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Why Does Stink currant Get Spotty Leaves?
Stink currant, also known as Californian blackcurrant
Spots, a fungal disease, causes distinctive lesions on the leaves and stems of Stink currant. The disease leads to reduced photosynthesis, weakening the plant and potentially affecting fruit production and overall plant vigor.

Symptom Analysis

On Stink currant, spots manifest as circular to irregular brown or black lesions on leaves and stems. Over time, these can coalesce, leading to greater leaf damage and even defoliation.
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What Causes Spots Disease on Stink currant?

Fungus
The primary cause is a fungal pathogen that thrives in warm, moist conditions.
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How to Treat Spots Disease on Stink currant?

Non pesticide
Pruning: Remove and destroy affected parts to reduce the spread of the fungal spores.

Improve air circulation: Space plants adequately and control weeds to enhance air flow and reduce humidity around plants.
Pesticide
Fungicide application: Apply approved fungicides early in the season to prevent severe infections. Follow label directions for best results.

How to Prevent Spots on Stink currant?

Cultural practices
Ensure proper spacing and weed management to improve air circulation and decrease humidity.
Regular monitoring
Inspect plants regularly for early signs of the disease and take immediate action.
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When is Spots Most Active Period on Stink currant?

Spots are most active during warm, wet spring months, as these conditions favor fungal growth and spread.

Infectivity

The fungus can spread quickly under favorable conditions but is generally manageble with good practices.

Lethality

While debilitating, it is rarely lethal if managed properly.

FAQs on Stink Currant

What are the first signs of spots on Stink currant?
Initial signs include small, dark speckles on leaves which evolve into larger lesions.
Can spots spread to other plants?
Yes, the spores can travel through air or water splash, affecting nearby susceptible plants.
Is it safe to eat fruits from a plant with spots?
Fruits from infected plants are usually safe to eat, though the overall fruit production may decrease.
How often should I apply fungicide to manage spots?
Apply as per the product's label, typically at the start of warm, humid weather to effectively control the disease.
Do natural weather conditions affect the spread or severity of spots?
Yes, prolonged wet and warm conditions can exacerbate the spread and severity of fungal spots.
What should I do with the debris from pruned infected leaves?
Infected plant debris should be collected and destroyed to prevent the disease from spreading.
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