Powdery Mildew
Podosphaera Leucotricha
Pathogen:
Type:
Fungus
Risk:
INTERMEDIATE
Manzano
Oídio
WHO CAUSES IT?
Podosphaera leucotricha is a phytopathogenic fungus that causes the disease known as powdery mildew in apple trees and other fruit trees. The fungus develops on the surface of leaves, shoots and fruits, forming a visible mycelium and a white or grayish layer of sporulation. Podosphaera leucotricha can overwinter as mycelium in infected buds and produce spores when conditions are favorable.
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SYMPTOMS
Powdery mildew in apple trees manifests itself with the appearance of a white or grayish growth on the surface of the leaves, shoots and fruits. The disease can cause leaf deformation and wrinkling, as well as a reduction in the quality and quantity of the crop.
• White or grayish growth on leaves, shoots and fruits.
• Deformation and wrinkling of the leaves.
• Reduction in the quality and quantity of the harvest.
• Fruits with superficial lesions and reduction in commercial quality.
TEMPERATURE AND HUMIDITY
15°C - 25°C
60% - 80%
TRANSMISSION PATHS
Air, contact with infected plants, contaminated tools.
Do you want to remove this disease? Choose how you want to treat it.
TREATMENTS
Chemical treatment
• ORANGE OIL 60g/L [ME] P/S
• SULFUR 70% [SC] P/V
• SULFUR 72% [SC] P/V
• SULFUR 80% [SC] P/V
• SULFUR 82.5% [SC] P/V
• BOSCALIDE 25.2% + PYRACLOSTROBIN 12.8% [WG] P/P
• BUPIRIMATE 25% [EC] P/V
• CIFLUFENAMID 5.13% [EW] P/V
• DIFENOCONAZOLE 1.67% [EC] P/V
• FLUOPYRAM 20% + TEBUCONAZOLE 20% [SC] P/V
• FLUXAPYROXAD 30% [SC] P/V
• POTASSIUM HYDROGEN CARBONATE 99% [SP] P/P
• KRESOXIM-METHYL 50% [WG] P/P
• SOY LECITHIN
• MEFENTRIFLUCONAZOLE 7.5% [SC] P/V
• Penconazole 10% [EC] P/V
• PENCONAZOLE 20% [EW] P/V
• CALCIUM POLYSULPHIDE 38% [DC] P/V
• TEBUCONAZOLE 20% [EW] P/V
• TEBUCONAZOLE 25% [WG] P/P
• TETRACONAZOLE 10% [EC] P/V
• TETRACONAZOLE 12.5% [ME] P/V
• TETRACONAZOLE 4% [ME] P/V
Authorized treatments in organic farming
• ORANGE OIL 60g/L [ME] P/S
• SULFUR 70% [SC] P/V
• SULFUR 72% [SC] P/V
• SULFUR 80% [SC] P/V
• SULFUR 82.5% [SC] P/V
• POTASSIUM HYDROGEN CARBONATE 99% [SP] P/P
• SOY LECITHIN
• CALCIUM POLYSULPHIDE 38% [DC] P/V
Biological control
-
Recommendations
• Use apple varieties resistant or tolerant to Podosphaera leucotricha.
• Practice proper pruning to improve air circulation and reduce humidity.
• Disinfect pruning tools and equipment to prevent the spread of the fungus.
• Apply specific fungicides following local recommendations.
• Avoid excess nitrogen fertilization, as it can favor the spread of the fungus.
• Carry out regular monitoring to detect and eliminate infected parts.
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TREATMENTS
Homemade treatments
There are no home treatments
Natural allies
Chemical treatments
There are no treatments for this disease. Treatments are directed at the insect vectors that transmit it. See insect treatments.
RECOMMENDATIONS
REPELLENT PLANTS
RECOMMENDED PRODUCTS TO ELIMINATE THIS PEST
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*The recommended treatments are still recommendations according to the databases of the authorities and at no time do they replace the guidelines established according to the legislation of each country
*The products shown are recommendations and are not our own products. As Amazon Associates, we earn revenue from purchases of recommended products.
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