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How to recognize and combat powdery mildew in watermelon
Powdery Mildew
Fungus
Type:
Risk to the plant:
INTERMEDIATE
Podosphaera Xanthii
Pathogen:
Oídio
WHO CAUSES IT?
Podosphaera xanthii is a fungus that causes powdery mildew, a fungal disease that affects a variety of plants, including cucurbits such as pumpkins, zucchini, cucumbers and melons. Powdery mildew is one of the most common and devastating diseases in cucurbit crops, characterized by white mycelial growth on the leaves, stems and fruits of infected plants. This fungus can significantly reduce the yield and quality of crops, especially under conditions of high humidity and moderate temperatures.
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SYMPTOMS
In cucurbits, powdery mildew causes a series of easily recognizable symptoms. These include the formation of a white or grayish powder on the tops and undersides of leaves, as well as on stems and fruits. Additionally, yellow Taches can be observed on infected leaves, which may become necrotic over time. In severe cases, the disease can affect the growth and development of plants, causing deformation of fruits and reduced yield.
DEVELOPMENT CONDITIONS
Temperature:
20°C - 25°C
Humidity:
50% - 90%
HOW IS IT SPREAD?
Wind, direct contact with infected plants, spread of spores by splashing water, contaminated cultivation tools.
HOW TO ELIMINATE IT?
Home treatments
There are no home treatments
Natural allies
Chemical treatments
There are no treatments for this disease. Treatments are directed at the insect vectors that transmit it. See insect treatments.
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