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herbicide
(redirected from Contact herbicide)

   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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New legislation means only contact herbicides can be used - which tackle weeds once they become visible, and the council has teamed up with Nomix Enviro Ltd, who will spread weedkiller in spring, mid and late summer.
If you have crabgrass in your lawn, now is the time to kill it with contact herbicide or scrape or dig it out with a sharp-edged hoe or shovel.
If they are annual weeds - chickweed or nettles - use contact herbicide such as Weedol.
 
 
 
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