In the planting and management of vegetables, the most headache is pests and diseases, once pests and diseases occur, do not use pesticides, the vegetables planted are not harvested, use pesticides, and are afraid that vegetables have residues and harm. Friends often ask me: if there is a disease in vegetables, is there any other way to prevent and control it without pesticides? Not to mention, this method is potassium permanganate, which is known as "jack-of-all-trades". Potassium permanganate is a commonly used sterilization disinfectant, but it is different from pesticides, it is used to sterilize the soil and prevent and control vegetable diseases, there is no toxicity, no residue, and the effect is not worse than pesticides, in recent years has been widely used in agricultural planting.
What is the principle of soil sterilization and disease control
Potassium permanganate is not only a bactericidal disinfectant, but also a strong oxidant and preservative, in the soil and vegetables, can directly kill fungal diseases and bacterial diseases on the soil and vegetables, and also has a certain effect on viral diseases. Again, potassium permanganate also contains manganese and potassium required for vegetable growth, which plays the role of medicine and fertilizer, and has been widely used in recent years, and has achieved very good results in the prevention and control of vegetable diseases.
What diseases can be prevented
Potassium permanganate can not only prevent and control some soil-borne diseases, but also prevent and control root and leaf diseases, and have certain prevention and control effects on cataplexy, blight, blight, anthracnose, downy mildew, soft rot, root rot, virus disease, etc. It can be used for nightshade vegetables, melons and vegetables, leafy vegetables, root vegetables, flowers, cash crops and so on. It is widely used and has a wide variety of diseases to be controlled.
Soil sterilization and disinfection
Before the seedling, potassium permanganate is mixed with water 500-800 times, the seedling soil is sprayed, and then mixed well, covered with plastic sheeting, tightly sealed with soil around it, and the plastic sheet is removed after 3 days, and the seedling can be sown and raised, this method can prevent and reduce the occurrence of seedling cataplexy and blight and other diseases. Also, like families on the balcony, roof, foam box, flower pots, etc. to grow vegetables or flowers, before planting, you can use 500-800 times potassium permanganate solution to evenly spray the soil, then mix the soil well, and then cover the stuffy soil with plastic sheeting, and you can plant or transplant it after a few days.
Prevention and control of various diseases
For example: cataplexy and blight at the seedling stage of vegetables, downy mildew of cucumbers, cabbage and other vegetables, wilt of tomatoes, peppers, eggplants, melons and other vegetables, soft rot of vegetables such as Chinese cabbage and radish, virus diseases of vegetables such as tomatoes and peppers, etc. Before the onset of the disease, 800-1000 times of potassium permanganate mixed with water is evenly sprayed, which can effectively prevent the above diseases. At the same time, it can also be irrigated with 1000 times of water, which has a good effect on the prevention of root diseases and soil-borne diseases.
Other uses
In addition to sterilizing and disinfecting the soil and preventing various diseases of vegetables, potassium permanganate can also be used to soak vegetable seeds and disinfect seeds, but the concentration of soaked vegetable seeds can not be too high, and the concentration of water is generally 1000-1500 times, that is to say, 1 gram of potassium permanganate is 1000-1500 grams of water. The soaking time is 10-15 minutes, and the time should not be too long. After soaking, rinse the seeds with water before sowing.
It should be noted when using: potassium permanganate should be prepared and used now, can not be stored, can not be mixed with other drugs and fertilizers, the concentration must not be too large when used, and it can be used with it.