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Pest Guide

Symptoms, treatments, and recommendations for treating anthracnose

Anthracnose

Colletotrichum Sp.

Pathogen:

Fungus

Type:

Risk:

HIGH

Antracnosis

Plantas decorativas de jardín y/o interior

Anthracnose: Symptoms and damage in decorative garden and/or indoor plants

Damage caused by anthracnose in decorative garden and/or indoor plants

WHO CAUSES IT?

Colletotrichum sp. It is a genus of phytopathogenic fungi that affects a wide variety of plants. These fungi survive in the remains of infected plants and in the soil as resistant structures called sclerotia or in the form of dormant mycelium. When environmental conditions are favorable, especially in the presence of high humidity and warm temperatures, fungi produce conidia, which are asexual spores. Conidia are dispersed by wind, water and contact with agricultural tools and machinery. Upon reaching a susceptible plant, the conidia germinate and penetrate plant tissues through wounds or natural openings. Once inside the plant, the fungus colonizes the tissue, producing lesions that can expand rapidly, compromising the health and performance of the plant.

SYMPTOMS

Anthracnose caused by Colletotrichum sp. It manifests itself in various parts of plants, including leaves, stems, flowers and fruits. The disease is characterized by the appearance of dark, sunken Taches in the affected areas, which can expand and join together, causing extensive necrosis. Affected tissues often develop a watery appearance and may exude a sticky fluid under high humidity conditions.

- Black or brown Taches on leaves and stems.
- Sunken lesions in fruits and flowers.
- Discoloration and death of plant tissues.
- Premature fall of leaves and fruits.
- Delay in plant growth.
- Deformation of flowers and fruits.
- Presence of masses of pink or orange spores in the lesions.
- Withering of aerial parts of the plant.

Anthracnose in decorative garden and/or indoor plants: How to recognize and treat it effectively

TEMPERATURE AND HUMIDITY

20°C a 30°C

80% a 100%

TRANSMISSION ROUTES

Spores carried by wind, Contact with infected soil, Contaminated tools, Irrigation with infected water, Infected plant material, Movement of sclerotia in soil

Do you want to remove this pest? Choose how you want to treat it.

TREATMENTS

Chemical treatments

• AZOXISTROBIN 25% [SC] P/V
• CAPTAN 47.5% [SC] P/V
• CIPRODINIL 37.5% + FLUDIOXONIL 25% [WG] P/P
• FOLPET 50% [SC] P/V
• FOLPET 80% [WG] P/P
• METIRAM 70% [WG] P/P
• PIRACLOSTROBIN 6.7% + BOSCALIDE 26.7% (I) [WG] P/P
• CUPRIC HYDROXIDE 25% (EXPR. IN CU) [WG] P/P
• LAMINARIN 4.5% [SL] P/S
• COPPER OXYCHLORIDE 35% (exp. in Cu) [WG] P/P
• COPPER OXYCHLORIDE 38% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 52% (EXPR. IN CU) [SC] P/V
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] P/P

Authorized treatments in organic farming

• CUPRIC HYDROXIDE 25% (EXPR. IN CU) [WG] P/P
• LAMINARIN 4.5% [SL] P/S
• COPPER OXYCHLORIDE 35% (exp. in Cu) [WG] P/P
• COPPER OXYCHLORIDE 38% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 52% (EXPR. IN CU) [SC] P/V
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] P/P

Biological control

• BACILLUS SUBTILIS (STRAIN QST 713) 1.34% [SC] P/V

Recommendations

- Use pathogen-free seeds and plants, obtained from reliable suppliers.
- Implement crop rotation practices to reduce the accumulation of the fungus in the soil.
- Apply preventive and systemic fungicides at critical stages of crop development.
- Maintain adequate spacing between plants to promote air circulation and reduce humidity.
- Remove and destroy remains of infected crops to prevent the spread of the fungus.
- Avoid overhead irrigation, especially in the afternoon or evening, to reduce humidity in the foliage.
- Use crop varieties resistant or tolerant to anthracnose.
- Disinfect tools and work equipment to prevent the spread of the pathogen.
- Regularly monitor crops for early detection of symptoms and apply control measures in a timely manner.