Elm specialist finds David elm hope for Dutch disease relief
At Morton Arboretum Chicago George Ware, 70, has identified ulmus davidiana or David elm as a potential immune elm. The tree, discovered from Chinese seeds, resists Dutch elm disease and resembles an American elm as it grows, with about 100 David elms in an experimental plot and thousands more in greenhouse flats.
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Ted Gregory
Chicago Tribune
Chicago
George Ware
Ware
Morton Arboretum
United States
Oklahoma Plains
China
Heilongjiang
Canada
Arboretum Star
Ohio
Europe
Dutch elm disease spread and resilient elm research data
The disease can travel fifty feet through root grafts and by elm bark beetles, infecting trees up to a mile from a site. Pruning, burning, and burying affected limbs are used, while uninfested stands may be sprayed. Efforts include seedlings from nurseries, park distributions, and crossbreeding by Gene Smalley, leading to resistant hybrids like American Liberty.
MENTIONED IN THIS ARTICLE
University of Wisconsin
Gene Smalley
Smalley
Bulk shopping frenzy described with humorous overbuying
A narrator details a chaotic spree at a bulk warehouse, confessing oversized purchases from batteries to dog food. The piece riffs on frenzied consumption, past cake ratio, and a fear of storage limits, likening it to old time general stores. Domestic scenes unfold with humorous exaggeration and self awareness.
MENTIONED IN THIS ARTICLE
Forest of Food Giants
Wilson's disease and copper metabolism explained
A reader asks about Wilson's disease a rare inherited disorder disrupting copper metabolism. It causes liver inflammation cirrhosis and brain disease with tremors and behavioral changes. Diagnosis is via blood tests and lifelong treatment with penicillamine is needed.
MENTIONED IN THIS ARTICLE
Wilson
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