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What are the three common diseases of chrysanthemums?
Chrysanthemum, also known as ganjuhua, is a perennial herbaceous medicinal plant of the Asteraceae family. Its traditional Chinese medicine names are white chrysanthemum and yellow chrysanthemum. The flowers are used as medicine and have the effects of dispersing wind and dissipating heat, and clearing the liver and brightening the eyes. It is mainly produced in Anhui, Zhejiang, Henan, Hebei and Sichuan, and is cultivated in other parts of the country. The main diseases of cultivated chrysanthemums include chrysanthemum powdery mildew, ...
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What are the effective methods for increasing cotton yield and disease resistance?
How can cotton be made to increase yield and resist disease? What are the tricks? Surveys conducted in some cotton-growing areas found that only about 45% of cotton growers apply nitrogen, phosphorus and potassium compound fertilizer; most farmers apply ammonium bicarbonate, urea and superphosphate, and about 15% of them use only phosphate fertilizer as a base dressing. This situation shows that in...
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What to Do When Oyster Mushrooms Get Walnut Meat Fungus Disease? Occurrence Patterns and Integrated Control
Recently, many readers have reported that the oyster mushrooms they cultivate have been affected by walnut meat fungus (Diehliomyces microsporus). We are therefore reposting an article titled "Occurrence Patterns and Control Techniques of Walnut Meat Fungus in Oyster Mushrooms" published by Yang Yongheng, An Xiurong and others of the Tai'an City Institute of Agricultural Sciences, Shandong, for growers' reference: In recent years, Tai'an City and its surrounding...
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What pests and diseases should ginger be protected from? Detailed explanation of control key points
What pests and diseases should ginger be protected from? Please help introduce the following pests and diseases that need to be controlled during ginger cultivation: stem diseases (ginger blast, ginger rot, etc.); when diseased plants are found in the field, promptly dig out the diseased plants and the soil around them, carry them out of the field for deep burial, apply 125 grams of bleaching powder in the hole or pour 1% bleaching powder solution, then use...
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Common pests and diseases in loofah cultivation and their control methods
What pests and diseases need to be controlled when growing loofah? Please provide guidance. When growing loofah, the following pests and diseases need to be controlled: The main insect pest of loofah is: the yellow squash beetle. When insects that look like fireflies appear in a loofah field, these are symptoms of damage by the yellow squash beetle. Adult yellow squash beetles bite and feed on plant leaves, stems, flowers and fruits, breaking off the tender stems of seedlings, with leaf damage being the main type; in severe cases they can cause the death of the entire plant. The larvae cause damage to the roots in the soil; after the 3rd instar they bore and feed between the phloem and xylem, causing the aboveground parts to wilt and die. The yellow squash beetle likes warmth and moisture, is most active at noon, and the adults have a wide feeding range, damaging loofah, bottle gourd, winter melon, zucchini and other gourd vegetables.
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What are the common pests and diseases in grapefruit cultivation?
What are the common pests and diseases of grapefruit? How should they be prevented and controlled? Please describe the following common pests and diseases of grapefruit and their control methods: I. Main diseases of grapefruit. The main diseases of grapefruit include citrus huanglongbing, canker, scab, and anthracnose; their control methods are the same as those for mandarin oranges and can be applied by reference. Canker is relatively serious in its harm to grapefruit...
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Symptoms and Control Methods of Pineapple Black Heart Disease
What is pineapple black heart disease? How to control it? Please advise. Pineapple black heart disease is one of the major diseases of pineapple, mainly affecting the fruit. In mild cases it affects fruit quality; in severe cases it causes the fruit to lose its commercial value. Symptoms: This disease mainly affects ripe fruit. There are two types of symptoms: one is that the fruitlets are affected and turn brown or form...
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What pesticides are commonly used for controlling pests and diseases in chrysanthemums?
I. Main symptoms: They occur on the leaves, mostly on the lower leaves. The lesions begin as chlorotic yellow spots; after expanding, the lesions become round to irregular in shape, with dark brown edges and grayish-brown centers; in the later stage the lesions dry up and black granular bodies appear. II. Cause of the disease: It is a fungal disease. The pathogen survives in the soil...
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How to prevent and control mulberry shoot-blight disease? Simply remove the mulberry flowers and fruits
Mulberry shoot-blight disease, also known as branch-blight disease or white mulberry fruit disease. Shoot-blight is a mulberry disease that has become widespread in recent years. It is caused by the pathogen Sclerotinia minor, which infects new shoots through the fruit stalk, causing the base of the new shoot to rot and break off. Its characteristic is that mulberry trees bearing female flowers, or both male and female flowers on the same tree, are prone to this disease, with a shoot-blight rate of...
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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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