How to control diseases and insect pests when planting cotton?

How to control diseases and insect pests when planting cotton? When should I start? Strict disinfection of seeds strongly advocates the purchase and selection of foamed acid depilation, selection, use of high-efficiency fungicides and insecticide coating, good quality coated seeds; all cotton fields that do not use coated seeds, the cotton seeds used must also use high-efficiency fungicides to mix or soak the seeds. Sowing general cotton fields at the right time, it is appropriate to sow seeds when the ground temperature of 4 cm is stable at 14 degrees Celsius. Sowing is appropriate when the soil temperature of 5 cm in alkaline cotton field is stable at 15-16 degrees Celsius. To strengthen the field management of cotton at seedling stage, plastic film cotton should timely seal and release seedling holes in cotton fields with dry weather and poor soil moisture, in order to preserve soil moisture; when the soil moisture under the film is high, and in case of overcast and rainy days, the time of sealing and releasing seedling holes can be postponed appropriately, and the seedling holes can be sealed and released again when the soil under the film is loose and the soil temperature is suitable, so as to disperse moisture and reduce diseases. In the open cotton field, we should loosen the soil and keep heat in time, preserve soil moisture in case of drought, disperse soil moisture in case of waterlogging, and loosen the soil near the seedlings; grasp the timely determination of seedlings, complete the seedlings, and fix the seedlings at one time when they grow 1 or 2 true leaves, so as to facilitate the individual development of cotton seedlings and enhance the ability of disease resistance. Chemical control, after the nutritious strong seedlings were fixed, the cotton seedlings were sprayed with fungicides and high efficiency foliar fertilizer. At the beginning of cotton seedling disease, you can spray "carbendazim" or carbendazim or methyl topiramate, add 0.2% potassium dihydrogen phosphate, or get pure rare earth nutrients. The peak of the disease can be sprayed with 2500 times malodorous Ling and 3500 times Tianfengsu. Cotton seedlings with serious disease can be irrigated with 1000 times of "bacteria" alone. In the seedling stage, the cotton seedling can be controlled once every 7-10 days and continuously for 2-3 times, which can reduce the harm, reduce the loss and basically ensure the normal growth of cotton seedlings. Click to get massive cotton planting technology click to get massive grain and oil crop planting technology