The plum tree coal disease, also known as coal disease, is an important disease on the late fruits and leaves of the plum tree, which seriously pollutes the leaves and fresh fruit, and affects the appearance, quality and commodity value of the fresh fruit. At present, it is in a season of frequent rainfall, which can easily induce the occurrence and spread of the disease. Fruit farmers all over the country must do a good job in prevention and control. Control measures: 1. Agricultural control: Strengthen the management of fertilizer and water in Liyuan, rationally apply fertilizer, timely pruning, and do a good job of trench drainage to prevent moisture retention, reduce humidity, and improve ventilation and light transmission conditions. 2. Chemical control: (1) Preventing and controlling pests such as aphids, whiteflies, and ticks at the right time is the key to suppressing the occurrence of coal diseases. It can be sprayed with 5% Frigoxygen suspension 2000 times solution or 25% Rinse solution 1000 times solution. (2) 62.5% Xiansheng WP or 50% Tuzet WP 1000x or 20% Triadimefon EC 1000x can be used at the beginning of the disease, spraying once every 10 days or so, spraying 2-3 times continuously. Times Antiparasitic Drugs,Tribendimidine Enteric Coated,Intestinal Anthelmintic Drug,Intestinal Anthelmintic Tablet SHANDONG XINHUA PHARMACEUTICAL Co., Ltd. , https://www.sdxinhuapharm.com