First, after the survival of a high graft in spring, new shoots often sprout from latent buds on various parts of the apple tree, especially those that have been grafted from the original head. This can significantly hinder the growth of the new shoots that are supposed to replace the old head. To ensure better development, it's important to remove these competing shoots early on, which helps direct energy toward the desired new growth. Second, once the grafted apple tree has survived, it's crucial to timely loosen the ties around the grafting site as the new shoots grow rapidly. If the ties are left on too long, they may constrict the graft area and restrict the healthy development of the new branches. Therefore, the ties should be removed only after the graft has fully healed to avoid any damage. Third, once the apple tree starts forming properly, the new shoots grow vigorously due to the strong root system of the rootstock. Pruning at the right locations can encourage more lateral branching, which helps the tree develop a well-balanced structure earlier. This not only improves the overall shape but also lays a solid foundation for future high yields. Fourth, after the graft has taken, the new shoots are tender and less lignified, making them vulnerable to wind damage. To prevent breakage, it's common practice to tie the new shoots to wooden stakes for support. In late May, the back branches can be twisted to improve their angle and promote better fruiting. It’s recommended that the annual tip growth of the apple tree be kept at 6–7 inches. By August, litchi (a type of pruning technique) can be applied to stimulate flowering. Litchi begins about 5 cm from the base of the shoot and gradually moves upward, with 2–3 buds being pinched each time until the branch reaches a 90-degree angle. The intensity of litchi decreases over time, helping the tree develop a more compact and productive structure. Fifth, after the graft has successfully taken, proper fertilization and irrigation become essential. Fertilizer management should be intensified, especially through top-dressing. Typically, within 5–7 years after the graft, the original canopy size of the apple tree can be largely restored, leading to a healthier and more productive tree. Sixth, pest and disease control becomes even more critical after the graft has survived. The concentration of new shoots makes the tree more susceptible to pests and diseases, particularly in spring when issues like aphids and stem blight are more prevalent. Regular monitoring and timely intervention are necessary to protect the tree and ensure its long-term health.
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