How to grasp the best time for disease prevention and control of vegetables

In general, spraying at the beginning of the disease is the best period of disease prevention, that is, when the first strain of diseased vegetables is just found in the field, it is best to spray. Spraying at this time not only avoids the waste of spraying when there is no disease, but also does not cause crop loss caused by spraying after serious disease. However, it is difficult to grasp this opportunity in production. It is often found that the disease has reached the middle and late stages of disease development and has missed the best prevention and treatment period. Therefore, in the prevention and control of vegetable diseases, especially the greenhouse greenhouse vegetables in the protected area, the best method is to prevent the local common disease types and regularly spray drugs. A large amount of practical experience shows that regular spray prevention is the most comprehensive measure of disease prevention and control. By taking this measure, the total dose will not increase during a growing season. At the same time, because the vegetables are not disease-causing, the yield will not be lost, and the quality will be guaranteed, thus increasing the income of the farmers. Linyi Fertilizer Network Copyright

share to: