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How to recognize and combat bacterial blight in blueberries
Bacterial Blight
Bacterium
Type:
Risk to the plant:
HIGH
Pseudomonas Syringae
Pathogen:
Bacteriosis
WHO CAUSES IT?
Pseudomonas syringae is a phytopathogenic bacteria that affects a wide variety of plants, including blueberries. This bacteria is highly adaptable and can survive in various environmental conditions, allowing its persistence in soil, plant remains and on the surface of leaves. Pseudomonas syringae is capable of colonizing the surface of plants and penetrating through stomata, wounds or lesions in plant tissues. Once inside the plant, the bacteria multiply rapidly and spread through the vascular system, causing the release of toxins and enzymes that damage plant cells. During wet and cold periods, the bacteria reproduces more effectively, facilitating its spread. Rain, wind and splashing water contribute to the spread of the bacteria to new plants and plant parts, perpetuating the infection cycle.
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SYMPTOMS
In blueberries, Pseudomonas syringae causes the disease known as bacterial blight, which can have a significant impact on the health and production of the crop. The symptoms of this disease vary depending on the severity of the infection and environmental conditions. The presence of bacterial blight manifests itself in various parts of the plant, affecting both the foliage and the fruits and branches.
- Dark, watery Taches on the leaves.
- Necrosis on the edges and tips of the leaves.
- Necrotic lesions on branches and stems.
- Soft rot in fruits, especially in humid conditions.
- Premature defoliation.
- Reduction in the quality and quantity of fruits.
- Regressive death of affected branches.
DEVELOPMENT CONDITIONS
Temperature:
12°C - 25°C
Humidity:
70% - 90%
HOW IS IT SPREAD?
Wind, irrigation water, contaminated growing tools, direct contact between plants, 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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