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What are the control methods for the three major rice diseases?
How do you control the three major rice diseases? Please explain the control methods. The three major rice diseases can be controlled by referring to the following methods: 1. Rice blast (1) Leaf blast: dark green, nearly round or oval lesions, which later become slightly pointed at both ends; generally, when acute-type lesions appear or an infection center develops, especially in rice fields with high nitrogen fertilizer rates and tender, lush green growth, when the total number of leaf blast lesions occurring on 20 hills of rice during the entire growth period before heading reaches more than 400, spraying must be carried out, with an interval of 3 to 5 days, and continuous spraying 2 times.
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What are the methods for growing button mushrooms in rice fields?
How are button mushrooms grown in rice fields? Please explain. Button mushroom cultivation in rice fields is a planting method that uses rice straw and other materials as the main raw materials, which are composted and fermented to make the growing substrate, utilizes the temperature and light resources of autumn, winter and spring and the idle seasons, and adopts open-field cultivation of button mushrooms in rice fields after the rice harvest. 20...
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What pesticide should be used to control the small brown planthopper at the rice heading stage?
What pesticide should be used to spray for the small brown planthopper at the rice heading stage? Please note that for the small brown planthopper at the rice heading stage, the following pesticides can be used for reference: the small brown planthopper not only transmits the virus and causes viral diseases such as rice stripe virus disease, but also concentrates on the panicles to cause damage during the heading stage of late rice. The experiment set up per mu with 40% chlorpyrifos emulsifiable concentrate 100 ml, 10% nitenpyram aqueous solution 3...
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What pesticide is effective for controlling rice stem borers?
What pesticide can be used to control rice stem borers? Please give an introduction. Rice stem borers are commonly known as "zuankin chong" (stem borers), including the Asiatic rice borer (Chilo suppressalis), the yellow stem borer (Scirpophaga incertulas), and the pink stem borer (Sesamia inferens). After these pests bore into rice stems and cause damage, commonly used pesticides such as monosultap, bisultap, triazophos, diazinon, acephate, phenthoate, chlorpyrifos, cartap, and abamectin all give very poor control...
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Rice pests and diseases: What pests and diseases affect rice in August?
What pests and diseases affect rice in August? Please explain and guide how to prevent and control them. The key targets for prevention and control of rice pests and diseases in August are rice false smut, neck blast, and bacterial leaf streak, while also controlling rice planthoppers and rice leaf folders. You can refer to the following methods for prevention and control: 1. One week before rice booting (when the boot swells),...
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What should be noted for pest and disease control in the late stage of rice?
What should be noted for pest and disease control in the late stage of rice? Please advise. The following points should be noted for pest and disease control in the late stage of rice: The control target must be clear. According to the different types of pests and diseases in the field, corresponding pesticide control should be adopted. When pesticides are mixed, their content must be clearly understood, especially for the control of panicle neck blast. Tricyclazole has...
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Which pesticide is effective for controlling the rice leaf roller?
Which pesticides are effective against the rice leaf roller? Please give an introduction. The rice leaf roller, also known as the rice leaf roller worm, commonly called the leaf scraper, white leaf worm, leaf folder, etc., is a major pest during the rice growing period. This pest damages rice as larvae, binding leaves into longitudinal rolls, hiding inside and chewing the upper epidermis and mesophyll; the symptom is that the damaged leaves...
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What insecticide works well to control the rice leaf roller?
What insecticide should be used to spray the rice leaf roller? Please give an introduction. The rice leaf roller's occurrence is characterized by early immigration, many peak generations, and large moth numbers, with the fifth (3rd) and sixth (4th) generations occurring continuously and severely, causing heavy natural damage. Because current high-yield cultivation uses large amounts of nitrogen fertilizer in the late stage, plus the expansion of direct-seeded rice, machine-transplanted rice and other cultivation areas, the rice growth period is delayed...
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Which pesticide is effective for controlling the rice stem borer (Chilo suppressalis)?
What pesticide should be used to control the rice stem borer? Please advise. Common control agents for the rice stem borer include 25% Actara water-dispersible granules, 5% Regent suspension concentrate, 20% Haonianidong emulsifiable concentrate, 50% fenitrothion emulsifiable concentrate, Nongjiale emulsion, 5% Shachongshuang granules, 80%...
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When is the best time to apply potassium fertilizer to rice?
When is the best time to apply potassium fertilizer to rice? Please provide guidance. In rice production, scientific and rational application of potassium fertilizer plays an important role in cultivating robust seedlings, improving resistance to disease, pests, and lodging, as well as the seed-setting rate, and achieving high and stable yields. But during the rice planting process, when is the best time to apply potassium fertilizer?...
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