Berries
How to recognize and combat anthracnose in berries
Anthracnose
Fungus
Type:
Risk to the plant:
HIGH
Colletotrichum Sp.
Pathogen:
Antracnosis
WHO CAUSES IT?
Colletotrichum sp. is a group of ascomycete fungi that includes several pathogenic species that affect a wide range of crops, including berries. These fungi produce sporulation structures, known as acervuli, on infected plant surfaces. The acervuli release spores called conidia, which are spread primarily through water and wind. When conidia land on moist plant tissues, they germinate and produce hyphae that invade host tissues, causing necrosis and lesions. Infections can spread rapidly under conditions of high humidity and moderate to warm temperatures. Additionally, Colletotrichum can form resistance structures called sclerotia, which allow it to survive in soil and plant debris during unfavorable conditions. These resistant structures can germinate when conditions become favorable again, restarting the infectious process.
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SYMPTOMS
The disease known as anthracnose, caused by Colletotrichum sp., severely affects berries, causing a variety of symptoms that compromise the quality and production of the fruits. The disease can manifest itself in any part of the plant, including leaves, stems and fruits. Symptoms include:
- Black or brown Taches on leaves, stems and fruits.
- Sunken lesions on fruits, often with dark edges.
- Premature fall of leaves and fruits.
- Discoloration and necrosis in infected tissues.
- Formation of acervuli with masses of pink or orange spores in the lesions.
- Reduction in plant growth and vigor.
- Mummified or rotten fruits.
DEVELOPMENT CONDITIONS
Temperature:
20°C - 30°C
Humidity:
80% - 100%
HOW IS IT SPREAD?
Irrigation water, Contaminated soil, Infected plant material, Gardening tools, Wind, Movement of agricultural machinery
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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