Micosis/Hongos
Leaf spot: what it is, how it originates, and how to eliminate it effectively
Leaf Spot
Pseudocercospora Cannabina
Pathogen:
Fungus
Type:
Risk to the plant:
INTERMEDIATE
DESCRIPTION
WHO CAUSES IT?
Pseudocercospora is a genus of fungi that includes several phytopathogenic species known to cause diseases in a wide variety of plants, including cannabis. These fungi are responsible for the disease known as pseudocercospora leaf spot in cannabis.
SYMPTOMS
They are fungi that mainly infect the leaves of the plant, causing circular or irregular necrotic Taches on the leaves, which can vary in color from light brown to black. As the disease progresses, the Taches may merge and cover large areas of the leaves, leading to a decrease in photosynthetic capacity and, in severe cases, premature defoliation of the plant.
TEMPERATURE AND HUMIDITY
20°C - 28°C
60% - 80%
HOW IS IT SPREAD?
Wind-borne spores, contaminated irrigation water, infected plant material.
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
-
Treatments allowed in organic farming
-
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
To prevent and control pseudocercospora leaf spot in cannabis crops, it is important to implement integrated pest and disease management measures. This includes selecting resistant varieties where possible, removing infected plant debris to reduce the source of inoculum, rotating crops, maintaining good ventilation and drainage in the growing area, and applying specific fungicides. when necessary.
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