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Control of fungal attack in coriander crop

Title: Controlling Fungal Attacks in Coriander Crops: A Comprehensive Guide

Coriander (Coriandrum sativum), a popular herb used in culinary and medicinal applications worldwide, is vulnerable to various fungal attacks. Fungal diseases can significantly impact the yield, quality, and economic viability of coriander cultivation. This article aims to shed light on the common fungal diseases affecting coriander crops and provide effective control measures to protect and maintain healthy coriander plants.

Common Fungal Diseases in Coriander Crops:
1. Damping-off: Damping-off is a seed and seedling disease caused by several fungal pathogens present in the soil. It often leads to the rotting of seeds, resulting in the death of young seedlings before or after emergence. High soil moisture levels and poor drainage exacerbate this problem.

2. Powdery mildew: Powdery mildew is a fungal disease caused by various species of Erysiphe, Leveillula, and Oidium. It appears as powdery white or gray patches on leaf surfaces, stems, and flowers. Severe infections can stunt growth and reduce spice and seed production.

3. Leaf spot: Leaf spot diseases, caused by fungi such as Alternaria, Cercospora, and Septoria, lead to the appearance of circular or irregular dark spots on coriander leaves. If left uncontrolled, leaf spots can reduce photosynthesis, weaken plants, and affect overall productivity.

Control Measures:
1. Crop Rotation: Practicing crop rotation is vital in reducing the risk of fungal attacks. Avoid planting coriander in the same area year after year, as this increases the chance of disease recurrence. Rotate coriander with unrelated crops to break the disease cycles and suppress fungal spore buildup in the soil.

2. Seed Treatment: Prior to sowing, treat the coriander seeds with an appropriate fungicide or biocontrol agents to inhibit the growth of damping-off-causing fungi. Use quality seeds from reliable sources and ensure they are not infected or damaged.

3. Proper Irrigation and Drainage: Optimal irrigation practices play a crucial role in preventing fungal diseases. Avoid overwatering, as excessively moist conditions favor the spread of soil-borne pathogens. Ensure good drainage to minimize standing water and minimize the risk of seedling rot.

4. Sanitation: Regularly remove and destroy diseased plant debris, fallen leaves, and weed hosts. This practice helps to reduce the fungal inoculum and prevent the spread of diseases within the crop. Maintaining a clean growing environment is essential for disease management.

5. Fungicides and Biological Control: In severe cases, where fungal diseases persist despite preventive measures, the judicious use of registered fungicides may be necessary. Consult with local agricultural extension services or experts to identify appropriate fungicides and ensure their safe and responsible application. Alternatively, explore biological control options such as biofungicides or microbial inoculants to reduce fungal populations.

6. Resistant Varieties: When available, consider planting coriander varieties that are resistant or tolerant to specific fungal pathogens. These varieties have been specifically bred to withstand or limit the impact of certain diseases, providing an additional line of defense.

Controlling fungal attacks in coriander crops requires a holistic approach involving preventive measures, proper cultural practices, and timely intervention when necessary. By implementing crop rotation, seed treatment, irrigation management, sanitation, and, if required, targeted fungicide use, farmers can effectively manage fungal diseases and safeguard the health and productivity of their coriander crops. Remember, continuous monitoring and early detection are vital for successful disease management.

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