Potassium permanganate can be used as a pesticide

Everyone knows that it is a strong oxidizing and reducing agent. It is a kind of surgical medicine commonly used by humans and animals. It is commonly known as pp powder. Its solution has strong sterilization, disinfection and antiseptic effects. Some experiments have proved that the use of different concentrations of solution to control flower seedling stage disease and blight, downy mildew, soft rot, blight, root rot, viral disease and other diseases, the effect is very significant.

Potassium permanganate is a strong redox agent widely used as an oxidizing agent. At the same time, it contains two kinds of nutrients such as manganese and potassium, which can be used for plant growth. It can be said to be used for both medicine and fertilizer. According to medical experts, the drug is rich in source and low in cost. It is sold at pharmacies all over the country and is easy to purchase. It is safe and non-toxic to humans and animals when used. It has no residue, no phytotoxicity to the crops, and no pollution to the environment. Therefore, potassium permanganate is a kind of fungicide with both medicine and fertilizer, non-toxic, no residue, pollution-free vegetables and flowers. It mainly includes in the prevention and treatment of plant diseases:

First, the prevention and treatment of rickets, blight, petunia, a string of red, marigold after the emergence of the seed, every 7 to 10 days with 800 ~ 1000 times (first diluted and then concentrated) spray. According to the test, the effect of potassium permanganate on the disease at the seedling stage is as high as 97%, and the effect is significantly better than that of carbendazim, dexamethasone, pentachloronitrobenzene and dikesone.

Second, the prevention and treatment of downy mildew proved that the use of potassium permanganate to control plant downy mildew has a good effect, significantly better than chlorothalonil, daisen zinc and other pesticides. For example, cineraria can be sprayed with potassium permanganate 800~600 times before flowering, and sprayed 4 times for 5~7 days, even spraying 4 times, which can effectively prevent the occurrence of downy mildew. In the case of a central diseased plant, it is sprayed three times with 600 times of potassium permanganate, with an interval of 5 days, which has a good control effect on downy mildew.

Third, the prevention and treatment of soft rot potassium permanganate can effectively prevent a string of red, snapdragon, marigold soft rot. For example, pre-soaked with high-temperature water for 1 hour before sowing, then remove and put in potassium permanganate 1000 times for 2 hours, and spray 800~600 times for 3~4 times in seedling stage, which can effectively prevent soft rot. And can cure downy mildew.

Fourth, the prevention and treatment of viral diseases with potassium permanganate to control plant virus disease is significantly better than the virus A, bacteria and clear pesticides . In the early stage of the disease, the whole plant is sprayed with 600~800 times of liquid, once every 5~7 days, and even sprayed 3~4 times. If potassium permanganate is used in combination with double-acting mepidalin K in the same amount of 800-1000 times solution, the effect of preventing and treating viral diseases is better, not only can control the spread of viral diseases, but also make the disease of the plants disappear and return to life, with a resurgence. The role. However, it should be noted that before the prevention and treatment of viral diseases, the sucking pests on the plants should be prevented to prevent insects from transmitting poison.

V. Sterilization and disinfection of the greenhouse The potassium permanganate is added to the formalin solution to produce formaldehyde vapor, which disinfects the inoculation box and chamber of the edible fungus and has a good sterilization effect. When fumigation, 10 ml of formalin is placed in the cup per cubic meter of space, 5 g of potassium permanganate particles are quickly added, and the cells are fumigation in a closed box and room for 4-6 hours. When using potassium permanganate spray, it should be noted that the drug is continuously stirred evenly to dissolve the drug particles, and it can be used as needed to prevent long-term oxidation failure. In addition, the spray should be selected at around 9 am or after 4 pm. 7 pre-leaf seedlings were sprayed with water for 5 minutes and then rinsed with water; low concentration in seedling stage and high concentration in adult stage.

6. Sewage soil disinfection Potassium permanganate is formulated into 800~1000 times solution, sprayed with a sprayer for fine spraying. After spraying, it is covered with plastic film for 7 days. Seeding with this soil can effectively prevent the blight of plant seedlings. Stem rot, smashing disease, etc.

However, due to the strong oxidizing and reducing agent of potassium permanganate, it is not possible to use dead water, sewage and hot water to mix pesticides, otherwise the bactericidal effect will be reduced. Because of the reduction reaction between potassium permanganate and organic matter, manganese dioxide will be formed and lost. Bactericidal efficacy.

More pesticide knowledge , please pay attention to China Pesticide Network

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