How to remedy and manage apple trees after frost damage?
What should be done after apple trees are frost-damaged? Experienced netizens are asked to help explain. Frost damage has always been a common factor in fruit tree damage, and this is even more true for apple trees. Moreover, apple trees are perennial plants, so once frost damage occurs, its effects are lasting. A series of rot diseases caused by frost damage also gives fruit growers quite a headache...
What should be done after apple trees are frost-damaged? Experienced netizens are asked to help explain.Frost damage has always been a common factor in fruit tree damage, and this is even more true for apple trees. Moreover, apple trees are perennial plants, so once frost damage occurs, its effects are lasting. A series of rot diseases caused by frost damage also gives fruit growers quite a headache. Therefore, Zhongdiwang has compiled treatment methods for apple trees after frost damage, listed below for netizens' reference.
I. For apple trees whose trunks are entirely frost-damaged but whose root systems are intact, the aboveground parts can be sawed off flush with the ground. In March to April of the following year, graft again using the cleft grafting or bark grafting method. If the trunk of a young tree is frost-damaged, it can be cut back flat to resprout, leaving one vigorous shoot to rebuild the tree structure.
II. If healthy bark on the trunk accounts for more than half of an apple tree, bridge graft on the frost-damaged side. If the damage is severe, it must be regrafted.
III. For relatively lightly damaged apple trees, before bud break, spray 100-fold Duoxiao Miefuling to prevent rot disease. After bud break, scrape off the frost-killed bark and apply 843 recovery agent or Fuxing undiluted solution. During the apple tree's growth period, use agents for treating rot disease, such as 9281, tebuconazole, etc., to disinfect the branches and trunk, once every two weeks. 7 to 10 days after leaf expansion, spray once with Shengmingsu plus a small amount of urea, for 4 to 5 consecutive sprays. When pruning, in addition to cutting off frost-killed branches, minimize wounds as much as possible, follow the principle of light pruning, leave some branches unpruned, and cut back the extension branches to the point where vigorous shoots emerge.
IV. If apple buds are damaged and the terminal buds and lateral buds are all frost-damaged, increase the amount of fertilizer and supply water in a timely manner to promote the sprouting of latent buds and secondary buds, and rebuild the fruiting branches.
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