Matches in DBpedia 2015-10 for { ?s ?p "Elm yellows is a plant disease of elm trees that is spread by leafhoppers or by root grafts. Elm yellows, also known as elm phloem necrosis, is very aggressive, with no known cure. Elm yellows occurs in the eastern United States, and southern Ontario in Canada. It is caused by phytoplasmas which infect the phloem (inner bark) of the tree. Similar phytoplasmas, also known confusingly as 'Elm yellows', also occur in Europe."@en }
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- Elm_yellows comment "Elm yellows is a plant disease of elm trees that is spread by leafhoppers or by root grafts. Elm yellows, also known as elm phloem necrosis, is very aggressive, with no known cure. Elm yellows occurs in the eastern United States, and southern Ontario in Canada. It is caused by phytoplasmas which infect the phloem (inner bark) of the tree. Similar phytoplasmas, also known confusingly as 'Elm yellows', also occur in Europe.".