At present, cotton in Tianjin is in the seedling stage. Due to the large coefficient of weather change this month, the temperature is high and low, which affects the growth of freshly uncovered cotton seedlings, and the emergence of cotton seedling blight disease began to occur. Experts from the Weather Meteorological Service Center of the Meteorological Bureau introduced that cotton farmers should be prevented and controlled in time. According to reports, the main cotton-producing areas of cotton seedlings showed symptoms of yellow blight or yellow-brown necrotic spots near the base of the stem. If it is not controlled in time, it will rapidly expand and become brown and contracted and necrotic around the young stem until the diseased seedlings are erect and wilting and die. According to experts, this is the best period of prevention and treatment of cotton blight in early June. It is recommended that foliar fertilizer should be sprayed to increase its disease resistance, remove diseased plants in time, and reduce the spread. Especially in the initial stage of the disease, 80% of the WP wettable powder 1000 times solution was used to irrigate the roots, or 50% carbendazim WP 500-800 times were used to spray the cotton seedlings 2 or 3 times.
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