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How to prevent and control apple canker in summer? These methods must be mastered
How to prevent and control apple canker in summer? Please introduce the methods. In the prevention and control of apple tree canker, for many years attention has been paid to spring control while summer and autumn control has been neglected, resulting in a high recurrence rate of the disease and making it impossible to eradicate completely. However, according to the occurrence pattern of canker, changing the single spring scraping and chemical treatment to mainly summer and autumn control, combined with spring control...
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What are the key technical points for summer management of apple trees
How should apple trees be managed in summer? Please explain the methods. In summer, apple trees can be managed by referring to the following methods: 1. Disease and pest prevention. Entering summer, with high temperatures and high humidity, various pathogens and pests are most likely to breed and multiply, so doing a good job of disease and pest prevention is particularly important. Its preventive measures include: comprehensive chemical control, manual prevention...
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What are the main summer management measures for apple trees?
What are the main management tasks for apple trees in summer? Please guide. The main summer management tasks for apple trees include the following: 1. Fertilizer management. To meet the nutrient needs of apple trees in summer, topdressing should be done in time. Generally, in hot and rainy seasons, fertilizer should be applied in small amounts but multiple times. In summer, topdressing is also needed in the late stage of fruit growth. For young fruit trees, apply Dimijia fertilizer 0.2-0.5 kg per tree; for trees in full fruit stage, apply Dimijia fertilizer 1-1.5 kg per tree.
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Apple Tree Summer Pruning Methods and Technical Key Points
How to prune apple trees in summer? Methods explained. Summer pruning, also called growing-season pruning, is one of the important parts of the year-round pruning of apple trees and holds a rather important position in the annual pruning of fruit trees. Its main pruning methods include ringing, girdling, shoot twisting, pinching, branch bending, branch thinning, and autumn heading cuts, etc. But if...
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What are the methods for controlling summer mites on apple trees?
How to control mites on apple trees in summer? Please learn about the damage caused by summer mites on apple trees: I. Damage symptoms 1. Hawthorn spider mite. Also known as the hawthorn red spider, it mainly damages the leaves, tender buds and young fruit of apple trees. When leaves are damaged, the red spiders gather on the underside of the leaves, spin silk and form webs, with fine soil particles and eggs sticking to the webs, and many pale white spots appear on the upper surface of the leaves. When the damage is severe, rust-colored symptoms appear on the underside of the leaves, followed by dehydration and hardening, and the whole leaf turns yellow-brown and scorched, resembling being burned by fire. In severely affected orchards, most leaves may drop between June and July, causing a second round of flowering and budding, and severely damaged buds cannot continue to grow and die.
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What should be noted in summer management of apple trees?
What should be noted in summer management of apple trees? Please introduce the following points to note for apple trees in summer: First, avoid excessive thinning of branches. Excessive thinning of branches easily stimulates dormant medium and short branches to sprout and grow again, and because a large number of leaves are removed, the photosynthetic capacity of the tree is weakened, which is not conducive to nutrient accumulation and flower bud formation...
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What are the key technical points for apple management in summer and autumn?
How should apples be managed in summer and autumn? Please advise. Summer and autumn apple trees can be managed by referring to the following methods: (1) Fertilizing under the tree, generally based on quick-acting compound fertilizer, topdressing according to tree age and fruit load; for full-bearing trees, apply 2-3 kg of Heiyouliang: (2) Foliar spraying of fertilizer. In general, supplemental fertilization outside the roots is 5 times more efficient than fertilization within the roots, costs little, is simple in method, what are the causes of apple valsa canker, and does not cause pollution to the ecological environment. Every 10-15 days, before 9 a.m. and after 4 p.m., spray Hongxin amino acids at 400-500 times dilution + Aiduoshuo + Shuofeng 481 continuously for several times, to promote thick green leaves, strong tree vigor, and enlarged fruit size.
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Common Summer Pests and Diseases of Apple Trees and Their Control Methods
What pests and diseases of apple trees need to be controlled in summer? Here are several pests and diseases that may need to be controlled in summer apple orchards for reference: 1. Peach fruit borer: The larvae bore into the fruit and cause damage, resulting in deformed fruit development and the formation of "monkey-head fruit," "bean-paste-filled fruit," and the like. Commonly used pesticides are 2.5% Kung Fu at 1500x dilution, or chlorpyrifos...
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Pineapple common disease picture gallery: symptoms identified at a glance
Pineapple black heart disease pictures. Pineapple black heart disease is one of the main pineapple diseases, mainly damaging the fruit; in mild cases it affects fruit quality, and in severe cases it makes the fruit lose its commercial value. Pineapple wilt disease pictures. Pineapple wilt disease is called red leaf disease, root rot, and pineapple plague by growers. The disease is caused by mealybugs...
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Control Methods for Phomopsis Leaf Spot on Pineapple Trees
How do you control Phomopsis leaf spot on pineapple trees? What harm does Phomopsis leaf spot on pineapple trees cause? Please provide an introduction. Harm of Phomopsis leaf spot on pineapple: Phomopsis leaf spot on pineapple is a common disease, belonging to one type of leaf spot disease. It mainly damages leaves, affects leaf photosynthesis, and causes...
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