Plastic film watermelon timely prevent premature aging
1. When the watermelons have grown large, apply 30 kg of urea and 10 kg of potassium dihydrogen phosphate per mu as a base fertilizer. After that, you can top-dress the plants once or spray them 2-3 times depending on their growth condition. A mixture of urea and potassium dihydrogen phosphate can be used for these additional applications to ensure optimal nutrient supply.
2. Remove the first set of fruits promptly after they appear, and leave the second or third ones. Avoid letting the plant produce too many small fruits, which can lead to early aging and reduce fruit quality. This practice helps the plant focus its energy on producing larger, healthier watermelons.
3. Maintain consistent soil moisture by watering in the early morning and late evening when temperatures are lower. To reduce evaporation, cover the root area with wheat straw, leaves, or weeds. Once the watermelon starts to set, press down the soil around the plant under the mulch to form a small basin. This allows rainwater to collect near the roots through the hole in the mulch, ensuring the watermelon gets enough moisture. You can also use high-efficiency drought repellents and water-retaining agents to further improve moisture retention.
4. Early disease prevention is crucial. Based on local conditions, watermelons are prone to various diseases. It's best to spray preventive treatments before or at the early stage of infection. For watermelon blight, you can use mancozeb diluted 600 times, Amistar at 1500 times, or Antiviral at 500–700 times. For anthracnose, try World High at 800–1200 times, Miconazole at 600–750 times, or 50% Carbendazim at 500 times. For Fusarium wilt, apply 70% Tetrachlorvinphos diluted 800–1000 times (250 ml per plant), or mix 10 g of Tetrachlorvinphos powder with 200 g of flour and make a paste to apply at the base. You can also use Shile solution at 800 times or Sclerotium Net at 400 times for irrigation. For virus diseases, spray Akte at 3000–5000 times during the growth stage to control aphids and prevent transmission. At the onset of symptoms, apply A500 virus treatment to manage the infection effectively.
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