Micosis/Hongos
Leaf Spot
Drechslera Cannabis
Pathogen:
Fungus
Type:
Risk to the plant:
MILD
DESCRIPTION
WHO CAUSES IT?
Drechslera is a genus of fungi that includes several phytopathogenic species capable of affecting a wide range of plants, including cannabis. These fungi usually cause foliar diseases, producing lesions on the leaves that can compromise the health and performance of the plant.
SYMPTOMS
Drechslera infection in cannabis primarily manifests as lesions on the leaves, which can vary in appearance depending on the specific fungal species and environmental conditions. The lesions are usually dark brown or black and may have a yellowish or necrotic border. Over time, these lesions can expand and fuse, affecting larger areas of the plant and causing defoliation.
TEMPERATURE AND HUMIDITY
20°C - 30°C
60% - 80%
HOW IS IT SPREAD?
Wind, rain, direct contact with infected plants, contaminated seeds.
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• AZOXISTROBIN 25% [SC] P/V
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
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To prevent and control Drechslera infection in cannabis crops, it is important to implement integrated pest and disease management practices. This includes the removal of infected plant residues, crop rotation, use of certified seeds and weed control to reduce the presence of the fungus in the crop environment. In addition, it is recommended to maintain good soil drainage and avoid excess moisture to reduce favorable conditions for the disease.
Recommendations
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