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Key Technical Points for the Prevention and Control of Apple Pests and Diseases in the Mid-to-Late Stage
The young fruit stage is the peak infection period of early defoliation disease, the initial stage of branch ring rot, and also the peak damage period of aphids, leaf mites and scale insects. Therefore, doing a good job in the prevention and control of apple pests and diseases during the young fruit stage is crucial for strengthening tree vigor, improving fruit quality and achieving increased
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Control Methods for Anthracnose in Mango Cultivation
1. Damage symptoms: It mainly damages mango flowers, fruits and young shoots. After young leaves are infected, many round brown spots appear, surrounded by yellow halos, and gradually expand into round, polygonal or irregular brown lesions, which later rupture and perforate. The wounds on leaves and young fruits caused by gall midges, leafhoppers and other pests are also easily infected by this disease.
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Control Methods and Technical Key Points for Mango Shoot Blight and Gummosis
Mango shoot blight and gummosis mainly damages branches and the main trunk, causing dieback, but it can also harm seedlings and fruit. When seedlings are affected, dark brown necrotic spots usually appear from the bud graft point or wounds, rapidly spreading upward and downward, causing the scion to die. When the main trunk or branches are affected, the cortex
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Control methods for yellowing disease in citrus cultivation
In many places in our province, citrus yellowing disease occurs commonly in citrus orchards, causing weakened tree vigor, reduced yield, degraded quality, and premature tree decline. Some fruit growers believe it is all citrus greening disease and adopt the practice of cutting down trees, causing unnecessary production losses. In fact, yellowing disease, as long as it is not
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How to prevent and control root-knot nematode disease when growing citrus?
Citrus root-knot nematode disease damages the citrus root system, causing root galls of various sizes to form on the roots, and fibrous roots to clump together into a cake-like mass, which hinders the root system's ability to absorb nutrients and reduces the number of absorbing roots. When citrus is first infected and damaged by root-knot nematodes, the decline is not very obvious in the canopy
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How to control common pests and diseases of citrus?
For the citrus flower bud maggot, control can begin when the flower buds show white (about the size of a mung bean). The method is to spray the ground with 120-150 g of 90% trichlorfon crystals per mu mixed with 20 kg of water; or use 150 g of 1605 capsule formulation or 2.5-3 kg of 3% carbofuran per mu, add 25 kg of fine soil, mix well and spread on the tree
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Causes and Control Methods of Citrus Sunburn
Citrus sunburn is a common physiological disease in hot seasons, mainly affecting leaves, fruit and bark. The occurrence of this disease is mainly caused by exposure to high temperatures and scorching sun. At noon and in the afternoon during hot weather, the local temperature of orange trees exposed to direct sunlight rises sharply
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Pollution-free control techniques for diseases, pests, and weeds in jujube trees
Fully implement the plant protection policy of giving priority to prevention and comprehensive control, base efforts on improving the orchard ecological environment and strengthening cultivation management, give priority to agricultural and ecological regulation measures, pay attention to protecting and utilizing natural enemies, and give full play to the natural control role of natural enemies. Select high-efficiency
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Control Methods for Major Pests and Diseases in Jujube Cultivation
I. Major Diseases 1. Jujube rust. This disease mainly damages leaves, and sometimes also infects fruit. On the back of affected leaves, scattered light green spots appear, gradually turning pale grayish brown, and finally the lesions turn yellowish brown and produce raised summer spore piles. On the front of the leaf, opposite the summer spore piles
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Methods for Preventing and Controlling Pests and Diseases of Winter Jujube Trees in Autumn and Winter, and Key Technical Points
After the beginning of autumn, winter jujube trees gradually enter the dormant period, and their tolerance to chemicals is relatively high. As temperatures drop, pests and diseases enter bark cracks, scars, branch forks, fallen leaves, fallen fruit, mummified fruit or the soil, where they lurk to overwinter. Therefore, it is necessary to seize the favorable opportunity for pest and disease control in autumn and winter,
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