Dictionary Meaning and Definition on 'Herbicide'
n : a chemical agent that destroys plants or inhibits their
growth [syn: weedkiller, weed killer]
Wikipedia Meaning and Definition on 'Herbicide'
A herbicide, commonly known as a weedkiller, is a type of pesticide used to kill unwanted plants. Selective herbicides kill specific targets while leaving the desired crop relatively unharmed. Some of these act by interfering with the growth of the weed and are often synthetic "imitations" of plant hormones. Herbicides used to clear waste ground, industrial sites, railways and railway embankments are non-selective and kill all plant material with which they come into contact. Smaller quantities are used in forestry, pasture systems, and management of areas set aside as wildlife habitat.
Some plants produce natural herbicides, such as the genus Juglans (walnuts), or the tree of heaven; the study of such natural herbicides, and other related chemical interactions, is called allelopathy.[See more about Herbicide at Dictionary 3.0 Encyclopedia]
Words and phrases related to 'Herbicide'
Herbicide Sample Sentences in News
- As Dow seeks growth, new Enlist crop/chemicals seen as key
Dan Kittle has spent more than a decade waiting for this day. As the man in charge of research and development at Dow AgroSciences, the unit of Dow Chemical Co that develops agricultural seeds and pesticides, Kittle remembers the "big shock" when rival Monsanto Co unveiled a genetically modified seed in 1996 designed to be used in combination with a spec Read more on this news related to 'Herbicide'
- Tackling resistant weeds
VIDEO: AFTER a lupin crop totally failed due to problems with herbicide resistant ryegrass, these farmers decided they had to tackle the problem head on. Read more on this news related to 'Herbicide'
- Chemicals Are Creating Frightening New Superweeds. The 'Solution'? More Chemicals
Palmer amaranth, also known as pigweed, has become herbicide-resistant and is exactly the kind of “superweed” that keeps farmers and weed specialists like Larry Steckel, Ph.D., of the University of Tennessee up at night. They’re dealing with it by creating a layer cake of herbicides that include glyphosate, dicamba, atrazine, gramoxone, 2,4-D, and more, spre Read more on this news related to 'Herbicide'