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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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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 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 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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What are the main pests and diseases in pear tree cultivation?
What are the main pests and diseases in pear tree cultivation? Please explain. Common pests and diseases in pear cultivation include the following: 1. Pear tree valsa canker mainly damages the bark of main and side branches, causing rot. There are two symptom types, canker type and branch blight type, and in severe cases many branches die back, leading to death. For control, strengthen orchard management, control the fruit load,...
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Common Pests and Diseases in Pear Tree Cultivation and Their Control Methods
What pests and diseases should be prevented in pear tree cultivation? Here is an introduction to the main pests and diseases in pear tree cultivation: For diseases, generally spray fungicide 7 days after flowering, then spray again at an interval of 15 days. After June, on sunny days, spray the protective agent 1:3:240 Bordeaux mixture 3 to 4 times, at intervals of 15 to 20 days. During the rainy season, fungicides can be sprayed on the trees. ① Black spot disease: 75% carbendazim at 800 times dilution.
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What are the methods for preventing and controlling pests and diseases in tomato seeds
How to prevent and control pests and diseases in tomato seeds? Please explain. The general disease symptoms of tomato seeds are as follows: (1) Tomato fruit blistering disease, a physiological disease, also called rib rot or strip rot or band rot, mainly harms the fruit. Below is an introduction for everyone. There are commonly two types. One is the browning type: cut open the diseased fruit, ...
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What are the main pests and diseases of hickory? A detailed explanation
What are the main pests and diseases of hickory? How should they be prevented and controlled? Please advise. Hickory pests and diseases are important factors affecting hickory yield. Preventing and controlling pests and diseases can protect the forest, promote growth, and increase yield. Common hickory diseases include hickory branch blight and fruit tree rot. Common...
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Controlling Pests and Diseases at Peanut Sowing Time Is Highly Effective
Many types of pests and diseases harm peanuts, they occur over a wide range, and the damage is severe. Because the occurrence, distribution, epidemic patterns, damage periods, and living habits of the various pests and diseases all differ, it is quite difficult to time control measures properly in production. Practice has shown that controlling pests and diseases at sowing time can save part of the major losses peanuts suffer from pests and diseases...
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