Careful use of Disease Prevention and Fungicides in Cotton Seedling stage

When cotton seedlings encounter low temperature, overcast and rainy weather, it is easy to be attacked by bacteria, resulting in dead seedlings, especially anthracnose and Verticillium wilt, which will cause irreparable huge losses. therefore, the prevention and treatment of cotton seedlings can not be ignored. 1. There are two types of fungicides. When choosing to use fungicides, it is necessary to understand the properties of fungicides. Fungicides to prevent plant disease are also known as protective agents, such as Bordeaux solution, mancozeb, carbendazim, etc.; fungicides, also known as therapeutic agents, are applied after plant disease to kill or inhibit pathogens invading the plant body, and the effect is better in the early stage of the disease. such as Kangkuning, aseptic, Baozhida and other compound fungicides. 2. Fungicides should be sprayed at 8: 9 a.m. and 4: 00 p.m. Spraying under the scorching sun and high temperature is not conducive to the absorption of crops, and the medicine is easy to decompose and evaporate quickly. 3. Fungicides should not be mixed with alkaline pesticides. You can't increase or decrease the usage at will. The medicine should be used at any time. 4. Fungicides are mostly powders, emulsions and gel suspensions, which must be diluted and dissolved before application, first put the medicine, then mixed with water, and then stirred with a stick. When mixed with other pesticides, fungicides should be diluted first and then mixed with pesticides. 5. The interval between the use of fungicide spray is 7-10 days. For agents with weak adhesion and poor internal absorption, it should be sprayed again after spraying for 3 hours in case of rain. 6. restore the growth of diseased cotton seedlings as soon as possible, and change the leaves of diseased plants from yellow to green in a short period of time. At the same time of preventing and controlling diseases, the stress resistance of diseased seedlings can be enhanced, and a variety of trace regulators (foliar fertilizer) can be sprayed to regulate.