Fungus Control in Bengal Gram Crop
Bengal gram, also known as chickpea or chana, is one of the most important pulse crops grown in India. It is a major source of protein for millions of people and also improves soil fertility by fixing nitrogen. However, fungal diseases are a serious problem in Bengal gram cultivation. They can damage plants at different stages and cause heavy yield losses if not managed properly. To grow a healthy and productive crop, farmers need to understand the common fungal problems and how to control them effectively.
1. Common Fungal Diseases in Bengal Gram
Several fungi can attack Bengal gram, but the most common and damaging ones are:
Fusarium Wilt: This is one of the most widespread diseases. It causes yellowing and drying of leaves, starting from the lower part of the plant. Infected plants wilt suddenly and die before maturity. When you cut the stem near the base, the inner tissue appears brown or black.
Ascochyta Blight (Blight Disease): This disease appears as small brown or black spots on leaves, stems, and pods. In severe cases, the spots merge and cause leaf drop. It spreads rapidly under cool and moist conditions.
Dry Root Rot: This disease is common in dry and warm weather. It causes the roots and lower stem to rot, and the plants dry up suddenly.
Rust: Orange or brown powdery pustules appear on leaves and stems. It affects the photosynthesis process and weakens the plants.
These diseases can appear singly or together, depending on the weather and field conditions.
2. Conditions Favoring Fungal Growth
Fungal diseases in Bengal gram are more common under:
High humidity and cloudy weather
Poorly drained or waterlogged fields
Continuous cultivation of Bengal gram in the same field
Use of infected seeds or crop residues
Understanding these conditions helps farmers take preventive measures before disease appears.
3. Preventive and Cultural Practices
Prevention is the best way to control fungal diseases. Farmers can follow these simple steps:
Crop Rotation: Avoid growing Bengal gram or other pulses repeatedly in the same field. Rotate with cereals like wheat, maize, or sorghum for 2–3 years.
Field Sanitation: Remove and burn infected plant residues after harvest to destroy fungal spores.
Use of Resistant Varieties: Choose high-yielding and disease-resistant varieties recommended for your region.
Seed Treatment: Always treat seeds before sowing with fungicides like carbendazim (2 g/kg seed) or thiram (3 g/kg seed) to protect against soil- and seed-borne fungi.
Proper Drainage: Ensure that the field has good drainage, as standing water promotes fungal infection.
4. Biological and Chemical Control
Biological Control: Use bio-agents like Trichoderma viride or Trichoderma harzianum as seed treatment or soil application. These beneficial fungi suppress harmful pathogens in the soil.
Fungicide Sprays:
For Ascochyta blight and rust, spray mancozeb (0.25%), chlorothalonil (0.2%), or carbendazim (0.1%) at the first sign of disease.
Repeat spraying every 10–15 days if the weather remains favorable for disease spread.
For wilt and root rot, apply Trichoderma or mix carbendazim in irrigation water around the root zone.
5. Integrated Disease Management (IDM)
The most effective approach to control fungal diseases is through Integrated Disease Management (IDM), which combines all available methods—resistant varieties, clean cultivation, seed treatment, bio-control, and timely fungicide application. This approach minimizes crop loss and keeps the soil healthy.
Conclusion
Fungal diseases in Bengal gram can greatly affect both yield and grain quality. But with timely prevention and proper management, farmers can easily control them. By following a combination of seed treatment, crop rotation, good field hygiene, and need-based fungicide sprays, farmers can protect their Bengal gram crop from fungal attacks and ensure a healthy, profitable harvest.
