Micosis/Hongos
Citrus black spot: what it is, how it occurs, and how to effectively remove it.
Citrus Black Spot
Phyllosticta Citricarpa
Pathogen:
Fungus
Type:
Risk to the plant:
INTERMEDIATE
DESCRIPTION
WHO CAUSES IT?
Phyllosticta citricarpa is a phytopathogenic fungus that causes the disease known as citrus black spot. The fungus can infect different parts of the plant, including leaves, fruits, and occasionally branches. The damage caused by this fungus can affect the quality and quantity of production, reducing the commercial value of the fruits.
SYMPTOMS
Citrus black spot is characterized by the appearance of dark lesions on leaves, fruits, and sometimes branches. These lesions can vary in size and shape, and usually have a dark center surrounded by a yellow halo.
• Dark lesions on leaves, fruits and branches.
• Yellow halo around the lesions.
• Premature fall of leaves and fruits.
• Aesthetic damage to the fruits, which reduces their commercial value.
• General weakening of the plant.
TEMPERATURE AND HUMIDITY
20°C - 30°C
70% - 95%
HOW IS IT SPREAD?
Spores carried by wind, rain, direct contact, contaminated pruning tools.
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• COPPER OXYCHLORIDE 38% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WP] P/P
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] P/P
Authorized treatments in organic farming
• COPPER OXYCHLORIDE 38% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WP] P/P
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] 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
• Use of resistant varieties when possible.
• Application of specific fungicides during critical moments of the growth cycle.
• Removal and destruction of infected leaves and fruits.
• Avoid excess humidity in the crop.
• Improve air circulation between plants.
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