What are the latest control methods for common pumpkin diseases?
Pumpkin is one of our common crops. It has strong adaptability and disease resistance, and is relatively little affected by pests and diseases. However, with the development of a series of its products, its planting area has also been promoted to a certain extent. This has also provided favorable conditions for the occurrence of diseases, and diseases occur more frequently year after year. Below, Qinnong.com brings several common pumpkin disease control methods. Let's learn about them together.
1. Pumpkin blight
Blight mainly harms pumpkin seedlings, stems, leaves and fruits. In the early stage of the disease, brown lesions appear on the diseased parts. When the air humidity is high, it spreads rapidly, forming water-soaked soft rot areas, and white mold-like substances appear around the diseased parts, eventually causing the fruits to wither and rot or the plants to rot and die.
Control methods: Choose to plant in areas with higher terrain, loose soil and good drainage, preferably in rotation with wheat or corn. This disease is mainly controlled by prevention methods. Before planting, disinfect and sterilize the seeds and soil, strengthen management at ordinary times, and control temperature and humidity.
2. Pumpkin powdery mildew
Powdery mildew mainly harms the stems and leaves of pumpkin. In the early stage of the disease, small white spots appear on the leaves and slowly spread. The lesions gradually expand, and finally a layer of white powder covers the lesions, causing the leaves to turn yellow and die.
Control methods: Choose varieties with strong growth and strong disease resistance, strengthen fertilizer and water management, and enhance the disease resistance of the plants. Before planting, still carry out disinfection treatment to isolate infection by pathogens. In the early stage of the disease, carbendazim wettable powder or chlorothalonil can be sprayed for control.
3. Pumpkin anthracnose
Anthracnose mainly harms leaves and fruits. When leaves are affected, water-soaked lesions appear, which then spread into large brown lesions. Under high temperature and high humidity, pink sticky substances appear on the lesions. When fruits are infected, water-soaked lesions also appear and gradually expand, and finally the diseased areas turn black and rot.
Control methods: Use thiram wettable powder for seed dressing and disinfection to eliminate pathogens carried on the seed coat. It is recommended to rotate with crops such as corn and wheat to reduce the occurrence of the disease. When the disease occurs, spray with chlorothalonil wettable powder or mancozeb once every other week, and it can be cured after 2-3 consecutive times.
4. Pumpkin downy mildew
Downy mildew is one of the main diseases of pumpkin and mainly harms leaves. When the disease occurs, water-soaked yellow spots appear on the leaves and gradually spread, finally causing the leaves to form yellow-brown irregular polygonal lesions. In a humid environment, gray-black mold layers grow on the lesions. When the disease is severe, the entire planting area turns withered and yellow.
Control methods: Downy mildew is mainly prevented. Choose varieties with strong disease resistance. When planting, use carbendazim wettable powder for seed dressing and disinfection treatment, strengthen field management, and enhance the disease resistance of the plants. Strictly control temperature, strengthen ventilation conditions, and use chemicals such as chlorothalonil and carbendazim for spraying as chemical control.
The above are the common pumpkin disease control methods brought by Qinnong.com. The introduction to pumpkin diseases ends here. For more agriculture-related knowledge, please follow Qinnong.com. We will certainly not disappoint you.