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A herbicide is 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. Some plants produce natural herbicides, such as the genus Juglans (walnuts). They are applied in total vegetation control (TVC) programs for maintenance of highways and railroads. Smaller quantities are used in forestry, pasture systems, and management of areas set aside as wildlife habitat.

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Herbicide — Blogs, Pictures, and more on WordPress

Blogs about: Herbicide. Featured Blog. Pesticides, fresh produce washing is not enough ... Wildlife Services sprays tons of herbicide into Dakota marshes to destroy ...en.wordpress.com/tag/herbicide/

Herbicides — Blogs, Pictures, and more on WordPress

Herbicide: Roundup Highly Toxic ... Herbicides Sold in Santiago ... Composting Industry Threatened by Herbicide Use ...en.wordpress.com/tag/herbicides/

Yardiac.com Outdoor Living and Gardening Blog: Corn Gluten - The ...

Thank you for visiting our Blog – our desire is for this to be an ... The Natural Herbicide ... corn gluten meal as a natural preemergence herbicide, on turf. ...yardiac.blogspot.com/2007/01/corn-gluten-natural-herbicide.h...

Beyond Pesticides Daily News Blog " Blog Archive " Herbicide ...

k williams on Public Comments Needed Now to Ban the Dangerous Herbicide 2,4-D ... Herbicide Contaminates Home Gardens ... Daily News Blog is is proudly ...www.beyondpesticides.org/dailynewsblog/?p=385

LSU AgCenter Rice Research Station

Field tour at station blog field ... Herbicide doing its job. Blog fields doing well. Jazzman is up! ... APRIL 23Three herbicides were sprayed at once in a...lsuagcenterrice.blogspot.com/

Wikipedia About Herbicide

A herbicide is 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. Some plants produce natural herbicides, such as the genus Juglans (walnuts). They are applied in total vegetation control (TVC) programs for maintenance of highways and railroads. Smaller quantities are used in forestry, pasture systems, and management of areas set aside as wildlife habitat.

Herbicides are widely used in agriculture and in landscape turf management. In the U.S., they account for about 70% of all agricultural pesticide use.Kellogg RL, Nehring R, Grube A, Goss DW, and Plotkin S (February 2000), Environmental indicators of pesticide leaching and runoff from farm fields. United States Department of Agriculture Natural Resources Conservation Service. Retrieved on 2007-10-03.

History

Prior to the widespread use of chemical herbicides, cultural controls, such as altering soil pH, salinity, or fertility levels, were used to control weeds. Mechanical control (including tillage) was also (and still is) used to control weeds.

The first widely used herbicide was 2,4-dichlorophenoxyacetic acid, often abbreviated 2,4-D. It was first commercialized by the Sherwin-Williams Paint company and saw use in the late 1940s. It is easy and inexpensive to manufacture, and kills many broadleaf plants while leaving grasses largely unaffected (although high doses of 2,4-D at crucial growth periods can harm grass crops such as maize or cereals). The low cost of 2,4-D has led to continued usage today and it remains one of the most commonly used herbicides in the world. Like other acid herbicides, current formulations utilize either an amine salt (usually trimethylamine) or one of many esters of the parent compound. These are easier to handle than the acid.

2,4-D exhibits relatively good selectivity, meaning, in this case, that it controls a wide number of broadleaf weeds while causing little to no injury to grass crops at normal use rates. A herbicide is termed selective if it affects only certain types of plants, and nonselective if it inhibits a very broad range of plant types. Other herbicides have been more recently developed that achieve higher levels of selectivity than 2,4-D.

The 1950s saw the introduction of the triazine family of herbicides, which includes atrazine, which have current distinction of being the herbicide family of greatest concern regarding groundwater contamination. Atrazine does not break down readily (within a few weeks) after being applied to soils of above neutral pH. Under alkaline soil conditions atrazine may be carried into the soil profile as far as the water table by soil water following rainfall causing the aforementioned contamination. Atrazine is said to have carryover, a generally undesirable property for herbicides.

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News about Herbicide

Grain crop fungicide resistance fightback

Stock & LandIf herbicide resistance isn't a big enough worry, growers now confront another menace - fungicide resistance.http://sl.farmonline.com.au/news/nationalrural/grains-and-cr...

Bill: Ease Agent Orange claims for Navy vets - Navy News, news from Iraq - Navy Times

Navy TimesSaying “time is running out” for blue-water Navy veterans of the Vietnam War who have had difficulty proving their ill health is the result of exposure to the herbicide Agent Orange, the chairman of the House Veterans’ Affairs Committee has reintroduced legislation that would presume sailors who patrolled Vietnam’s shoreline faced the same risk as ground forces.http://www.navytimes.com/news/2009/05/military_agentorange_0...

Israel Stocks: Israel stocks steady; Makhteshim up before report

Market WatchIsraeli stocks were steady on Tuesday, as strength in the real estate sector was offset by weakness among some of the banks.http://www.marketwatch.com/enf/rss.asp?guid=%7B148DC078-AA71...

Ramsey repeals wetland buffer protections

Minneapolis-St. Paul Star TribuneCity Council members say the rare turnaround reflects a shift toward a more conservative council.http://www.startribune.com/local/north/44645452.html

Open door could admit little Aussie 'criminals'

StuffOPINION I'm old enough to remember when you could waltz through Customs at Sydney airport with nary a glance. It was ''Gidday Kiwi, pass straight on through, you're aces with us mate''.http://www.stuff.co.nz/business/opinion/2406823/Open-door-co...

News about Herbicide

Surge of Vietnam vets falling ill, but why now?

Cleveland Plain DealerIn particular, many are developing illnesses that have been linked statistically to the notorious herbicide Agent Orange, which was widely used in Vietnam. Even though some conditions are quite common -- such as diabetes and prostate cancer -- the VA ... http://www.cleveland.com/nation/index.ssf/2009/05/surge_of_v...

North Qld herbicide 'no cancer threat'

Australian Broadcasting Corp.The Federal Government has rejected suggestions that small concentrations of the herbicide atrazine in north Queensland waterways could cause cancer in humans. Concerns have been raised that chemical run-off from farms in the north may have ... http://www.abc.net.au/news/stories/2009/05/06/2561979.htm

Natick residents appeal herbicide use at Lake Cochituate

MetroWest Daily NewsA group of 180 residents appealed the Conservation Commission's vote to let the state Department of Conservation and Recreation use herbicides in the Lake Cochituate's Middle Pond to control invasive Eurasian milfoil. The appeal claims the ... http://www.metrowestdailynews.com/lifestyle/health_and_envir...

Scientists make herbicide-resistant plants

Webindia 123U.S. scientists say they've developed a technique for modifying plant genes that could help provide sustainable food, fuel and fiber supplies. Researchers at the University of Minnesota and Massachusetts General Hospital said their genome engineering ... http://news.webindia123.com/news/Articles/Science/20090506/1...

Wal-Mart evacuated because of suspected gas leak

Peoria Journal StarThe Wal-Mart Supercenter in North Peoria was evacuated Tuesday morning for a suspected gas leak that turned out to be the scent of herbicide being sprayed on a nearby field. Customers and employees were removed from the building at 8915 N. Allen Road ... http://www.pjstar.com/homepage/x529236579/Wal-Mart-evacuated...

Search results for Herbicide

Herbicides: Image, Vantage, Manage Weed Killers

... non-selective, etc.) go to the article about Types of Herbicides. For basic information on lawn care vegetation control products listed here, click on product name or herbicide ... http://www.pestproducts.com/herbicides.htm

herbicide: Definition from Answers.com

herbicide n. A chemical substance used to destroy or inhibit the growth of plants, especially weedshttp://www.answers.com/topic/herbicide

herbicide - definition of herbicide in the Medical dictionary - by the ...

herbicide [er′-, her′bisīd] an agent that is destructive to weeds or causes an alteration in their normal growth. herbicide. a substance that destroys weeds.http://medical-dictionary.thefreedictionary.com/herbicide

Roundup - Wikipedia, the free encyclopedia

Roundup is the brand name of a systemic, broad-spectrum herbicide produced by the U.S. company Monsanto and contains the active ingredient glyphosate.http://en.wikipedia.org/wiki/Roundup

XSAG Buyers-farm chemicals for sale;liberty herbicide,clearout ...

Sellers on XSAG offer farm chemicals for sale,liberty herbicide,clearout herbicide.They also offer tilt fungicide,round up weed grass killer,herbicide sale,farm chemicals buyers ... https://www.xsag.com/
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Hydrothol Information HERBICIDE Hyd...

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BASF Corporation Fraudulently Marke...

BASF Corporation Fraudulently Marked Same Herbicide as Two Different Products at Different Prices Fa...BASF Corporation Fraudulently Marked Same Herbicide as Two Different Products at Different Prices Farmers who purchased the BASF herbicide POAST® may now be eligible for cash...Flash - Video

Common Plant Strains Resistant to H...

Common Plant Strains Resistant to Herbicides - videoSome strains of a common plant are actually becoming tolerant of a popular herbicide.Windows Media - Video

VENEZUELA / COLOMBIA: Ecuador's Raf...

VENEZUELA / COLOMBIA: Ecuador's Rafael Correa suspends Colombia visit in drug rowEcuador's left-wing president-elect, Rafael Correa, on Thursday (December 21) canceled a planned trip to Bogota to protest Colombia's renewed spraying of an herbicide to kill coca...MPEG 4 - Video

Answers for Herbicide

shayne lWhat are the components of commercial herbicide that makes it more effective than organic herbicide?shayne lConventional herbicides have active ingredients (AI's) that have very powerful physiological effects on weed plants. This allows them to be systemic (move through the plant), selective (against grasse...DrakeAfter a herbicide is sprayed, for how long does it linger in the area?DrakeI suggest you wash the cat thourougly.mira aIs herbicide the only way to kill poison ivy?mira aPulling it up is probably the best way to make sure it's gone. Just be sure to wear gloves (preferably rubber ones) and long sleeves, and be careful not to contaminate yourself!What is the most effective green herbicide for spot control of weeds?dog pee I have brown spots all over my lawn from my dog,anything acidic (vinegar) would be the ultimate in green herbicideSenecaWhat exactly is a herbicide? I am looking for something that will kill weeds and insects but not kill plants?SenecaIt would be wiser to use some kind of mulch in your bed than something toxic like herbicide for weeds or insecticide for insects. You can use bark, layers of hay, or even layers of stones. It will p...
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