The celery spot blotch, also known as leaf blight and late blight, is an important disease of celery in winter and spring protected areas and needs to be prevented and treated in time.
Control methods 1. Remove diseased bodies in time, collect seeds from disease-free and disease-free plants, carry out 2-3-year rotations, and disinfect seeds, soak or seed with Greenhenge No. 1 or Green Hermitage. 2. Selection of resistant varieties: such as Jinnan celery, celery 3, Chunfeng and so on. 3. Agricultural control: Clean the garden, timely removal of diseased leaves. Apply organic manure as base fertilizer, pay attention to the application of boron fertilizer, strengthen field management, cultivate strong seedlings, and strengthen the disease resistance of plants. 4. Shelters are cultivated in protected areas. Attention should be paid to ventilation, cooling, and humidity, and appropriate amount of watering, which can meet the needs of growth and development of celery, and can also prevent the occurrence of pathogenic bacteria. 5. Pharmacy control: early disease prevention when there is no disease, 3-4 cm in the seedling spray protection; disease prevention and early application of pesticides. (1) Smoke prevention and treatment: 45% of chlorothalonil smoke agent 200-250 grams, or 15% of anti-virus smoke agent 300-400 grams, or 15% of baflumide smoke agent 300 grams. (2) dusting: acres spray 5% chlorothalonil dust or 5% antimony dust powder 1000 grams. (3) Spraying: 75% chlorothalonil wettable powder for water 600 times, or Green Hunter II 800 times for prevention and treatment. Spray once every 7-10 times, control 2-3 times in a row, and stop using drugs five days before harvest.
Active Pharmaceutical Ingredient,Mupirocin Calcium,Sodium Fusidate Ointment,Fusidic Acid Ointment
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