Vid
How to recognize and combat anthracnose in grapes
Anthracnose
Fungus
Type:
Risk to the plant:
HIGH
Elsinoe Ampelina (Glocosporium Ampelophagum)
Pathogen:
Antracnosis
WHO CAUSES IT?
Elsinoe ampelina is an ascomycete fungus, responsible for the disease known as anthracnose of the vine. This pathogen has a characteristic life cycle in which it goes through several stages, beginning as conidia or asexual spores that are spread mainly by wind or rain. Once the spores come into contact with vine tissues, such as leaves, stems and young fruits, they germinate under conditions of high humidity and optimal temperatures. The fungus penetrates plant tissues through small wounds or stomata, and begins to colonize the cells, causing necrosis. Primary infection usually occurs in spring, during periods of prolonged rain, and the fungus can continue to reproduce throughout the growing season if weather conditions favor it. Symptoms usually appear several days after the initial infection, when the pathogen has established its mycelial network inside the plant tissues.
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SYMPTOMS
Anthracnose is a devastating disease that affects the vine, causing necrotic Taches that seriously compromise the productivity and quality of the fruits. The first signs of infection are seen on the leaves and young shoots, where small brown Taches appear that expand rapidly. Severe damage reduces the photosynthetic capacity of the plant, and can lead to the death of entire shoots and, in severe cases, significant parts of the vine.
- Sunken circular Taches on leaves and stems.
- Necrosis of young shoots.
- Deformed fruits with dark and sunken lesions.
- Premature fall of leaves.
- Loss of vigor in the affected plant.
DEVELOPMENT CONDITIONS
Temperature:
20-30°C
Humidity:
85-100%
HOW IS IT SPREAD?
Rain, wind, contact between infected and healthy plants, contaminated tools
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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