Wangshu, also known as "overgrown trees," typically result from excessive pruning, strong retraction, high water content in the fruit, untimely branch pulling, small angles between main branches, and insufficient fruit load. The symptoms include a large number of shoots on the tree, long autumn shoots, and hard branches. Vegetative growth is more vigorous than reproductive growth, making it difficult for flower buds to form. Leaves are larger, and fruits tend to be smaller. To address this, it's important to control fertilizer and water, especially reducing nitrogen input. Remove dense or migrating branches, open up the angle of the main branches, and eliminate large branches when necessary. Use techniques like grafting, branch pulling, bud scoring, ring barking, and spraying Floret to balance growth and encourage flowering. It’s also advisable to leave as many fruits as possible and use them to press down the crown.
Arrogant trees, or "prolific trees," are even more vigorous than Wangshu trees. They are commonly found in orchards and require different management strategies. These trees have an excessive number of shoots, with annual branches often exceeding 2 meters in length. There are no flowers or fruits, and the branches are thick with large leaves. Controlling these trees is challenging and usually requires a combination of methods. Strict control over fertilization and irrigation is essential—sometimes even no fertilizer or water at all. In severe cases, root cutting or girdling may be necessary. Pull the main branches apart, and for thicker branches, use the "three-saw" technique. Before spring budding, remove some large branches. In September, cut back some leaves and large branches. Techniques such as branch splitting, bending, pruning, and spraying Floret can help disperse growth and promote flowering.
Strong and weak trees are common in orchards, often caused by rapid head growth, improper branch angles, or incorrect pruning. The upper branches grow vigorously, producing many shoots, while the lower branches struggle. The upper part has thick branches, large leaves, and takes up most of the light and heat, making it difficult to flower. The lower branches are weak, receive poor light, and are prone to pests and diseases. To manage this, focus on balancing the growth: remove dense vertical branches, trim large branches, open up the main branch angles, and pull down some annual and fruit-bearing branches from the base. For the lower branches, prune and rejuvenate long main branches, and in some cases, remove the main branch entirely, making sure to saw at an angle and treat the wound. If the main branch angle is too wide, use supports to lift it. Overall, improve fertilizer and water management and ensure good pest control.
Weak and declining trees, often called "neck-breaking trees," have excessive growth at the base, with some main branches extending beyond the central trunk. The upper branches show weak growth. The main issue lies in the lower part. To fix this, remove 1–2 lower main branches, open their angles, and eliminate overly dense or large branches. Use techniques like branch pulling, transferring branches, and ring cutting to encourage flowering on the lower branches. In some cases, remove the top of the lower branches and upper parts to reshape the tree into a more balanced form. After transformation, increase fertilizer application and maintain strict pest control.
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