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Topic: Glyphosate


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  Glyphosate - Wikipedia, the free encyclopedia
Glyphosate is an aminophosphonic analogue of the natural amino acid glycine and the name is a contraction of glycine, phospho-, and -ate.
Glyphosate is one of the most toxic herbicides, with many species of wild plants being damaged or killed by applications of less than 10 micrograms per plant.
Glyphosate is one of a number of herbicides used by the United States government to spray Colombian coca fields through Plan Colombia.
en.wikipedia.org /wiki/Glyphosate   (1148 words)

  
 glyphosate
Glyphosate is the active ingredient of some of the most common herbicides used in farming and gardening.
While pure Glyphosate has a low acute toxicity (the amount needed to cause death), when it is sold as a commercial herbicide it is combined with surfactants and other ingredients to make it more effective at killing plants.
Glyphosate caused a decrease in the sperm count of rats and an increase in abnormal and dead sperms in rabbits.
www.geocities.com /opaq2001/glyphosate.htm   (1693 words)

  
 EXTOXNET PIP - GLYPHOSATE
Glyphosate acid and its salts are moderately toxic compounds in EPA toxicity class II.
Glyphosate is a broad-spectrum, nonselective systemic herbicide used for control of annual and perennial plants including grasses, sedges, broad-leaved weeds, and woody plants.
Glyphosate itself is an acid, but it is commonly used in salt form, most commonly the isopropylamine salt.
extoxnet.orst.edu /pips/glyphosa.htm   (1332 words)

  
 the Glyphosate threat 1
Phytotoxicity and translocation of Glyphosate in the potato (Solanum tuberosum).
Absorption, translocation and phytotoxicity of Glyphosate in Bulbous Oatgrass (Arrhenatherum elatius var.
69 Roslycky E.B. Glyphosate and the response of the soil microbiota.
www.rag.org.au /modifiedfoods/roundup1.htm   (7385 words)

  
 "Glyphosate and Beneficial Arthropods"   (Site not responding. Last check: 2007-10-08)
Glyphosate formulations have been tested in the laboratory and in the field to determine toxicity to terrestrial arthropods.
The authors of the report concluded that insect communities would not be effected by the use of glyphosate applied to the base of trees in farm forestry.
Influence of glyphosate herbicide on the microflora and mesofauna of a sandy soil in a semi-arid region.
www.biotech-info.net /glyphosate.html   (1637 words)

  
 Glyphosate
Glyphosate bound to soil particles may still be toxic and bioavailable to filter feeders, such as crustaceans and molluscs, and potentially other organisms that ingest significant quantities of soil during normal feeding, including bottom-feeding fish, shorebirds, amphibians, and some mammals.
Glyphosate’s toxicity is compounded by its persistence in the environment.
Glyphosate has been found to inhibit growth (at 50ppm) of 59% of randomly selected soil bacteria, fungal, actinomycete, and yeast isolates; of nine herbicides tested, glyphosate was the second most toxic." This infers that with extensive glyphosate use, soil microbes are killed which degrade glyphosate, thus slowing degradation and increasing persistence.
www.abcbirds.org /pesticides/Profiles/glyphosate.htm   (1123 words)

  
 Glyphosate (CASRN 1071-83-6), IRIS, Environmental Protection Agency
Dietary concentrations of glyphosate were adjusted weekly during growth, and between mating rest periods to achieve dose levels of 0, 3, 10, and 30 mg/kg/day.
Glyphosate was originally classified as C, possible human carcinogen, on the basis of increased incidence of renal tumors in mice.
Glyphosate was not mutagenic for Salmonella, E. coli or Chinese hamster ovary cells.
www.epa.gov /iris/subst/0057.htm   (1706 words)

  
 NRA Review of Glyphosate
This is because glyphosate binds strongly to soil particles and is readily metabolised by soil microorganisms.
The rapid translocation of glyphosate from the foliage of treated plants to the roots, rhizomes and apical meristems results in the total destruction of hard to kill perennial weeds and is one of the main reasons for glyphosate's effectiveness and popularity.
One commented that glyphosate has long been regarded as a "safe" herbicide to use in and near watercourses and several States thought it important that this reputation not be lost when it is chemical additives that appear to be causing the problem.
www.apvma.gov.au /chemrev/glyphosate.shtml   (4696 words)

  
 Glyphosate - EnviroTools.org
Glyphosate is an organic solid of odorless white crystals.
Glyphosate is released to the environment in its use as a herbicide for controlling woody and herbaceous weeds on forestry, right-of-way, cropped and non-cropped sites.
Glyphosate is strongly adsorbed to soil, with little potential for leaching to ground water.
www.envirotools.org /factsheets/contaminants/glyphosate.shtml   (740 words)

  
 Glyphosate is a weed killer used on lawns, grdens, field crops, play fields
Glyphosate is used to kill unwanted plants (weeds) in crop fields, amenity areas and home gardens, and on a global scale it has become the most widely used pesticide(1).
Glyphosate is an organophosphonate or salt of a phosphonic acid.
Studies on effects of different concentrations of glyphosate on chromosome aberrations and chromatid exchange in human and bovine white blood cells revealed ‘a dose-related increase in the percent of aberrant cells’(46), suggesting that ‘either oxidative stress or a mutagenic effect’(47) is induced.
www.ecochem.com /ENN_glyphosate.html   (2280 words)

  
 GLYPHOSATE (PDS 91)
Glyphosate is excreted largely unchanged and the urine is the major route of excretion.
Glyphosate was not genotoxic in a range of in vitro and in vivo tests, except in a test for SCE in human lymphocytes at very high concentrations.
Where the poisoning could be positively attributed to glyphosate, the symptoms recorded were stomach cramps, diarrhoea, vomiting (associated with erosion of the gastrointestinal tract), and in the case of dermal exposure, skin irritation.
www.inchem.org /documents/pds/pds/pest91_e.htm   (2826 words)

  
 About Glyphosate - Monsanto's Roundup
Monsanto claims resistance to glyphosate is unlikely to emerge in the field because it does not persist in soil.
Glyphosate resistant weeds could also arise if there is gene flow between the soybean and a related wild plant or if the soybean survives to emerge as a weed ("a volunteer") in the subsequent crop.
There would be an extra penalty for farmers growing glyphosate resistant crops if glyphosate resistant weeds evolved, because not only would they have to change their weed control practices but they would have paid a premium for the herbicide resistant seed in the first place.
www.safe2use.com /poisons-pesticides/pesticides/organo/glyphosate.htm   (1655 words)

  
 4.17 Glyphosate (T,R)
Glyphosate was evaluated toxicologically by the 1986 JMPR, which allocated an ADI of 0-0.3 mg/kg bw.
Metabolic studies with glyphosate in hydroponically-grown maize, wheat, cotton and soya beans have shown the conversion of glyphosate to AMPA and further degradation in plant tissues.
The limit of determination was 0.05 mg/kg in cotton seed and hay and recoveries of glyphosate and AMPA respectively at 0.05-0.4 mg/kg fortification levels were 66.3-89.4% and 66.0-84.9% in cotton hay, and 56.7-74.8% and 63.4-93.2% in cotton seed.
www.fao.org /docrep/w8141e/w8141e0u.htm   (3501 words)

  
 ISU Weed Science Online - Waterhemp and Glyphosate
The objectives of the research are to determine the level of tolerance/resistance to glyphosate and identify the mechanisms that allow these populations to survive glyphosate.
This research confirms that the ability of the waterhemp from 'problem fields' to survive glyphosate is due to genetic differences among the populations since all plants were grown under identical conditions and treated at the same growth stage.
While the waterhemp populations being studied have a higher level of tolerance to glyphosate than normally seen in waterhemp, the farmers managing these problem fields are still relying on glyphosate to manage the waterhemp.
www.weeds.iastate.edu /mgmt/2001/glyphosatewaterhemp.htm   (1309 words)

  
 Herbicide Profile-Glyphosate
Glyphosate is practically nontoxic by ingestion, with a reported acute oral LD50 of 5600 mg/kg in the rat.
The 48-hour LC50 for glyphosate in Daphnia (water flea), an important food source for freshwater fish, is 780 mg/L. Some formulations may be more toxic to fish and aquatic species due to differences in toxicity between the salts and the parent acid or to surfactants used in the formulation.
Breakdown in water: In water, glyphosate is strongly adsorbed to suspended organic and mineral matter and is broken down primarily by microorganisms.
www.ipmofalaska.com /files/Glyphosate.html   (1172 words)

  
 Glyphosate Herbicide Found in Many Midwestern Streams, Antibiotics Not Common
Glyphosate (tradenames include Roundup@, Touchdown@, Rodeo@, and others) is an organic solid of odorless white crystals.
Glyphosate is currently the world's best selling herbicide, used in more than 90 countries and on more than 150 crops.
Glyphosate use in agriculture has tripled since 1997, largely due to the increasing popularity of Roundup Ready® crops (including corn and soybeans), which have been genetically modified to tolerate glyphosate.
toxics.usgs.gov /highlights/glyphosate02.html   (709 words)

  
 Glyphosate Found in Wastewater Discharged to Streams
Glyphosate is the most widely used herbicide in the world, and is widely used to control weeds in both agricultural fields and in urban and suburban settings.
Glyphosate was more frequently detected in the wastewater (27%) and in the downstream samples (20%) than it was in the upstream samples (12%).
The discharge of the streams and the wastewater outfalls in this study were generally lower when compared to the discharge of the streams in a study of the occurrence of glyphosate in streams draining agricultural areas, so further research is needed to determine the relative loads (mass) of glyphosate from various sources.
toxics.usgs.gov /highlights/glyphosate_wastewater.html   (492 words)

  
 Sorting Through the Glyphosate Jungle
Glyphosate was originally produced exclusively by Monsanto, and it was formulated as a 4 lb/gal isopropylamine salt.
The salt is held to the glyphosate molecule by weak bonds.
Thus, the glyphosate that reaches the leaf surface is often not associated with the salt it was formulated with.
www.ces.ncsu.edu /martin/glyphosate.html   (1006 words)

  
 QuikPro Roundup, Dry Concentrated Herbicide, Box of Roundup Quickpro
Glyphosate and Diquat (the active ingredients in Quikpro herbicide) do not remain in the soil for such long periods.
Both Roundup Pro Dry and Quikpro contain Glyphosate, a systemic non-selective herbicide that enters the targeted plant through the leaves and translocates (moves through the plant) to the plant roots.
In Quikpro, the active ingredients are 73.30% Glyphosate and 2.90% Diquat.
www.pestproducts.com /herbicides/quikpro.htm   (850 words)

  
 Glyphosate Toxic & Roundup Worse
Glyphosate kills plants by inhibiting the enzyme, 5-enolpyruvoyl-shikimate-3-phosphate synthetase (EPSPS), essential for the formation of aromatic amino acids such as phenylalanine, tyrosine and tryptophan; which leads onto vitamins and many secondary metabolites such as folates, ubiquinones and naphthoquines.
However, glyphosate acts by preventing the binding of phosphoenol pyruvate to the active site of the enzyme, and phosphoenol pyruvate is a core metabolite present in all organisms; thus it has the potential to affect other metabolic pathways.
In this study, glyphosate and its surfactant in Roundup were also found to act in synergy to increase damage to the liver [5].
www.i-sis.org.uk /GTARW.php   (1029 words)

  
 Glyphosate N-Acetyl GAT Regeneration Exodus 24:18
Glyphosate tolerant Arabidopsis plants were achieved with a fourth iteration improved gat gene.
An alternative to the insensitive target approach used to develop glyphosate tolerant crops is to engineer crops to produce an enzyme capable of detoxifying the herbicide.
After glyphosate application at rates more than 20-fold higher than those used by farmers for weed control, the tobacco plants were morphologically normal and fertile.
www.webspawner.com /users/gatregeneration   (2093 words)

  
 glyphosate resistance - weed control - herbicides
Weed-control experts acknowledge that glyphosate resistance concerns exist and are warning soybean growers to act now to protect the integrity of this chemistry.
The geographical extent of possible glyphosate resistance and the number of weed species involved are somewhat murky.
However, glyphosate resistance seems to occur primarily in weed populations of horseweed (marestail) or waterhemp.
farmindustrynews.com /mag/farming_saving_glyphosate   (1820 words)

  
 Glyphosate strategies for corn
The glyphosate system on corn is a little different than on soybeans.
Tank mixtures of glyphosate with residual herbicides can carry weed control longer throughout the season to limit any interference with corp yield,” he says.
According to Tom Mueller, professor of plant sciences, University of Tennessee — Knoxville, putting down a residual for glyphosate use in corn is the key to avoiding a repeat of weed resistance to Pursuit in soybeans.
apply-mag.com /mag/farming_glyphosate_strategies_corn/index.html   (1071 words)

  
 Glyphosate Fact Sheet
Glyphosate is a broad spectrum herbicide used to kill crop weeds.
They argue that glyphosate will replace other, more environmentally damaging herbicides, because only glyphosate need be used rather than several different compounds.
Yates W E., Akesson N B and Bayer D E (1978) Drift of glyphosate sprays applied
www.portaec.net /library/pollution/pesticide/glyphosate_fact_sheet.html   (1654 words)

  
 Glyphosate - toxicity, ecologicial toxicity and regulatory information
Glyphosate - toxicity, ecologicial toxicity and regulatory information
Glyphosate - Identification, toxicity, use, water pollution potential, ecological toxicity and regulatory information
Quickview Toxicity Summary for Glyphosate from U.S. EPA IRIS Database
www.pesticideinfo.org /Detail_Chemical.jsp?Rec_Id=PC33138   (915 words)

  
 GLYPHOSATE / ROUND-UP SPRAYING
The glyphosate, Roundup, is a noncholinesterase inhibiting organophosphorous herbicide.
Monsanto says that it will not affect people because glyphosate works on biochemical pathways that do not exist in people, but this is a very narrow, self-serving position (as is everything that Monsanto and the other agribusiness companies put out).
We should organize against this stuff and stop it.
www.thepowerhour.com /news/glyphosate_roundup.htm   (2480 words)

  
 Glyphosate, isopropylamine salt - toxicity, ecologicial toxicity and regulatory information
Glyphosate, isopropylamine salt - Identification, toxicity, use, water pollution potential, ecological toxicity and regulatory information
Chemical Identification and Use for Glyphosate, isopropylamine salt
with 2-propanamine (1:1), Glyphosate (as isopropylammonium salt of glyphosate), Glyphosate (present as isopropylamine), glyphosate (sel d'isopropylamine), glyphosate acide (sel d'isopropylamine), Glyphosate IPA Salt, Glyphosate, isopropylamine salt, Glyphosate-isopropyl ammonium, Glyphosate-isopropylamine salt, Glyphosate-isopropylammonium, Glyphosateisopropylaminesalt, Isopropylamine glyphosate (N-(phosphonomethyl)glycine), Isopropylamine Salt of Glyphosate, Isopropylamine salt of N-(phosphonomethyl) glycine, MON 139, MON 39, N-(Phosphonomethyl)glycine, isopropylamine salt, Rodeo, Rondo, Roundup
www.pesticideinfo.org /Detail_Chemical.jsp?Rec_Id=PC33139   (916 words)

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