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After fruit bagging, timely application of strong fruit fertilizer
Fruit bagging significantly enhances fruit coloration, resulting in a bright and attractive appearance with vibrant hues. This practice effectively prevents disease and pest infestations, reduces pesticide residues and dust pollution, and minimizes sunburn damage. As a result, the quality and marketability of the fruit improve, leading to higher economic returns.
Before bagging, it's recommended to apply a "melon and fruit booster" to strengthen the tree’s resistance, promote fruit development, and ensure optimal growth. Bagging should be done within two days after spraying. This is typically referred to as the "summer fertilizer," applied when fruits are entering their rapid growth phase. At this stage, seed development has slowed, and the flesh begins its fast expansion period. It’s also the second peak of root growth and the early stage of flower bud differentiation. All these processes require adequate nutrients to support fruit development, root growth, and proper flower bud formation. Applying the right fertilizer at this time ensures faster cell expansion, increases fruit number, promotes nutrient conversion, strengthens tree vigor, and encourages robust flower bud development. This top-dressing not only supports high yield and quality for the current season but also lays the foundation for stable and high-quality production in the following year.
Apple and pear trees have different nutrient requirements during the middle and later stages of growth. Potassium plays a crucial role in enhancing fruit size, improving color, and boosting overall quality. It also helps thicken branches, promote leaf growth, and increase photosynthetic efficiency by aiding in the synthesis and transport of carbohydrates. Therefore, the application of nitrogen (N), phosphorus (P), and potassium (K) must be balanced. For apples, the ideal ratio is 1.5:3.5:5, while for pears, it is 2:3:5.
It's best to use specialized fertilizers designed for apple or pear trees. Alternatively, you can mix urea, superphosphate, and potassium sulfate according to the recommended ratios. The amount of fertilizer applied depends on factors such as tree size, tree health, soil fertility, fruit load, and management practices. For an average tree producing 60-80 kg of fruit, applying 800-1000 grams of either commercial or homemade fertilizer per tree is generally sufficient. Larger trees require more, while smaller ones need less.
After applying the base fertilizer, foliar sprays can further enhance nutrient uptake. A mixture of potassium dihydrogen phosphate (diluted 300–350 times) and melon and fruit booster capsules can be sprayed every 7–10 days. This method provides additional nutrients, boosts photosynthesis, and ensures the fruit develops fully and remains rich in nutrients, delivering excellent results.