
Anthracnose
Colletotrichum Gloeosporioides
Pathogen:
Type:
Fungus
Risk:
HIGH

Arándano
Antracnosis

WHO CAUSES IT?
Colletotrichum gloeosporioides is a phytopathogenic fungus known to cause anthracnose in various plants, including blueberry. This fungus can survive in soil, in plant debris and as hyphae in infected plant tissues. During favorable conditions, especially high humidity and warm temperatures, the fungus produces conidia that are dispersed by wind, rainwater, and agricultural practices. Conidia germinate on the surface of leaves, flowers and fruits, producing adhesion structures that allow them to penetrate plant tissues. Once inside, the fungus develops a network of mycelium that spreads and causes necrosis in infected tissues. This process culminates in the formation of new spores that perpetuate the infectious cycle, spreading the disease to other parts of the plant and to other nearby plants.
SYMPTOMS
Anthracnose caused by Colletotrichum gloeosporioides in blueberry manifests with visible symptoms in various parts of the plant, particularly in the leaves, flowers and fruits. This disease can lead to significant losses in fruit production and quality, affecting the economic viability of the crop.
- Black or brown Taches on leaves, flowers and fruits.
- Development of sunken lesions in fruits.
- Fruit rot, which becomes soft and watery.
- Premature defoliation.
- Necrosis in young shoots and branches.
- Reduction in the size and quality of the fruits.
- Premature fruit drop.



TEMPERATURE AND HUMIDITY
25°C - 30°C
80% - 100%
TRANSMISSION ROUTES
Wind, Rainwater, Contaminated tools, Infected plant remains, Direct contact between plants
Do you want to remove this disease? Choose how you want to treat it.
TREATMENTS
Chemical treatments
• CIPRODINIL 37.5% + FLUDIOXONIL 25% [WG] P/P
• FLUOPYRAM 25% + TRIFLOXISTROBIN 25% [SC] P/V
• LAMINARIN 4.5% [SL] P/S
• COPPER OXYCHLORIDE 35% (exp. in Cu) [WG] P/P
• PIRACLOSTROBIN 6.7% + BOSCALIDE 26.7% (I) [WG] P/P
Treatments allowed in organic farming
• LAMINARIN 4.5% [SL] P/S
• COPPER OXYCHLORIDE 35% (exp. in Cu) [WG] P/P
Biological treatments
• BACILLUS SUBTILIS (STRAIN QST 713) 1.34% [SC] P/V
Recommendations
- Carry out regular monitoring of the crop to detect the presence of symptoms early.
- Eliminate and destroy remains of infected plants to reduce the inoculum in the field.
- Avoid wounds on plants during cultural work, as they can serve as entry points for the fungus.
- Disinfect work tools and equipment to prevent the spread of the fungus.
- Implement a crop rotation to reduce the accumulation of pathogens in the soil.
- Maintain adequate aeration and drainage in the field to minimize high humidity conditions.
- Apply preventive and curative fungicides according to technical recommendations and rotate products to avoid resistance.
- Promote integrated pest and disease management practices, combining cultural, biological and chemical methods.
- Use varieties resistant or tolerant to the pathogen when available.
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*The recommended treatments are recommendations based on the authorities' databases and in no way replace the guidelines established by the legislation of each country.
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TREATMENTS
Homemade remedies
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


















