Prevention and control methods should avoid continuous cropping or seedlings near Paulownia trees. It is necessary to pay attention to the quarantine of the buried root seedlings, and it is forbidden to cut the root ear from the diseased seedlings. Soaking 1 kg to 1.5 kg of dexamethasone per acre before sowing for soil disinfection. 0.3% of the enemy can be used for seed dressing before sowing. Strengthen seedling management, density should be appropriate to facilitate light ventilation; timely watering and fertilization, promote healthy and orderly growth of seedlings, and enhance disease resistance. In the seedling stage, a 200-fold equivalent Bordeaux mixture is sprayed once every half month for prevention. The diseased seedlings were alternately sprayed with 50% thiotriptate 800-fold solution or 70% thiophanate-1000-fold solution every 10 days to 15 days, and sprayed 3 times to 4 times. All had good control effects. Natural Green Tea,Fanning Bulk Tea,Green Tea Extract,Mighty Leaf Green Tea Hunan Junshan Yinzhen Tea Industry Co.,Ltd , https://www.junshan-tea.com
Paulownia blackpox disease prevention
Symptoms The symptoms of Paulownia blackpox are similar to those of anthrax. The lesions on the leaves are dark brown with a diameter of 0.5 mm to 2 mm. The lesions break into perforation in the middle of the lesion and often occur along the veins. Paulownia black spot disease is a fungal disease. It is caused by the infestation of Cyperus rotundus, and the onset is severe from July to August every year.