Fungal attacks in onion crops can cause significant damage and reduce yields. In addition, fungal infections can spread rapidly and affect neighboring plants. Therefore, it’s crucial to take preventative measures and control measures to minimize the risk of fungal infections.
Here are some effective ways to control fungal attack in onion crops:
1. Crop Rotation: Crop rotation is a crucial aspect of preventing fungal infections in onion crops. Consider rotating onion plants with legumes, cereal crops or non-solanaceous vegetables to break the disease cycle.
2. Soil preparation: Ensure the soil is well-drained, well-aerated and has the right pH. Onions require a pH range of 6.0 to 6.8, and soil tests can help you get a better idea of what your soil needs. Add compost and organic matter to the soil to improve structure and fertility.
3. Seed treatment: Treating the seed with a systemic fungicide helps to protect the young onion seedlings from fungal infections. You can use products like carbendazim, thiuram, or thiram to treat onion seed.
4. Fungicides: In-season treatment with fungicides can help control and prevent fungal attacks in onion crops. Select a fungicide based on its effectiveness against the particular pathogen and follow the recommended application rate.
5. Water management: Excess moisture is a common cause of fungal infections in onions. Avoid over-watering and ensure proper drainage. In addition, irrigate the crop early in the morning to prevent leaf wetting and minimize the risk of fungal infections.
6. Remove infected plant parts: Regularly scout your onion crop for signs of fungal infection. Remove and destroy infected plant parts and maintain proper sanitation to prevent the spread of fungal infections.
In conclusion, onion farmers must practice good crop management to minimize the risk of fungal infections. Crop rotation, soil preparation, seed treatment, fungicides, water management, and plant sanitation are crucial practices to take preventive and control measures against fungal infections.