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Rare earth sprayed watermelon increased yield and sweetened
According to the experiment, watermelons treated with rare earth elements showed significant improvements. The fruit setting rate increased by 17% to 30%, yield rose by 15% to 30%, sugar content improved by 23%, and the ripening period was advanced by 3 to 7 days. These results highlight the effectiveness of rare earth in enhancing both the quality and productivity of watermelon crops.
1. **Spray Timing and Frequency**
There are three optimal periods for applying rare earth to watermelons: the early vine growth stage, the initial flowering phase, and the young fruit development stage. During the first two stages, the main goal is to boost fruit setting and increase overall yield. In the third stage, the focus shifts to improving fruit sweetness and sugar content. It's recommended to spray the plants 2 to 3 times during these critical growth phases for best results.
2. **Concentration and Dosage**
At the start of vine extension, use 25 ml of rare earth plant protection product per acre, diluted in 30 kg of water, or apply a 0.03% rare earth nitrate solution at the same volume. During the early flowering stage, increase the dosage to 50 ml per acre, mixed with 40-50 kg of water, or use a 0.05% nitrate solution. For the young fruit expansion phase, apply 75 ml of rare earth plant protection product in 50-60 kg of water, or use a 0.08% nitrate solution. The third-generation rare earth product, known as "rare earth animal-planting treasure," offers better absorption and utilization of rare earth elements, resulting in more effective outcomes compared to traditional nitrate-based solutions.
3. **Application Technique**
It's best to spray on cloudy days or in the late afternoon when sunlight is less intense to avoid leaf burn. Spraying should be done evenly, ensuring that both the upper and lower surfaces of the leaves are covered. If it rains within 24 hours after spraying, reapplication is necessary once the rain has stopped. Proper timing and technique are essential to maximize the benefits of rare earth application and ensure healthy, high-quality watermelon production.
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