High temperature and heavy rain are the necessary conditions for the development of citrus canker disease. It is prone to occur after typhoon at 25°C to 30°C. The main medium is wind and rain. Prevention should be sprayed on the shoots from the main shoots to the old ones and from 20 days after flowering until the disease resistance is reached. The spraying interval should not exceed 12 days. Prevention and control of pests and insects should prevent and control pests such as leaf miners. The use of bactericidal agents such as urinary copper, Thiobacillus copper, copper masters, copper hydroxide, Bordeaux fluid, and agricultural streptomycin for bacterial diseases. After the rain, the harmful bacteria may invade the interior of the tree. The incubation period is 3 to 10 days. After the rain stops, the systemic ulcer drug should be sprayed immediately. X Ray Lead Protective Apron,Lead Protection Aprons,Xray Lead Gown,X Ray Lead Radiation Proof Skirt Longkou Kangxie Medical Instrument Co., Ltd , https://www.kangxiemedical.com
Control the young fruit trees before pruning uniform pruning, and use 920 uniform release, so that "a tip two fat three drugs."
Before the rain, spray inorganic copper preparations. After the summer and autumn rains, canker can occur. Pay close attention to the weather forecast, spray and kill inorganic copper preparations with strong ability before the storm, and reduce the number of ulcer pathogenic bacteria in the orchard environment, which can greatly reduce the incidence of canker disease and spread.