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Mildiu
WHAT IS AND HOW TO ELIMINATE
Mildew
Plasmopara Viticola
Pathogen:
Oomycete
Type:
Risk to the plant:
INTERMEDIATE
DESCRIPTION
WHO CAUSES IT?
Downy mildew is a disease caused by fungi of the genus Peronospora, one of the most common being Peronospora sparsa. This pathogen affects a wide variety of plants, including cannabis. It manifests itself as pale yellow Taches on the leaves, which eventually turn into necrotic Taches surrounded by a yellow halo, and finally into a powdery white mold on the underside of the leaves.
SYMPTOMS
In cannabis, downy mildew can cause yellow Taches on the leaves, which then turn brown and necrotic. These Taches can spread quickly, covering large areas of the plant. Additionally, a white, powdery mold can be seen on the underside of infected leaves, indicating an advanced infestation.
TEMPERATURE AND HUMIDITY
15°C - 25°C
80% - 95%
HOW IS IT SPREAD?
Wind, raindrops, direct contact with infected plants, transportation of contaminated plant material.
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• ORANGE OIL 6% [SL] P/V
• ORANGE OIL 60g/L [ME] P/S
• AZOXISTROBIN 25% [SC] P/V
• COS-OGA 1.25% [SL] P/V
• FOSETIL-AL 80% [WG] P/P
• POTASSIUM PHOSPHONATES 51% (Exp. as phosphorous acid) [SL] P/V
• CUPRIC HYDROXIDE 13.6% (EXPR. IN CU) + COPPER OXYCHLORIDE 13.6% (EXPR. IN CU) [SC] P/V
• LAMINARIN 4.5% [SL] P/S
• MANDIPROPAMID 25% [SC] P/V
Authorized treatments in organic farming
• ORANGE OIL 6% [SL] P/V
• ORANGE OIL 60g/L [ME] P/S
• COS-OGA 1.25% [SL] P/V
• CUPRIC HYDROXIDE 13.6% (EXPR. IN CU) + COPPER OXYCHLORIDE 13.6% (EXPR. IN CU) [SC] P/V
• LAMINARIN 4.5% [SL] P/S
Insect allies
EFFECTIVE PRODUCTS TO ELIMINATE THIS PEST
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Effective against all types of fungi
To prevent and control mildew in cannabis crops, it is recommended to implement preventive measures such as maintaining good soil drainage, avoiding excess watering and high humidity, and providing adequate air circulation around the plants. Crop rotation and removal of infected plants are also advised to prevent the spread of the pathogen.
Recommendations
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