（植物）叶斑病a plant disease caused by a fungus (= a type of organism that gets its food from decaying material and other living things), by bacteria, or by a virus that creates spots on the leaves
Despite the reports of leaf spot and other diseases, not all farmers are having a bad year. 尽管有叶斑病和其他病害的报道，但并非所有农民今年的日子都不好过。
The plants are resistant to mildew, big bud mite, and leaf spot.