Plastic film watermelon timely prevent premature aging
1. When the watermelons have grown to a large size, apply 30 kg of urea per mu and 10 kg of potassium dihydrogen phosphate 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 also be used for foliar feeding to ensure balanced nutrition and promote healthy development.
2. It's important to remove the first set of fruits promptly after they appear, allowing the second or third fruits to develop instead. Avoid leaving too many small fruits on the vine, as this can lead to premature aging and reduce overall yield and quality. Pruning excess shoots and ensuring proper fruit spacing will help improve air circulation and sunlight exposure.
3. Maintain consistent soil moisture, especially during the early morning and late evening when temperatures are lower. To reduce evaporation, cover the root zone with straw, leaves, or weeds. Once the watermelon starts setting fruit, press the soil around the base of the plant under the mulch to form a small basin. This helps collect rainwater and direct it toward the roots. You can also use efficient drought-resistant agents and water-retaining materials to enhance moisture retention in the soil.
4. Early prevention of diseases is crucial. Based on local conditions and common watermelon diseases, apply targeted fungicides before or at the first sign of infection. For watermelon blight, you can use mancozeb diluted at 600 times, Amistar at 1500 times, or antiviral agent at 500-700 times. For anthracnose, try 800-1200 times of "World High", 600-750 times of miconazole, or 50% carbendazim at 500 times. For Fusarium wilt, apply 70% enemy cough (diluted 800-1000 times) at 250 ml per plant, or mix 10 g of enemy pine powder with 200 g of flour and water to make a paste, applying it directly to the base of the plant. You can also use Shile solution at 800 times or Sclerotium Net at 400 times. For virus disease, spray Akte at 3000-5000 times during the growing season to control aphids, which are the main vectors. At the early stage of infection, use A500 times virus treatment to manage symptoms effectively.
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