释义 |
ash dieback noun[ U ] uk /ˌæʃ ˈdaɪ.bæk/ us /ˌæʃ ˈdaɪ.bæk/ a disease caused by a fungus that slowly kills ash trees (= tall trees with smooth, grey bark (= outer covering) and seeds shaped like wings): Ash dieback causes a general thinning of foliage, and death of branches from the tree top down. An ash dieback survey showed that 80-90 percent of the trees in some areas are now affected. The fungus that causes ash dieback originated in Asia. A survey of hedgerow trees found a correlation between ash dieback, acidity, and sulphur. SMART Vocabulary: related words and phrases Plant pathology anthracnose antifungal apple scab auxin avirulent canker dry rot Dutch elm disease etiolated excrescence fungicidal fungicide leaf scorch leaf spot nodal organophosphate pesticide potato blight scald sterility
Related word
dieback |