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herbicide
(redirected from weed killer)

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.
herbicide
[er′-, her′bisīd]
an agent that is destructive to weeds or causes an alteration in their normal growth.

herbicide [her´bĭ-sīd]
an agent that is destructive to weeds or causes an alteration in their normal growth.

herbicide
a substance that destroys weeds. A large number of chemical compounds are used as general and selective herbicides. Most of them have very low toxicity because their availability to animals on recently sprayed pasture is an obvious toxic hazard. Most poisoning incidents arise when animals have accidental access to large volumes of the agent, e.g. if there has been a spillage. The well-known herbicide groupings are bipyridyls, chlorinated acids, dinitro compounds, phenoxyacid derivatives, thiocarbamates and triazines.


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From The Santa Fe New Mexican November 15, 1959: New York-- The chemist whose laboratory experiments disclosed that a weed killer used on some cranberry crops produced cancer in rats said last night the tainted berries were not dangerous to humans.
The surprising solution turned out to be a common weed killer.
Previously hospital porter Richard Pastewski had a crop of more than 100 dahlias ruined when weed killer was sprayed on them.
 
 
 
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