Broad Bean with Anthracnose: Prevention & Cure

Vicia faba

Susceptibility: Moderate Severity: High Difficulty: Easy

Anthracnose on Broad Bean: What to Know?

Anthracnose on Broad Bean (Vicia faba) is a fungal condition with high severity. Broad Bean has moderate susceptibility to this disease. Anthracnose is a fungal disease caused by fungi in the genus Colletotrichum that affects many plants, including vegetables, fruits, and trees. The disease thrives in cool, wet conditions, causing dark...

Broad Bean is a easy-care plant. Recovery from Anthracnose takes approximately 14 days with proper treatment.

Unlike bacterial infections, Anthracnose on Broad Bean can be managed with organic fungicides.

🔍 What Does Anthracnose Look Like on Broad Bean?

• Small irregular yellow or brown spots on leaves
• Dark sunken lesions on leaves, stems, flowers and fruits
• Water-soaked lesions that darken as they age
• Pink gelatinous masses of spores in lesion centers during warm, moist weather
• Spots that expand and may cover entire leaves
• Defoliation in advanced stages

❓ What Causes Anthracnose on Broad Bean?

→ Caused by fungi in the genus Colletotrichum
→ Cool wet weather promotes development
→ Optimum temperature between 75-85°F (24-29°C)
→ Foliage wet for extended periods of time
→ Fungi overwinter in seeds, soil and garden debris
→ Spores spread through water droplets

💊 How to Treat Anthracnose on Broad Bean?

TLDR: Treat Anthracnose on Broad Bean with quick treatment (~7 days) or organic (~14 days). Broad Bean has moderate susceptibility to this disease.

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Quick Fixes

Remove and discard all visibly infected parts

Apply commercial systemic fungicide (azoxystrobin or mancozeb)

Adjust irrigation to avoid wetting foliage

Second application of systemic fungicide

Assess treatment effectiveness

🌿

Organic Treatment

Remove all infected plant parts and discard in plastic bag

Apply organic liquid copper spray to all plant surfaces

Switch irrigation regime to drip, avoiding foliage wetting

Second application of copper fungicide or neem oil

Assess progress and remove any new lesions

Final organic fungicide application and ongoing monitoring

🛡️ How to Prevent Anthracnose on Broad Bean?

TLDR: Prevent Anthracnose on Broad Bean with 8 essential preventive care practices.

✓ Implement drip irrigation instead of overhead watering
✓ Give plants enough room to breathe and reduce humidity
✓ Remove infected plant material after harvest
✓ Practice crop rotation between hosts and non-hosts
✓ Choose resistant plant varieties when possible
✓ Use western grown seeds not exposed to the disease
✓ Avoid wetting foliage during watering
✓ Ensure good air circulation around plants

🌱 How to Care for Broad Bean to Prevent Anthracnose?

💧 How to Water

Water just before the soil dries out but do not overwater. Keep the soil moist during flowering and pod development.

☀️ Lighting

Grow in full sun.

🪴 Ideal Soil

Prefers rich, well-drained loam but also tolerates clay and even saline soils.

Frequently asked questions

Can Anthracnose kill my Broad Bean?

Yes, without treatment, Anthracnose can be fatal to Broad Bean. Early detection and treatment are key.

How long does Broad Bean take to recover from Anthracnose?

With proper treatment, recovery takes approximately 14 days. Without treatment, it can take significantly longer.

Is Anthracnose contagious to other plants near Broad Bean?

Yes, Anthracnose can spread to nearby plants. Isolate the affected Broad Bean immediately.

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