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How to prevent and control leaf spot disease in ginger during hot and rainy seasons?
How to prevent and control leaf spot disease in large ginger during hot and rainy seasons? Please give an introduction to the methods. During the hot and rainy season, the occurrence of leaf spot disease in large ginger is on the rise, and prevention work for this disease currently needs to be done well. Ginger spot disease mainly damages leaves. Infected leaves develop yellow-white elliptical or irregular lesions, and in humid conditions scattered small black dots grow on the lesions...
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What are the methods for controlling chrysanthemum diseases?
How should chrysanthemums be managed in August? Please advise. The chrysanthemum, also known as jiuhua and huanghua, is a perennial herbaceous plant of the genus Chrysanthemum in the family Asteraceae. It is a traditional flower loved by the people of our country, one of the world's four major cut flowers, and also a commonly used traditional Chinese medicine, with the flowers used medicinally to improve eyesight and remove toxins, and to dispel wind and clear heat. It is cultivated throughout the country....
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What are the control methods for black spot disease in chrysanthemums?
How do you control black spot disease in chrysanthemums? Please note that the pathogen is Septoria chrysanthemella. Also known as brown spot and leaf blotch. It is a serious disease of chrysanthemums and occurs everywhere. Symptom characteristics: on infected leaves, purplish-brown spots of round, oval or irregular shape and varying size first appear, and later...
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Pear tree cultivation: What methods can make pears larger and increase yield?
What methods can make pears larger and increase yield? Please provide guidance. To make pears larger and increase yield, you can refer to the following methods for planting: 1. Improve the traditional tree shape. Most high-density pear orchards use the inverted herringbone shape or the double-layer open-center shape with a central leader, which is suitable for Dangshan pears. However, because early-maturing series varieties have a low branching rate...
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What are the methods for preventing and controlling pests and diseases of jujube trees in autumn and winter?
Please introduce the methods for preventing and controlling pests and diseases of jujube trees in autumn and winter? Detailed operation methods would be best. For the methods for preventing and controlling pests and diseases of jujube trees in autumn and winter, you can refer to the following methods: 1. Clean the orchard: Pests and diseases such as jujube rust, green plant bug, and jujube slug moth overwinter in fallen branches, leaves, or weeds under the trees. Therefore, after the jujube trees shed their leaves...
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Desert Rose Disease Prevention and Control Tips: Endless Blooms, Elegant and Charming
Desert rose blooms are vibrant and deeply loved by people. During care, you may encounter disease problems, such as leaf spot and soft rot. How should these be prevented and controlled? Below, the editor will take everyone to take a look! Desert rose disease prevention and control methods...
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What are the control methods for Angelica sinensis pests and diseases?
How to control Angelica sinensis pests and diseases? Please give a detailed introduction. For pest and disease control in Angelica sinensis cultivation, you can refer to the following methods: (1) Root rot (Mako disease): mid-April, mid-June, early September, and early November after transplanting are the peak periods of the disease. It damages the roots, and an abundance of soil-dwelling pests favors its occurrence. Control methods: (1) Use 391...
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What are the control methods for Angelica sinensis pests and diseases?
How do you control diseases and pests in Angelica sinensis? Please explain the methods. Here are several control methods for Angelica sinensis pests and diseases for reference: Root rot: soak the seedlings in 1:1:150 Bordeaux mixture, sterilize and kill insects in the soil: burn and smoke the soil more in the seedling bed. Brown spot: pay attention to field hygiene, promptly remove diseased leaves, and in the middle and late stages use 1:1:150...
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Which diseases need to be prevented and controlled in cotton cultivation?
What diseases need to be prevented and controlled when growing cotton? Please give an introduction. Cotton has different diseases at each stage of growth. The following introduces the diseases at the cotton seedling stage and their prevention and control for reference: 1. Seedling stage disease - damping-off (seedling death). After cotton seedlings emerge, yellow-brown lesions appear at the base of the stem (where it meets the soil surface),...
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What are the effective control methods for chrysanthemum viral disease?
How to effectively control chrysanthemum viral disease? Please explain. Viral disease is a disease that occurs easily on chrysanthemums, and control must be strengthened. 1. Strict quarantine. Chrysanthemum plants with viral disease are virus-carrying bodies. When introducing varieties, strict quarantine must be carried out to prevent the virus from being spread artificially to virus-free areas, or spread out from virus areas and expanding the affected area...
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