Fumagina o negrilla
Sooty mold or black mold: what it is, how it originates, and how to remove it effectively
Bold Or Sooty Mold
Fungal Complex
Pathogen:
Fungus
Type:
Risk to the plant:
MILD
DESCRIPTION
WHO CAUSES IT?
Sooty mold is a fungal disease caused by several fungi of the genus Capnodium and other related genera. This fungus is not pathogenic itself, but develops as a black layer of sooty fungus on honeydew produced by sucking insects such as aphids, scale insects and whiteflies. Although sooty mold does not directly harm the plant, it can affect its health by blocking sunlight and reducing photosynthesis, leading to overall weakening.
SYMPTOMS
In citrus, sooty mold appears as a black, powdery coating that covers the leaves, shoots and fruits. This fungus develops on honeydew excreted by sucking insects that feed on plant sap, such as scale insects and aphids. Visible symptoms include leaves and fruits covered by a black, sticky coating, which can reduce the quality of the fruit and affect its marketability.
TEMPERATURE AND HUMIDITY
20°C - 30°C
70% - 90%
HOW IS IT SPREAD?
Sucking insects, wind, direct contact with infected plants, human transportation, agricultural equipment.
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• SULFUR 80% [WG] P/P
• COPPER OXYCHLORIDE 35% (exp. in Cu) [WP] P/P
Authorized treatments in organic farming
• SULFUR 80% [WG] P/P
• COPPER OXYCHLORIDE 35% (exp. in Cu) [WP] P/P
Insect allies
PREDATORY MITES
LADYBUGS
LACEWINGS
PARASITIC WASPS
HOVERFLIES OR PARASITIC FLIES
PREDATORY BUGS
There are no natural allies
Mycodiplosis oidii (predatory mosquito)
EFFECTIVE PRODUCTS TO ELIMINATE THIS DISEASE
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Effective against all types of fungi
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To prevent and control sooty mold in citrus, it is important to control the population of sucking insects, as they are the vectors of the fungus. Biological control methods can be used, such as the introduction of predatory insects, and specific insecticides can be applied when necessary. Additionally, it is important to keep the plant healthy through proper fertilization, regular pruning and controlled watering to avoid stress and reduce honeydew production.
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