نبذة مختصرة : Rust disease is a group of plant diseases caused by fungi belonging to the race (order) Pucciniales. This disease is most clearly visible symptoms on the leaves, so it is called leaf rust. Symptoms are characterized by the appearance of reddish-brown spots on the leaves that get bigger and bigger. These spots are usually surrounded by yellow tissue due to chlorosis of leaves. Several studies have proven that brown rust disease in plants, especially leaves, has a very bad impact on fruit yield. The purpose of this study is to study; (1) How does brown rust disease occur on duku leaves? (2) What is the environmentally friendly pest control model for the control of brown rust disease on duku leaves? Type of literature research with a qualitative descriptive approach and analysis with an inductive approach. The results showed that brown rust disease on duku leaves is a disease caused by Hemileia vastatrix fungi, fungi, bacteria and viruses. Environmentally friendly pest control for the control of brown rust disease on duku fruit leaves include; 1) Organic Pesticides, 2) Vegetable pesticides, 3) Integrated pest control, 4) Routine land use. With several environmentally friendly pest control models, pest control against all types of plant diseases, including spots or rust on plants and fruits, including brown rust on duku leaves, will be resolved in the long term without side effects or damage to plants and the environment
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