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Snake melon virus disease is one of the most significant threats to the cultivation of snake melons, greatly impacting both the quality and yield of the crop. Timely application of **pesticides** is crucial in managing this disease.
The symptoms appear during both the seedling and adult stages, with more severe infections occurring in mature plants. Affected leaves—especially those on the top—develop mottled patterns, uneven textures, and slight blistering. The leaves become smaller, distorted, and may show a slight curling. Infected fruits are often deformed, with faint spots near the stem area.
To prevent and control snake melon virus disease, several effective methods can be applied:
1. Start planting early, use simple covers, and avoid conditions that promote aphid infestations and high temperatures. Proper plant spacing is important to ensure good air circulation. After planting, water the roots promptly, and apply a diluted solution of new high-fat film (800 times) to reduce evaporation, maintain soil moisture, and protect against pests and diseases. This helps speed up the seedling stage and improves the plant's ability to adapt to new environments, promoting healthy growth.
2. Implement balanced fertilization and improve irrigation practices to grow strong, healthy plants. During the growth period, ensure timely watering, proper top-dressing, and regular pest control. Prune and support vines as needed, and spray squash during the pre-flowering, young fruit, and fruit expansion stages. This enhances pollen fertility, increases fruit set rates, promotes uniform development, reduces empty shells and sticky grains, and ultimately improves overall fruit quality, ensuring continuous production of high-quality snake melons.
3. For chemical control, remove and destroy any infected plants immediately. Follow local agricultural guidelines and use recommended solutions such as 7.5% bacteriostatic agents. According to **China’s pesticide network**, it is advisable to use a 500-fold dilution of morpholin (Kingling) or an 800-fold dilution of 3.85% ribavirin (Viral Kang) soluble powder for targeted treatment. When applying these chemicals, also spray the new high-fat film to enhance effectiveness and ensure long-term control of the disease.
By combining cultural, biological, and chemical methods, farmers can effectively manage snake melon virus disease and maintain a healthy, productive crop.