Passalora fulva

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Passalora fulva

Passalora fulva is a fungal plant pathogen that causes the disease known as tomato leaf mold. This pathogen primarily affects tomato plants, leading to significant economic losses in tomato production.

Symptoms

Symptoms of Passalora fulva infection on tomato plants include the development of yellow or brown spots on the leaves, which eventually turn into a fuzzy, grayish mold. As the disease progresses, the leaves may become distorted and eventually die off.

Disease Cycle

Passalora fulva spreads through spores that are carried by wind or water. The fungus thrives in warm and humid conditions, making it particularly problematic in greenhouses or during periods of high humidity.

Management

To manage Passalora fulva, it is important to practice good sanitation in the greenhouse or garden. This includes removing and destroying infected plant material, ensuring proper air circulation, and avoiding overhead watering. Fungicides can also be used to control the spread of the disease.

Prevention

Preventative measures for Passalora fulva include planting resistant tomato varieties, rotating crops, and maintaining proper spacing between plants to reduce humidity levels and promote air circulation.