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Detailed Explanation of Key Points for Frost Protection Techniques in Citrus Cultivation
For fruit trees that have suffered relatively severe frost damage, adopt tree-preservation measures: First, mound soil to increase temperature. Mounding soil protects the root crown; the standard for mounding is that the root system is not exposed and the root crown is covered. Second, whitewash and wrap the branches and trunk. The trunk and main branches form the tree framework and are prone to frost damage, which leads to weakened tree vigor
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What are the control measures for drought damage in jujube trees?
The drought resistance of jujube trees is relatively strong; it is commonly known as the "iron-stem crop", but if drought persists for a long time and cannot meet the minimum water required for the growth and development of jujube trees, it will seriously affect the growth, development and fruiting of jujube trees. 1. Symptoms of drought damage (1) Growth and development stop. Because the root system cannot absorb water for a long time
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How to prevent frost damage in plum trees? Key technical points for frost prevention when growing plum trees
Frost injury and freeze damage refer to the phenomenon in which the soil and plant surface temperatures drop to 0°C or below 0°C for a short time at night during the growing season, or when frost occurs, causing damage to the young and tender parts of fruit trees. In China, the average annual area affected by frost damage reaches 340,000 km2, and in the worst year it reached 7
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Detailed Explanation of Control Methods for Root Rot in Saposhnikovia divaricata Cultivation
(1) Damage situation and symptoms: Root rot mainly affects the roots of Saposhnikovia divaricata. In the early stage of infection, the fibrous roots become diseased, and the diseased roots turn brown and rot. As the disease progresses, the lesions gradually spread to the stem, the vascular bundles are destroyed, losing their water-transporting function, leading to root-zone rot, and the leaves wilt
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How to control the mango tree borer (Chlorophorus annularis)
Distribution and damage: it occurs both at home and abroad, and in China it occurs to varying degrees in Yunnan, Guangdong, Guangxi, Fujian and other places. The larvae bore into and feed on the branches of fruit trees such as mango and cashew, usually entering from young branches and gradually boring downward to large branches and the trunk, seriously affecting
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Mango Pests and Diseases: Control Methods for the Oriental Fruit Fly
(1) Damage Also known as the oriental fruit fly, mango fruit fly, fruit maggot, yellow fly, etc. Adults lay eggs inside the skin of nearly ripe fruit; after hatching, the larvae feed on the flesh, causing fruit splitting, rotting and dropping. The surface of infested fruit remains intact, but on close inspection there are pin holes; when pressed by hand, juice oozes out, and when cut open
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What are the care methods for citrus trees after freezing damage
After a citrus tree is damaged by freezing, the aboveground part suffers varying degrees of injury or dieback, while the underground part is generally less damaged. Post-freeze care measures mainly make use of its relatively intact root system to promote the sprouting of new branches, restore the canopy as quickly as possible, and gradually achieve the goal of normal growth and fruiting.
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Integrated Control Methods for Anthracnose in Citrus Cultivation
After damage, it causes leaf spots, fruit drop, and branch dieback, weakening tree vigor and even killing the entire tree, greatly affecting citrus yield and tree vigor. In particular, the rainy and sunless conditions last autumn caused severe waterlogging in some citrus orchards, poor root growth, and weak tree vigor, which allowed the anthracnose pathogen
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How to prevent and control arrowhead scale damage to young fruit when growing citrus
The citrus arrowhead scale is currently one of the main pests in citrus orchards in eastern Guangdong and northern Guangdong, with more than 50% of the orchard area in these regions affected to varying degrees, impacting production. The author conducted systematic fixed-point, regular observations of the occurrence of the citrus arrowhead scale, and carried out
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How to prevent late spring cold damage during the pear tree flowering period
Spring late cold spells and frosts are very harmful to pear trees. Generally, when pear trees encounter a low temperature of -4.0°C at the bud stage or -2.3°C to -2.9°C at the flowering stage lasting more than half an hour, the flower organs will suffer freezing damage, usually manifested as poor pollination, dried and dead stigmas, and browned filaments or
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