Plantas decorativas de jardín y/o interior
How to recognize and combat ash in decorative garden and/or indoor plants
Ash
Fungus
Type:
Risk to the plant:
INTERMEDIATE
Podosphaera Sp, Blumeria Sp, Erysiphe Sp., Golovinomyces Sp. Laveillula Sp.
Pathogen:
Ceniza
WHO CAUSES IT?
The fungi of the genus Podosphaera, Blumeria, Erysiphe, Golovinomyces and Laveillula are pathogens that cause powdery mildew in plants. These fungi are characterized by the production of asexual spores called conidia, which are easily dispersed by the wind. Once the conidia find a suitable surface on the leaves, shoots or flowers of the host plant, they germinate and form a superficial mycelium that adheres to the cuticle of the plant. The fungus extracts nutrients through haustoria, specialized structures that penetrate epidermal cells without destroying them. During the end of the growing season, some of these fungi produce sexual structures called cleistothecia, which contain ascospores and serve to perpetuate the fungus, allowing it to survive in plant remains until the next season.
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SYMPTOMS
The powdery mildew disease caused by these fungi in plants is visible mainly on the surface of the leaves, although it can also affect stems and flowers. This disease is very characteristic and easy to identify by the presence of a white or grayish powder on the surface of the plant. The infection causes general weakening of the plant, reducing its photosynthetic capacity and, in severe cases, can lead to premature defoliation. Affected plants show:
- Appearance of whitish Taches on leaves and shoots.
- Rolled or deformed leaves.
- Slowed and stunted plant growth.
- Reduced or deformed flowering.
- Fruits with superficial Taches or deformations.
- Loss of general vigor in the plant.
- Necrosis in severely affected tissues.
DEVELOPMENT CONDITIONS
Temperature:
15°C - 25°C
Humidity:
40% - 80%
HOW IS IT SPREAD?
Wind, contaminated tools, direct contact between plants, insect vectors, infected plant remains
HOW TO ELIMINATE IT?
Home 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.
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