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Topic: Herbicide



  
 Herbicide - Wikipedia, the free encyclopedia
Herbicides are widely used in agriculture and in landscape turf management.
atrazine, a triazine herbicide used in corn and sorghum for control of broadleaf weeds and grasses.
dicamba, a persistent broadleaf herbicide active in the soil, used on turf and field corn.
http://en.wikipedia.org/wiki/Herbicide   (1838 words)

  
 Herbicide Spray Drift
Herbicide spray drift may injure susceptible crops and could cause prohibited residues in the harvested crops.
Herbicides should not be applied when the wind is blowing toward an adjoining susceptible crop or a crop in a vulnerable stage of growth.
Herbicide spray drift is the movement of herbicide from the target area to areas where herbicide application was not intended.
http://www.ext.nodak.edu/extpubs/plantsci/weeds/a657w.htm   (3930 words)

  
 Herbicide Mode of Action and Sugarbeet Injury Symptoms
Herbicides in these families vary greatly in selectivity and may control annual and perennial broadleaf or grass weeds and may be soil or foliar applied.
Sugarbeet plants that survived sulfonylurea herbicide residual in soil and are producing strap-shaped leaves.
Situations may occur in which a crop is injured by a herbicide that is normally not toxic to the crop.
http://ndsuext.nodak.edu/extpubs/plantsci/rowcrops/a1085w.htm   (3183 words)

  
 Herbicide Resistant Weeds
The first report of insects resistant to insecticides was in 1908, of plant pathogens resistant to fungicides in 1940, and of weeds resistant to herbicides (triazines) in 1968.
For major-use crops such as corn, soybeans, and wheat, herbicide resistant crops may be useful where difficult to control weeds or environmental conditions dictate the use of specific herbicides to which the crop is normally susceptible.
However, imidazolinone resistant (IR) corn hybrids are resistant to imidazolinone herbicides and are cross resistant to the sulfonylurea herbicides.
http://www.extension.umn.edu/distribution/cropsystems/DC6077.html   (3635 words)

  
 Fall Herbicide Application
Herbicides that are most effective on perennial weeds follow the flow of food reserves in the phloem from the leaves down to the roots.
Fall herbicide applications will be much more effective if combined with cultural practices such as timely tillage or establishment of competitive crops that stress perennial weeds throughout the growing season and minimize their reproduction over time.
Although some herbicides have residual activity in the soil, herbicides must be applied to actively growing foliage for maximum results.
http://weeds.montana.edu/crop/fall.htm   (1605 words)

  
 ScienCentral Video News: Needing Herbicide
Seventy-one percent of genetically engineered crops planted in 1998 were designed to be resistant to herbicides such as glyphosate; United States Department of Agriculture (USDA) statistics from 1997 show that the use of these soybeans resulted in a 72% increase in the use of glyphosate.
While the tolerance of some morning glories to glyphosate is a naturally occurring trait, geneticists have modified many crops—including soybeans—not to be harmed by the chemical, allowing farmers to spray with it and kill everything but their crops.
He can't get his combine, which is basically his or her harvester, into the crops to harvest the soybeans because the morning glories…will bind up the machine and made it very difficult for them to go through the rows."
http://www.sciencentral.com/articles/view.php3?language=english&type=24119&article_id=218392365&cat=1_2   (747 words)

  
 PLATEAU™ herbicide
PLATEAU herbicide may be applied at a rate of 4 to 8 oz per acre to established centipede grass for the control of annual broadleaf and grass weeds.
Tolerance of desirable grass species to PLATEAU herbicide may be reduced when grasses are stressed due to insect damage, disease, environmental conditions, shade, poorly drained soils or other causes.
PLATEAU herbicide may be used postemergence at a rate of 4 to 12 oz per acre for control of undesirable winter and summer annual and perennial grasses in bermudagrass pastures and hay meadows (see rate and timing recommendations below).
http://www.turffiles.ncsu.edu/pubs/weeds/plateaula.htm   (10176 words)

  
 herbicide articles on Encyclopedia.com
Transportation equipment, apparel, herbicides and fertilizers, electronics, food, machinery, and metal products are among the city's many manufactures.
In agriculture, selective herbicides are often used instead of tillage, or in combination with tillage
organic farming ORGANIC FARMING [organic farming] the practice of raising plants—especially fruits and vegetables, but ornamentals as well—without the use of synthetic pesticides, herbicides, or fertilizers.
http://www.encyclopedia.com/articles/05840.html   (387 words)

  
 Herbicide Selectivity
Herbicide and Nonherbicide Injury Symptoms on Spring Wheat and Barley
An excessive application of a herbicide, due to misapplication, can also injure a tolerant crop by overwhelming the crop's herbicide metabolism and deactivation systems.
The genetics of a plant also affect a plant's tolerance to a herbicide.
http://www.extension.umn.edu/distribution/cropsystems/components/6967_01d.html   (385 words)

  
 WAHRI: Western Australian Herbicide Resistance Initiative
Biotypes of phenoxy herbicide resistant and susceptible wild radish populations were grown under the same environmental conditions and parameters of biomass, flower, colour, and seed production were measured in an attempt to identify distinguishing characteristics of resistant populations.
This study was conducted in 2005 at Salmon Gums where herbicide susceptible plants were placed in a number of locations in both cropping and pasture paddocks and native bush areas to examine if they are able to be cross pollinated by herbicide resistant plants in neighboring areas.
The study examined the extent to which the costs of the most common form(s) of herbicide resistance in WA cropping paddocks can be attributed to higher weed densities affecting crop yield; or whether growers have maintained control of resistant weed populations.
http://wahri.agric.uwa.edu.au/news.html   (1808 words)

  
 Top 10 reasons your preemergence herbicide failed
Herbicides registered for use in nursery crops will not kill existing weeds (except for spray-applied Goal, which is only labeled for conifers or directed sprays).
The highest labeled rate was applied for each product, the herbicides were applied well before any seed germination, and the herbicides were properly incorporated with irrigation.
However, research on sandy soils has shown that if the soil is allowed to dry after the initial irrigation, the herbicide will bind to the soil and will not be prone to moving thereafter.
http://oregonstate.edu/dept/nursery-weeds/feature_articles/top_10/Top_10_reasons.html   (1989 words)

  
 10.30.2002 - Popular weed killer atrazine feminizes native frogs across Midwest, could be impacting amphibian ...
Atrazine has been used on crops since 1956 and currently is the most widely used herbicide in the nation.
Berkeley - Native male leopard frogs throughout the nation's Corn Belt are being feminized by an herbicide, atrazine, used extensively to kill weeds on the country's leading export crops, corn and soybeans, according to a survey conducted by University of California, Berkeley, biologists and reported this week in Nature.
The UC Berkeley scientists also showed that male leopard frogs raised in laboratory tanks contaminated with atrazine develop egg cells in their testes and essentially turn into hermaphrodites.
http://www.berkeley.edu/news/media/releases/2002/10/30_frogs.html   (963 words)

  
 Herbicide Information, Wisconsin Manual of Control Recommendations for Ecologically Invasive Plants
Trees and shrubs should generally be cut at the end of the growing season so that chemicals will be actively absorbed into the stump, although many species may be treated in the winter--follow specific suggestions for individual species.
The Wisconsin Department of Natural Resources does not endorse any particular herbicide or manufacturer, and therefore trade names are not used in the control recommendations.
Read the label of the herbicide(s) you are mixing for the Personal Protective Equipment (PPE) required.
http://www.dnr.state.wi.us/org/land/er/invasive/info/herbicides.htm   (1319 words)

  
 Herbicides: Image, Vantage, Manage Weed Killers
This is a systemic, non-selective herbicide for controlling unwanted grasses, weeds, plants.
Products used to control or eliminate different weeds or unwanted grasses in lawns (turf grasses), fence rows, parking lots and septic or sewer lines.
Controls nutsedge (Yellow Nutsedge, Purple Nutsedge) in certain turf grasses and landscaped areas.
http://www.pestproducts.com/herbicides.htm   (316 words)

  
 Herbicide-
Edited by a recognized leader in the field, Herbicide-Resistant Crops is the first book to cover all of the issues related to the controversial topic of herbicide-resistant crops.
It provides extensive discussions of the modern biotechnological methods that have been used to develop such crops, and reviews the implications - both positive and negative - of developing crops that are resistant to herbicides.
Crop Resistance to Herbicides: Effects on Soil and Water Quality T.B. Moorman and Kyle E. Keller
http://www.floridaplants.com/CR/herbicid.htm   (570 words)

  
 Curtail® herbicide
herbicide is a broad-spectrum broadleaf herbicide for use in small grains, including spring wheat, winter wheat and barley.
Uses for range, pasture, CRP and fallowland are also on the label.
Before using any pesticide, be sure it is registered for use in your state or locality.
http://www.dowagro.com/usag/prod/004.htm   (193 words)

  
 Herbicide Resistant Weeds
Local weed scientists estimate that there are 1,130 sites and more than 66,000 acres infested with herbicide resistant weeds in Oklahoma and they infest corn, roadsides, soybean, and wheat.
The most widespread resistant weed of Oklahoma is Kochia (Kochia scoparia), which infests an estimated 10001-100000 acres and is found primarily in roadsides, and wheat.
Kochia (Kochia scoparia) is the most widespread resistant weed of Oklahoma
http://www.weedscience.org/usa/State.asp?StateID=37   (316 words)

  
 Herbicide definition - Medical Dictionary definitions of popular medical terms
Herbicide: A chemical pesticide designed to control or destroy plants, weeds, or grasses.
Herbicides tend to have wide-ranging effects on non-target species (other than those the pesticide is meant to control or kill).
Herbicide definition - Medical Dictionary definitions of popular medical terms
http://www.medterms.com/script/main/art.asp?articlekey=25547   (191 words)

  
 XSAG Buyers-farm chemicals for sale;liberty herbicide,clearout herbicide,tilt fungicide,round up weed grass ...
Select the type of product you’re looking for (herbicide, fungicide, etc.), click GO, and the site will pull the products listed of that type.
If you want to see multiple products, search by product category.
http://www.xsag.com/Chem/Buyers.Asp   (254 words)

  
 Herbicide - Landscape Management
Q4 offers a single product control option for yellow nutsedge suppression and grassy and broadleaf weed control in established turfgrass areas, and reduces photoxicity on cool-season grass species.
Revised label includes control of broadleaf weeds in newly seeded, sodded or sprigged areas and on stone-covered yards
FMC offers Quicksilver in pre-measured water soluble bag
http://www.landscapemanagement.net/landscape/article/articleList.jsp?categoryId=456   (439 words)

  
 Herbicide Tolerance Levels Higher
The most common escape was to Roundup, but he found examples of all herbicide-tolerant products and some plants exhibited tolerance to two types of herbicide
Friesen planted 33 seed lots – none of which were supposed to be
The resulting plots show some samples had enough escapes to provide a crop of herbicide-tolerant canola after they'd been sprayed out.
http://www.percyschmeiser.com/Tolerance.htm   (427 words)

  
 Herbicides, Diabetes Linked in New Study David Brown / Washington Post 12oct00
Because risk of developing the disease increases with age, the percentage will rise in the future.
However, because people with diabetes often die of other diseases (such as heart disease or kidney failure) that diabetes contributes to, the lack of association doesn't rule out a connection between the dioxin and the disease.
The standards for saying there is "limited/suggestive" evidence for an association between herbicide and disease are far from proof of causation.
http://www.mindfully.org/Pesticide/Herbicides-Diabetes-Linked.htm   (686 words)

  
 New Scientist Breaking News - Ants use herbicide on their gardens
Previous studies have shown that leaf-cutter ants make compost in their nests to grow an edible fungus, while other types of ants keep "herds" of aphids in order to harvest their secretions of nutritious plant juices.
A type of Amazonian ant landscapes its own "garden" by using its own herbicide to kill plants.
New Scientist Breaking News - Ants use herbicide on their gardens
http://www.newscientist.com/article.ns?id=dn8032&feedId=online-news_rss20   (299 words)

  
 Herbicide Manufacturer Directory - Herbicide Exporters, Herbicide Manufacturers, Herbicide Suppliers, Herbicide ...
Manufacturer of fertilizers, pesticides, herbicides, inorganic salts, organic chemicals, catalyzers, veterinary medicine, feed and food additives and fine chemicals.;
Manufacturer of chloro-alkali chemicals, agrochemicals and chemical intermediates; steam power generator.;
Start here to find manufacturers and exporters of Pesticides and Herbicides from China and around the world.
http://hotproducts.alibaba.com/manufacturers-exporters/Herbicide.html   (281 words)

  
 Compendium of Herbicide Adjuvants, 7th Edition, Bryan Young, PSAS, Southern Illinois University.
The increase in the number of adjuvants is a result of: increased market focus on postemergence herbicide applications, blending of adjuvants into a single product for use with specific herbicides, the advancement of science pertaining to herbicide adjuvants, and the successful research and development by adjuvant manufacturers for commercialization of novel adjuvant products.
This Edition is an update since many new products are added annually and others are taken off the market.
The 7th Edition of the Compendium of Herbicide Adjuvants contains 493 entries from 39 companies.
http://www.herbicide-adjuvants.com/index-7th-edition.html   (491 words)

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