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Symptoms, disease ecology, and management of sooty mold on coconut
What do the symptoms of sooty mold on coconut look like? What is its disease ecology? Would you like to learn about it? Symptoms: On the lower or upper surface of the leaves, black soot-like mycelium is produced; in severe cases it forms a whole black covering that blankets the leaves, seriously affecting the normal physiological function of the leaves.
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Symptoms, Damage and Control Methods of Coconut Scale Insects
What is the damage caused by the coconut pest Pseudaulacaspis? How should it be controlled? Ecological habits: there may be 10 generations per year, and 1 generation lasts about 33 days. It usually reproduces by parthenogenesis; the mother insect lays eggs under the scale around her body, the egg-laying period is 8 to 10 days, and each female can
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Introduction to the Symptoms and Control Methods of Seedling Blight in Calla Lilies
What do the symptoms of seedling blight in calla lilies look like, what are the transmission routes, and how do we go about controlling this disease? Let's take a look together. Symptoms: It causes rot of the bulb sprouts, browning of seedling leaves, and shriveling and curling. When the sprouts are not damaged, they can still grow normally; if the affected leaves dry up and wrap around the terminal bud, it causes stunting or poor stem emergence. Besides damaging the leaves, this fungus can also harm the base of the stem, causing browning symptoms at the sprouting sites and forming wounds that facilitate further damage by bacterial soft rot.
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Control Methods for Phytophthora Blight, a Disease of Cyclamen Pests and Diseases
An introduction to the symptoms and control methods of Phytophthora blight, a disease of cyclamen pests and diseases. Symptoms: the heart bud and the base of the plant are affected. In the early stage of infection, the plant's leaves droop, the petiole and peduncle tissue near the tuber fade and become constricted, and the leaves and flowers wilt and fall over. The heart bud turns brown and withers. The underground tuber
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Introduction to the symptoms and control methods of sugarcane white stripe disease
Do you like eating sugarcane? Would you like to learn about the pests and diseases of sugarcane? Below is an introduction to one of the sugarcane diseases, white stripe disease. It mainly covers the symptoms, disease ecology and control methods of white stripe disease. Let's take a look. Symptoms: This disease has chronic and
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Common diseases of cotton bolls and control methods for cotton boll blackening
Do you know what diseases can occur during cotton cultivation? Below we introduce the most common cotton boll blackening disease. Do you know this disease? What do the symptoms of this disease look like on cotton? What are the control methods? Let's take a look together.
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Symptoms and Control Methods of Mango Powdery Mildew
What do the symptoms of mango powdery mildew look like? What are the ecological causes of its occurrence? How should it be controlled, and what are the control methods? Symptoms: This disease can occur on mango inflorescences, young leaves, young fruit and young stems. Generally, a powdery fungal growth can be seen on the affected parts. On young stems and leaves, small lesions in the early stage are surrounded by a brown ring; later the lesions merge into large white patches, which then gradually turn blue-purple. Severely affected young stems and leaves often become deformed; when the lesions continue to develop and encircle the flower stalk, the small fruit on it will begin to turn yellow and drop, so a severely affected mango tree will bear no fruit at all. In the later stage of the disease, the fungal growth at the lesions turns grayish-black. After fruit that has previously been affected develops and grows, a purple network pattern appears on the surface, affecting the commercial value of the fruit.
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Apple Scab: Control Methods and Specific Fungicides
What does apple scab disease look like? What is the ecology behind its occurrence? What control methods are there? Symptoms: It damages leaves and fruit. Initially, olive-colored irregular round spots appear on the underside of leaves, later turning gray-black, sometimes with a black metallic sheen, and the leaf tissue
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How to prevent and control peanut southern blight? What is the best medicine to use
Southern blight, one of the diseases of peanut, causes severely reduced yields in affected peanuts, so how should it be prevented and controlled? Symptoms: affected plants appear withered as if dehydrated, the stem at the soil line turns brown and necrotic, and is covered with a layer of white silky mycelium that can spread outward, forming a radiating
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Causes, Symptoms and Control Methods of Sorghum Sheath Blight
What causes sorghum sheath blight? What are its symptoms? How should it be controlled? Let's take a look together. Symptoms: It mainly damages the leaves and the base of the stem. On the leaf sheaths near the ground level, small white-green water-soaked lesions first appear, then expand into oval shapes, with brown margins and lighter centers. Lesions on the leaves appear grayish-green or grayish-white and cloud-like, and most of the lesions merge into a tiger-stripe pattern, causing the entire leaf to wither and die.
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