZOLE 4% [ME] P/V
Authorized treatments in organic farming
-
Insect allies
PREDATORY MITES
LADYBUGS
LACEWINGS
PARASITIC WASPS
HOVERFLIES OR PARASITIC FLIES
PREDATORY BUGS
There are no natural allies
Mycodiplosis oidii (predatory mosquito)
EFFECTIVE PRODUCTS TO ELIMINATE THIS DISEASE
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To prevent and control yellow rust in wheat crops, it is essential to implement integrated pest management practices. This includes selecting resistant varieties, proper use of fungicides, crop rotation, and removal of infected crop residues. Additionally, it is important to regularly monitor fields to detect the presence of the disease early and take preventive or control measures as necessary.
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