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Three methods cleverly catch sweet potato big fertilizer
For the top hole dressing method, use a wooden pestle to create small holes near the main root of the sweet potato plant. Drill holes approximately 20 to 30 centimeters away from the main root, and make them about 30 centimeters deep. After drilling, add an appropriate amount of compound fertilizer into each hole and cover it with wet soil. For better results, drill holes on both sides of the ridge. This technique can boost yield by around 20% per mu, making it a highly effective way to enhance growth.
When the sweet potato tubers start to expand and cracks appear on the surface of the soil, it's time to apply foliar or root-based fertilization. One effective approach is to mix 500 grams of potassium dihydrogen phosphate with 400 kilograms of water per acre, or alternatively, combine 2.5 kilograms of urea with 10 kilograms of superphosphate in 500 kilograms of water. Apply this solution directly into the cracks. Additionally, irrigate with 0.7 to 1 kg of water per area. After 15 days, prepare a solution by soaking 100 kilograms of wood ash in 500 kilograms of water for 4 hours. Strain the mixture and use the supernatant to fill the cracks again, then cover them with soil. This advanced technique can increase yields by over 300 kilograms per mu, significantly improving overall productivity.
Another effective method is foliar feeding. Spray a 0.3% solution of potassium dihydrogen phosphate onto the leaves of the sweet potato plants. Repeat this process once every seven days. This method not only supports healthy leaf development but also enhances tuber growth, leading to a yield increase of 18% to 20% per mu. It’s a simple yet powerful way to ensure the plants receive essential nutrients directly through their foliage.
These methods are commonly used by farmers to optimize sweet potato production. By combining root feeding, crack filling, and foliar spraying, growers can maximize nutrient absorption and improve overall crop quality. Whether you're a small-scale farmer or managing a larger plot, these techniques offer practical and proven ways to boost your harvest. With proper timing and application, you'll see noticeable improvements in both yield and plant health.