Tomate
How to recognize and combat gray rot in tomatoes
Gray Rot
Fungus
Type:
Risk to the plant:
HIGH
Botrytis Cinerea
Pathogen:
Podredumbre gris
WHO CAUSES IT?
Botrytis cinerea is a phytopathogenic fungus widely known to cause gray rot in various plants, including tomatoes. This fungus produces asexual spores called conidia, which are released and dispersed primarily through wind and water. These spores germinate in conditions of high humidity and moderate temperatures, penetrating plant tissues through wounds or directly through healthy plant surfaces. Botrytis cinerea is characterized by its ability to survive in plant remains and other decomposing organic materials, where it forms resistance structures called sclerotia. These structures allow the fungus to persist in the environment during unfavorable periods, resuming its infectious activity when conditions become suitable. The fungus can infect both in a latent and active state, further complicating its management and control.
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SYMPTOMS
Gray rot caused by Botrytis cinerea in tomato affects various parts of the plant, including leaves, stems, flowers and fruits. This disease is characterized by the appearance of watery Taches that quickly turn brown and are covered with dense gray sporulation. The infection significantly reduces the quality and quantity of production, causing significant economic losses.
- Watery Taches that turn brown
- Gray mold on the surface of affected areas
- Lesions on leaves and stems
- Rot of flowers and fruits
- Premature fall of flowers and fruits
- General weakening of the plant
- Reduction of plant growth and development
DEVELOPMENT CONDITIONS
Temperature:
15-25°C
Humidity:
90-100%
HOW IS IT SPREAD?
Wind, contaminated irrigation water, contaminated agricultural tools, direct contact with infected plants, infected crop residues, infested soil
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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