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What diseases need to be prevented and controlled in the cultivation of yardlong beans?
What diseases need to be prevented and controlled in the yardlong beans being grown? Please give an introduction. The main diseases of cultivated yardlong beans are as follows: 1. Identification and control of cercospora leaf spot. 1. Symptoms: It mainly damages leaves, stems and vines, and pods. In the early stage of the disease, purple-brown spots appear on both sides of the leaves. After they expand, they become nearly round dark brown lesions, 1~2 cm in diameter...
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How to prevent and control Osmanthus brown spot disease? These methods you need to know
Osmanthus brown spot disease is a common disease of osmanthus, caused by infection with fungi of the subphylum Deuteromycotina. It occurs in both field-planted and potted osmanthus plants. When it strikes, mild cases affect the ornamental effect, while severe cases cause plant death. Symptoms mostly occur on leaves, mostly spreading from the leaf tip and leaf margin toward the entire leaf. In the early stage, the lesions are light...
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What are the control methods for Osmanthus brown spot disease?
Brief introduction Osmanthus brown spot disease is a very common disease; in severe cases it causes the whole plant to drop its leaves, affecting flowering and ornamental value. It has long been reported in countries such as the UK, the US and Japan. It also occurs frequently in Shanghai, Nanjing, Hangzhou, Jinan, Beijing, Fuzhou, Guilin, Xiamen, Guangzhou, Taiwan, China and other provinces and cities in China. Symptoms The pathogen mainly infects the leaves...
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Ginseng Disease Prevention and Control Methods and Key Technical Points
Ginseng is a plant of the genus Panax in the family Araliaceae, mainly produced in China's Jilin, Liaoning, Heilongjiang and other provinces. Its roots, stems, leaves and fruits are used as medicine, and it has the functions of greatly tonifying vital energy, strengthening the heart and rescuing from collapse, benefiting the heart and restoring the pulse, promoting fluid production and calming the mind. There are many types of ginseng diseases, more than 20 in China, and those that currently occur commonly and cause serious damage in production include...
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Rose plants are known as "medicine jars," but black spot disease can be easily dealt with using these techniques
If you plan to grow roses on your balcony or in your yard at home, you need to be prepared to spray pesticides frequently. Roses have the nickname "medicine jar" because they are prone to fungal infections and easily attract pests. If not dealt with in time...
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How to prevent and control aloe pests and diseases? A full breakdown of practical methods
What should you do if you want calla lilies to bloom more? What techniques are needed to make calla lilies grow vigorously and bloom more? You must follow their habits and do the following: ① Plant them in fertile, loose, slightly acidic sandy soil, with a pH value of about 5.5-7. Calla lily growth mainly relies on base fertilizer; during the growth process, lack of fertilizer or excessive fertilization will both cause...
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What are effective ways to increase peanut yields?
What methods can increase peanut yields? Here are some methods you can refer to for increasing peanut yields: 1. Clearing the seedlings and hardening them off: After peanuts emerge, scrape away the soil around the base of the seedlings to expose both cotyledons above the ground. This allows the first pair of lateral branches of the peanut to develop early, shortens the internodes of the stem, and achieves strong seedlings with earlier flower bud...
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What diseases should be prevented and controlled when growing sunflowers?
What diseases should be prevented and controlled when growing sunflowers? Please give an introduction. Sunflowers need prevention and control of the following diseases: I. Symptom identification 1. Sunflower rust is an important disease of sunflowers, reducing yields by 40-80% in pandemic years. After infection, rust-like spore piles can form on leaves, petioles, stems, flower discs and other parts. When leaves are infected...
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How to prevent dry bubble disease early in button mushroom cultivation
Dry bubble disease is one of the main diseases of button mushrooms. The pathogen infects during the spawn-running stage and grows in sync with the button mushroom mycelium, but does not show symptoms for the time being; the mycelium invades during the fruiting stage. Affected caps develop dark brown depressions and are covered with white powder; the stipes are uneven in thickness and develop abnormally; diseased mushrooms have no water soaking, no slime and no foul odor, and eventually dry up. The pathogen survives in soil for a long time and spreads through many routes, so prevention should start with substrate processing.
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What are the methods for preventing and controlling pests and diseases in yam?
What methods are there for preventing and controlling pests and diseases when growing yam? Please give an introduction to the methods. When growing yam, the following methods can be used to prevent and control pests and diseases: I. Agricultural control 1. Selecting disease-resistant varieties is an effective method for preventing and controlling yam pests and diseases. When cultivating disease-resistant varieties, a rational layout should be used, rotating varieties every 2 to 3 years, and paying attention...
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