To prevent the death of watermelons in summer

September 22 03:13:09, 2025

As the rainy season has officially begun, watermelon cultivation during the summer months is entering a critical and challenging phase. This period is particularly risky for watermelon crops, as they are highly susceptible to a condition commonly referred to as "death" in production. It's crucial for farmers to stay alert and prioritize preventive measures to avoid significant losses. One of the main threats during this time is a bacterial disease known as "watermelon dead cockroach," which affects both seedlings and mature plants. The disease spreads rapidly under high humidity and warm conditions, especially during the late growth stage of the watermelon. With the early and prolonged rainy season, the risk of infection increases significantly. The disease often peaks shortly after heavy rainfall, and its occurrence can range from 5°C to 37°C, making it a widespread concern. Symptoms of the disease typically start on the leaves, where dark green, round or irregular-shaped water-soaked spots appear. In humid conditions, these spots may look as if they’ve been scalded by hot water, while in drier weather, they turn light brown and become brittle. The base of the vines may develop spindle-shaped, water-soaked, dark green lesions that eventually cause the stem to rot completely, leading to plant death. On the fruit, dark green, circular, sunken spots appear and quickly spread, causing the entire fruit to rot, emit a foul silage-like odor, and develop dense fungal mycelium on the surface. To manage the disease effectively, it's essential to take action at the earliest signs. Farmers can use fungicides such as 50% mancozeb wettable powder diluted at 700–800 times, 72.2% propineb at 800 times, or 64% triazole-based fungicide at 500 times. Spraying should be done 3–4 times over a 10-day period, with applications made once daily. For more severe cases, the same solutions can also be used for root irrigation, applying 0.4–0.5 liters per plant. Combining foliar spraying with root irrigation can significantly improve the effectiveness of treatment. By staying proactive and following these guidelines, watermelon farmers can reduce the impact of this disease and protect their crops during the vulnerable rainy season.

Viral Transportation Medium Tube

Uses: used for the detection and sampling of influenza, hand, mouth, foot and other epidemic diseases
Inspection principle:
The combination of multiple antibiotics has broad-spectrum antibacterial and antifungal effects;
As a protein stabilizer, bovine serum albumin can increase the survival time and infection stability of the virus;
Buffers such as Hank's build a neutral environment, which helps to increase the survival time and infection stability of the virus;
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Steps:
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2. Place the swab after collecting the sample into a sterile sampling tube.
3. Break the sampling swab rod that is higher than the sterile sampling tube.
4. Tighten the cap of the sterile sampling tube.
5. Label the sterile sampling tube with information as required.

For sample collection, transportation and storage.
Product advantages:
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3. Product instruction manual, product certificate
Product Details:
1. The product set includes a one-time Virus Sampling Tube (including preservation solution), a self-sealing bag, a sampling swab, and instructions.
2. Product specification: 100 sets/box, 8 boxes/box 3. Product weight: 0. 65kg/box, 13. 2kg/box
4. Packing size: 25. 5*23. 5*14. 5 boxes, 53*49*32/carton
Scope of application:
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Features:
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2. Pre-packaged guanidine salt lysate can inactivate the new coronavirus, ensuring the safety of transportation and testing personnel 3. The large-capacity preservation solution can fully soak the swab head,
The sample size can be divided into three parts for testing and reserve samples respectively to meet the testing needs.
Scope of application:
Suspected cases, disease control testing, preferred by P3 laboratory


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