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Peach > Shot hole disease
What is 'Shot Hole Disease' in Peach Trees?
Peach, also known as Peach
Shot Hole disease, caused by a fungal pathogen 'Wilsonomyces carpophilus', is prevalent in Peach. Affecting leaves, fruits, and twigs, the disease manifests as small, round holes, giving a 'shot' appearance. Severe infestations often lead to defoliation and loss of crop yield.

Symptom Analysis

On Peach, symptoms appear as reddish-purple spots, later turning into holes in the leaves. Infected twigs show gumming and dieback. Fruits develop brown pit lesions.
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What Causes Shot hole disease Disease on Peach?

Pathogen
Wilsonomyces carpophilus, a fungus that profits from damp, cool conditions, causes Shot Hole disease.
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How to Treat Shot hole disease Disease on Peach?

Non pesticide
Pruning infected parts: Measures should be taken to prune and destroy infected plant parts.

Proper spacing: To ensure good air circulation and reduce humidity levels - an environment less conducive for fungi.
Pesticide
Fungicidal Spray: Treatments with a registered fungicide can help control the disease especially during damp weather.

How to Prevent Shot hole disease on Peach?

Disease-resistant varieties
Choosing disease-resistant Peach varieties can significantly reduce the disease risk.
Crop sanitation
Regularly removing fallen leaves and debris minimizes the overwintering sites for the fungus.
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When is Shot hole disease Most Active Period on Peach?

The disease is most active during cool, damp weather - typically in the spring and fall. These conditions favor fungal spore germination and disease spread.

Infectivity

Shot hole disease spreads rapidly between Peach plants, particularly in favorable environmental conditions.

Lethality

While the disease can cause serious defoliation and crop loss, it rarely kills the Peach if appropriate control measures are applied.

FAQs on Peach

Does Shot Hole disease affect all Peach plants equally?
Although all Peach plants could potentially be affected, some varieties may exhibit more resilience towards the disease than others.
Can Shot Hole disease spread from an infected Peach to other plant species?
Shot Hole disease, specifically from the fungus Wilsonomyces carpophilus, primarily targets stone fruit trees including Peach. However, it's always recommended to isolate sick plants to minimize possible spread.
Do fungicidal sprays have any negative impact on Peach?
While some Peach may experience mild phytotoxicity, when used as directed, registered fungicides are generally safe and beneficial in controlling Shot Hole disease.
Can Peach recover naturally from Shot Hole disease without intervention?
While Peach can show some natural resistance, without treatment, the disease can continue to spread, causing defoliation and potentially serious damage to the crop yield.
How often should fungicide be applied on Peach for Shot Hole disease?
Application frequency can depend on several factors including the severity of infection, climate, and the specific product used. Always follow the manufacturer's instructions for best results.
Does Shot Hole disease affect the quality or safety of the Peach fruit for consumption?
While the disease can cause aesthetic damage to the fruit, the fruit itself remains safe for consumption unless rotted by secondary infections.
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