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Wild celery > Dark blotch
What Causes Dark Blotch on Wild celery Leaves?
Wild celery, also known as Celery
Dark blotch is a fungal disease that severely affects Wild celery, leading to significant yield reduction. This plant disease causes discoloration and wilting, negatively impacting the health and productivity of the plant. Timely diagnosis and effective measures can mitigate its effects.

Symptom Analysis

On Wild celery, main symptoms of Dark blotch include circular or irregular dark blotches on leaves and stalks, yellowing, wilting, and eventually death of the plant. The infected parts display premature decay and often show unusual growth deformities.
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What Causes Dark blotch Disease on Wild celery?

Fungus
Dark blotch is caused by the fungal species Pleospora herbarum, a necrotrophic fungus that thrives in moist environments and directly attacks the plant tissues causing rotting and deterioration.
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How to Treat Dark blotch Disease on Wild celery?

Non pesticide
Removal of infected plants: Removal and disposal of diseased plants from the growing area can minimize the spread of the disease.

Proper spacing: Ensure sufficient spacing between plants to reduce humidity and enhance air circulation, hindering fungal growth.
Pesticide
Fungicidal sprays: Regular application of appropriate fungicidal sprays can control the spread of fungal spores, reducing the infection rate.

How to Prevent Dark blotch on Wild celery?

Crop rotation
Implement crop rotation and intercropping to interrupt the life cycle of the fungus, lowering its prevalence.
Use disease-resistant varieties
Planting disease-resistant varieties of Wild celery can be a practical preventative measure.
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When is Dark blotch Most Active Period on Wild celery?

Dark blotch is most active in humid and wet conditions, typically during the late spring and early summer. Increased moisture facilitates the fungal spores to multiply and infest the plant.

Infectivity

The disease is highly infectious as the fungal spores easily spread through wind, water, and contaminated tools, rapidly infesting other plants.

Lethality

The disease is moderately lethal to Wild celery. While it can cause significant damage and yield loss, timely and appropriate intervention can save the plants.

FAQs on Wild Celery

How does Dark blotch spread to Wild celery?
Dark blotch spreads when fungal spores come into contact with Wild celery either through wind, water, or contaminated gardening tools.
How can I identify Dark blotch on Wild celery?
Dark blotch is marked by dark, irregularly shaped spots on leaves and stalks, yellowing, wilting, and lifeless appearance of the plant.
What are non-pesticide ways to treat Dark blotch on Wild celery?
Non-pesticide methods include removal and disposal of infected parts, proper plant spacing, and promoting good ventilation.
Which pesticides are effective against Dark blotch?
Fungicidal sprays containing active ingredients like Mancozeb or Propineb are often used to control Dark blotch.
Is Dark blotch lethal to Wild celery?
Dark blotch is moderately lethal to Wild celery and can cause significant damage, but with appropriate care, the plants can be saved.
How can I prevent Dark blotch on Wild celery?
Prevention measures include crop rotation, planting disease-resistant varieties, ensuring proper plant spacing and ventilation, and regular checking for early symptom identification.
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