Pea (matar) is an important winter crop grown across many parts of India. It is valued for fresh pods, grains, and fodder. However, peas are quite sensitive to fungal diseases, especially during cool and humid conditions. If not managed in time, fungal infections can reduce plant growth, damage pods, and lower yield. Farmers can protect their pea crops by understanding the main diseases, identifying early symptoms, and using the right management practices.
1. Common Fungal Diseases in Pea
a. Powdery Mildew
A very common disease in peas, powdery mildew appears as white powdery spots on leaves, stems, and pods. It spreads quickly during dry days and cool nights.
b. Downy Mildew
This appears as yellow patches on the upper leaf surface and greyish fungus on the underside. It spreads during wet and humid conditions.
c. Rust
Rust causes reddish or brown pustules on leaves and stems. It affects plant vigor and reduces pod filling.
d. Root Rot and Wilt
These diseases attack the roots and base of the stem. Plants suddenly wilt and dry, especially in poorly drained soils.
2. Cultural Practices to Reduce Fungal Diseases
Good field practices form the first line of defense.
a. Crop Rotation
Avoid growing peas in the same field every year. Rotate with cereals or non-legume crops to reduce fungal spores in the soil.
b. Use Disease-Free Seeds
Certified seeds reduce the chance of seed-borne fungal infections. Seed treatment before sowing protects plants during early growth.
c. Proper Spacing
Do not sow very closely. Adequate spacing improves airflow and reduces moisture around plants, discouraging fungal growth.
d. Field Sanitation
Remove old crop residue and infected plant parts before the next season. Fungal pathogens survive in leftover debris.
e. Balanced Fertilization
Excess nitrogen makes plants more prone to disease. Use a balanced dose of NPK fertilizers for strong and healthy growth.
3. Irrigation and Environment Management
a. Avoid Overwatering
Waterlogged soil encourages root rot and downy mildew. Peas need light but timely irrigation, especially at flowering and pod formation stages.
b. Morning Irrigation
Irrigate in the morning so leaves dry quickly during the day, reducing fungal spread.
c. Good Drainage
Ensure the field has proper drainage, especially in heavy soils.
4. Biological and Organic Methods
a. Neem-Based Sprays
Neem oil or neem seed extract reduces early fungal development and acts as a preventive measure.
b. Trichoderma
Applying Trichoderma in soil at sowing time helps suppress soil-borne fungal pathogens naturally.
5. Chemical Control Measures
When fungal disease pressure is high, timely spraying of fungicides becomes necessary.
a. For Powdery Mildew
Spraying recommended fungicides at early stages controls the disease effectively.
b. For Downy Mildew and Rust
Preventive sprays at 10–12 day intervals during humid weather help check the spread.
c. For Root Rot and Wilt
Seed treatment with fungicides and soil application reduce soil-borne infections.
Always follow recommended dose, spray volume, and safety instructions.
Conclusion
Fungal diseases in peas can be managed effectively with a combination of cultural practices, good field hygiene, balanced nutrition, proper irrigation, and timely spraying. Early detection is key—farmers who monitor their fields regularly can control diseases before they spread. With these steps, pea growers can ensure healthy plants, better pod development, and higher yields.
