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What is soybean sclerotinia and how to prevent and control it
What is soybean sclerotinia and how to prevent and control it? Help! Soybean sclerotinia mostly occurs from July until before maturity. The symptoms are that moist green lesions first appear at the base of the stem, then quickly expand, after which cottony mycelium grows on the lesions, the epidermis splits into a hemp-like texture, and black mouse-dropping-shaped "sclerotia" form inside and on the surface of the stem...
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Key Technical Points for Spring Pest Control and Fertilization of Mulberry Trees
First, pest control must be strengthened. The pests harming mulberry trees in spring are the "mulberry looper" and the "mulberry tussock moth," which mainly feed on mulberry buds and tender leaves. For control, during the mulberry bud stage, a 1000-fold dilution of "dichlorvos" solution can be sprayed; once the mulberry leaves have grown larger, manual catching is the main method. Second, fertilize at the right time. Applying spring fertilizer promptly can promote...
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Key Technical Points for Pest and Disease Control in Mulberry Trees After Summer Pruning
Mulberry dwarf disease is a whole-plant disease of mulberry trees. It can be divided into three types: yellowing, dwarfing, and mosaic. 1. Symptoms ① Yellowing-type dwarf disease: In the early stage of the disease, it mostly starts from the top of the branches, with small yellow leaves that curl toward the underside. As the disease worsens, the lower leaves become thin and small, yellowed, curled, and with scorched spots. The internodes of the branches are short, and side branches cluster densely, forming a broom-like...
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What are the common pests and diseases of pineapple? A detailed guide to prevention and control methods
What pests and diseases of pineapple need to be prevented? Please introduce the following pests and diseases that need to be controlled during pineapple cultivation: wilt disease. After the plant is affected, the leaves become soft and droop, the leaf color changes from pale green to red, the base rots, and finally the whole plant dies. This disease is caused by damage from mealybugs. Prevention and control methods: first, strictly take care not to use diseased seedlings for propagation.
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Control methods for pineapple stem borers and termites
How to control stem borers and termites in pineapple? Please give some advice. For pineapple stem borers and termites, you can refer to the following control methods: When rice straw or wheat straw is used as mulch in pineapple plantations, stem borers often cause damage, biting and eating the heart leaves and young stems of pineapple. You can spray a 500-800 times diluted dimethoate solution for control. Termites near...
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What are the control methods for loofah viral disease?
How do you control loofah viral disease? Please advise: loofah viral disease can be controlled by referring to the following methods: 1. Disease symptoms. Infected young leaves show blister-like spots of uneven light and dark color with an uneven leaf surface, and the leaves are small, some obviously shrunken; infected mature leaves show yellow rings or a mosaic of alternating yellow and green; severely affected leaves become hard and brittle,...
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What are the control methods for soybean root rot?
How should soybean root rot be controlled? What is the best method? Soybean root rot can be controlled with the following methods: 1. Choose disease-resistant varieties. 2. Rotate with non-host crops such as corn, foxtail millet, and sweet potato. 3. When sowing, apply more farmyard manure, potassium fertilizer, phosphorus fertilizer, etc. 4. When sowing, apply metalaxyl granules...
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What to Do About Cotton Boll Rot? A Detailed Guide to Prevention and Control Methods
What to Do About Cotton Boll Rot? What Methods Can Prevent and Control It? In mid to late August, when cotton enters the boll-opening stage, boll rot and rotten bolls often occur. In ordinary fields, the rate of rotten bolls and rotten bolls reaches 10%-15%, and in severely affected fields it reaches over 30%, often causing reduced cotton yield and lower quality. For this reason, there are the following five measures to prevent and control cotton boll rot and rotten bolls:...
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How to prevent and control cotton pests and diseases? A practical guide for growers
How should cotton be planted to prevent and control pests and diseases? When should it start? Strict seed disinfection; strongly advocate buying and selecting high-quality coated seeds that have undergone foam acid delinting, fine selection, and coating with highly effective fungicides and insecticides; for any cotton field where coated seeds are not used, the cotton seeds used must also be treated with highly effective fungicides...
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What are the control methods for mulberry rotten head blight?
Mulberry bacterial blight, commonly known as "rotten head blight", is one of the serious mulberry diseases. Symptoms: (1) black withered buds - affected buds and leaves lose their luster at the early stage of disease and die rapidly; (2) new shoot stem rot. The stem base of new shoots shows black rot, with part of the phloem and xylem necrotic; (3) rotten head. After the terminal shoot buds and leaves are infected, the growing point...
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