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blight
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blight

Any of a number of plant diseases caused mainly by parasitic species of fungus, which produce a whitish appearance on leaf and stem surfaces; for example, potato blight Phytophthora infestans. General damage caused by aphids or pollution is sometimes known as blight.

In 1998 a new virulent strain of P. infestans, US-8, was decimating potato and tomato crops throughout the USA and eastern Canada, proving to be resistant to previously effective fungicides.



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? Mentioned in ? References in periodicals archive
 
From hugs and blights to fuel-laden, tinder-dry forests, Mother Nature is sounding a wake-up call that we'd all do well to heed.
Nastiness in the Woods by American Forests
Once an area is declared blighted and a project area established, CRAs at times contribute to blight problems by encouraging the development of shopping malls which pull trade away from mom-and-pop retailers and drive them out of business, further deteriorating troubled areas or creating new blights, the grand jury found.
CRAs create rather than cure blight, grand jury charges by Rackham, Anne / Los Angeles Business Journal
But decades of study didn't discover the small viruses thought to cause at least some of these blights.
Major plant scourge at last identified by Science News
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