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Common chicory > Brown blotch
Why is My Common chicory Developing Brown Spots?
Common chicory, also known as Wild succory, Blue dandelion
Brown spot is a fungal disease that can significantly affect Common chicory. It leads to reduced plant vigor, lower yields, and compromised quality. The disease is characterized by brown, irregular spots on leaves and is best controlled through cultural practices and careful use of fungicides.

Symptom Analysis

The main symptoms for Brown spot in Common chicory include the formation of brown, irregular shaped spots on the leaves. Over time, the spots may grow larger and become more pronounced, leading to potential leaf drop.
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What Causes Brown blotch Disease on Common chicory?

Fungus
The disease is caused primarily by the fungus Cochliobolus miyabeanus, which thrives in warmer, humid climates and infects the leaves of the plants.
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How to Treat Brown blotch Disease on Common chicory?

Non pesticide
Remove infected material: Immediately remove and destroy infected plant parts or severely affected plants to reduce the source of inoculation.

Enhance air circulation: Ensure adequate plant spacing and prune regularly to increase air movement and thus reduce disease incidence.
Pesticide
Fungicide use: Apply suitable fungicides when the disease is prevalent, as per the manufacturer's guidelines, making sure to rotate different active ingredients to avoid resistance.

How to Prevent Brown blotch on Common chicory?

Use disease-free planting materials
Ensure to use disease-free plants or seeds to prevent the initial introduction of the disease.
Crop rotation
Practice crop rotation with non-host crops to interrupt the disease cycle.
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When is Brown blotch Most Active Period on Common chicory?

Brown spot is most active during periods of warm, wet weather, typically late spring through to summer, when conditions are conducive for the spores to germinate and infect the Common chicory.

Infectivity

Brown spot is highly infectious as the spores can be splash-dispersed via rain or irrigation water to other parts of the same plant or neighboring plants.

Lethality

The disease can be lethal for Common chicory causing severe defoliation and weak plants, which can lead to significant yield loss.

FAQs on Common Chicory

What is brown spot and how does it affect Common chicory?
Brown spot is a fungal disease caused by Cochliobolus miyabeanus. It affects Common chicory by causing brown, irregular spots on leaves leading to reduced plant vigor, lower yields, and compromised quality.
When is brown spot most likely to infect Common chicory?
Brown spot is most likely to infect during warm, wet conditions, typically late spring through to summer.
How can I cure my Common chicory if it's infected with brown spot?
Immediately remove and destroy infected plant parts or plants, ensure good air circulation, and apply suitable fungicides if the disease is prevalent.
Is brown spot infectious and lethal to Common chicory?
Yes. Brown spot is highly infectious and can be moderately lethal, leading to potentially significant yield loss.
How can I prevent brown spot from infecting Common chicory?
Prevent brown spot by using disease-free planting materials, ensuring good air circulation, and practicing crop rotation with non-host crops.
Can brown spot be cured with pesticides?
Yes, brown spot can be managed using suitable fungicides, but it is important to rotate different active ingredients to prevent resistance to a single fungicide.
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