Detailed analysis of the use of Ray Dome and chlorothalonil
Before using pesticides, it is necessary to have a comprehensive understanding of the mode of action and efficacy of pesticides in order to ensure drug safety and achieve good drug efficacy. Today, the pesticide network Xiaobian introduces the mechanism of action and scientific application of Redomir and chlorothalonil:
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1 Rydmir is a systemic fungicide with upper and lower conduction. It has protective and therapeutic effects. When the agent is sprayed on plants, it can be absorbed and transmitted by the seeds, roots, stems and leaves of plants. Various parts, so it has a dual role of protection and treatment.
1 pure product is white crystal, soluble in water and various organic solvents, stable under neutral and acidic conditions, easy to decompose in case of alkali, and the residual effect period is 10 to 14 days. Low toxicity to higher animals, no "three" phenomenon in animals under test conditions, low toxicity to bees, but irritating to eyes and skin.
2. Formulation 25% wettable powder, 35% seed dressing.
3. Prevention and treatment of objects and use of technology to prevent diseases caused by melon downy mildew, Phytophthora and Pythium. In the early onset of the field, it can be sprayed with 25% metalaxyl WP 600-800 times, and then sprayed once every 10 to 15 days, a total of 2 or 3 times, such as the rainy weather lasts for a long time. It should be increased accordingly. Seed disinfection with 35% seed dressing, seed dressing according to the weight of the seed 0.2% to 0.5%.
4. Precautions This medicine can be mixed with various fungicides and insecticides.
2 chlorothalonil is a broad-spectrum fungicide that can replace organic sulfur and copper preparations, has a preventive effect, and has no systemic conduction. Its mechanism of action is to interact with glyceraldehyde-3-phosphate dehydrogenase in fungal cells, bind to the cysteine-containing protein in the enzyme, destroy the viability of the bacteria, and destroy the metabolism of the fungal cells and lose vitality.
1 chlorothalonil has good adhesion on the surface of plants, is not easily washed by rain, stable in medicine and long in residual effect. Pure product is white crystal, no odor; industrial crystal is yellow crystal, slightly irritating odor, insoluble in water, slightly soluble in organic solvents such as acetone, stable at normal temperature, stable to general acid, alkali and ultraviolet light, But not resistant to strong acid, rain-resistant, non-corrosive. Low toxicity to higher animals and high toxicity to fish.
2. Formulation 75% wettable powder, 2.5%, 3% smoke agent, 40% suspension.
3. Prevention and treatment of objects and techniques to prevent melon downy mildew, anthracnose, and epidemic disease. In the early stage of the disease, pesticide manufacturers recommend using 75% wettable powder 500-800 times liquid spray control, the amount of liquid per hectare is 1000 kg. Spray once every 7 to 10 days; 500--600 times of liquid can prevent diseases such as rickets and blight in the seedling stage.
4. Note 1 can not be mixed with strong alkaline pesticides. 2 It is more toxic to fish and crustaceans, avoiding pollution of fish ponds, rivers and other water sources. 3 irritating to the eyes and skin, a few people have allergic reactions and cause dermatitis.
The above are the instructions for using Radomir and chlorothalonil. For more information on pesticide use standards, please visit the China Pesticide Network .