Apio
How to recognize and combat white mold on celery
White Mold
Fungus
Type:
Risk to the plant:
CRITICAL
Sclerotina Sclerotiorum
Pathogen:
Moho blanco
WHO CAUSES IT?
Sclerotinia sclerotiorum is a phytopathogenic fungus that affects a wide range of plants, including celery. This organism produces resistance structures called sclerotia, which can survive in the soil for several years in the absence of a host. When conditions are favorable, sclerotia germinate and form apothecia, which are cup-shaped structures that release spores into the air. These spores can be transported by wind to susceptible plants, where they germinate and produce mycelium that invades plant tissues. The mycelium spreads through plant tissue, decomposing it and causing rot. The reproduction of the fungus includes both an asexual phase, with the production of conidia, and a sexual phase, with the formation of sclerotia that guarantee survival in adverse conditions.
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SYMPTOMS
In celery, Sclerotinia sclerotiorum causes the disease known as white mold, which manifests itself mainly in conditions of high humidity and moderate temperatures. This disease severely affects the quality and yield of celery, as the fungus invades the plant tissues and causes wet, mushy decay. Initial symptoms include the appearance of watery Taches on the leaves and stems, which eventually become covered with a white, cottony mycelium. As the disease progresses, black sclerotia can be seen embedded in the affected plant tissue.
- Watery Taches on leaves and stems
- White, cottony mycelium on the surface of the Taches
- Wet and soft decomposition of plant tissue
- Presence of black sclerotia embedded in the affected tissues
- Withering and collapse of affected plants
DEVELOPMENT CONDITIONS
Temperature:
15-25°C
Humidity:
80-100%
HOW IS IT SPREAD?
Aerial spores, contaminated soil, irrigation water, infected plant remains
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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