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Topic: Creeping thistle


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In the News (Thu 3 Dec 09)

  
  ConservationEvidence.com
Creeping thistle Cirsium arvense is a persistent weed commonly affecting grassland conservation areas and grazing land in the UK.
Thistles were topped to a height of about 8-10 cm (using a flail mower at Bronydd Mawr and a drum mower at Marsh Gibbon, both types of machinery resulting in a similar cut).
Creeping thistle densities were reduced from 10.8 shoots/m² to 0.1/m² at Bronydd Mawr and from 11.7 shoots/m² to 0.2 at Marsh Gibbon.
www.conservationevidence.com /ViewEntry.asp?ID=96   (1374 words)

  
 ConservationEvidence.com
Creeping thistle Cirsium arvense can be a persistent perennial weed that causes problems in crop and fallow fields, grasslands and pastures, including those within nature conservation areas.
Thistle sampling: Samples of lower leaves of main shoots were taken in August 1998 to assess the extent of spread of the rust.
Thistle size and number of flower buds and fertile flower heads were recorded monthly in July and August 1998 and from May to August in 1999.
www.conservationevidence.com /ViewEntry.asp?ID=14   (543 words)

  
 Creeping thistle - Weed information - HDRA Weed Management
Large patches of creeping thistle may be formed from a single clone but often contain the shoots of several individual genotypes.
Thistle seedlings are sensitive to drought and early competition for light.
Thistle roots and shoots brought to the surface can be left to desiccate in the wind and sun but the roots can withstand drying down to 20% moisture level.
www.gardenorganic.org.uk /organicweeds/weed_information/weed.php?id=5   (2074 words)

  
 botanical.com - A Modern Herbal | Thistles - Herb Profile and Information
Thistle is the old English name - essentially the same in all kindred languages - for a large family of plants occurring chiefly in Europe and Asia, of which we have fourteen species in Great Britain, arranged under the botanical groups Carduus, Carlina, Onopordon and Carbenia, or Cnicus.
The Scotch Thistle, or Cotton Thistle (Onopordon Acanthium) is one of the most beautiful of British plants, not uncommon in England, by roadsides and in waste places, particularly in chalky and sandy soils in the southern counties.
Which is the true Scotch Thistle even the Scottish antiquarians cannot decide, but it is generally considered to be this species of Thistle that was originally the badge of the House of Stuart, and came to be regarded as the national emblem of Scotland.
www.botanical.com /botanical/mgmh/t/thistl11.html   (4760 words)

  
 Weed control - Wikipedia, the free encyclopedia
He goes on to record that "by early June, the weight of weeds per unit area was twenty times that of the crop, and the weeds had already taken from the soil about half of the nitrogen and a third of the potash which had been applied".
There is also evidence that the roots of some perennials such as couch grass exude allelopathic chemicals which inhibit the growth of other nearby plants.
The most persistent of the perennials are those that spread by underground creeping rhizomes that can regrow from the tiniest fragment.
en.wikipedia.org /wiki/Weed_control   (2458 words)

  
 Cirsium arvense - Wikipedia, the free encyclopedia
Cirsium arvense, also known as the Creeping Thistle or Canada Thistle, is a species of the genus Cirsium, native throughout Europe, Asia and northern Africa.
Creeping Thistle is used as a food plant by the Engrailed, a species of moth.
Several other names have been applied to the species, including Field Thistle, and the very confusing "Canada Thistle" (it is not a native of Canada, being an introduction there).
en.wikipedia.org /wiki/Cirsium_arvense   (276 words)

  
 Canada Thistle
Canada thistle is a creeping perennial that reproduces from vegetative buds in its root system and from seed.
Canada thistle (Cirsium arvense) is an aggressive, creeping perennial weed that infests Crops, pastures, rangeland, roadsides and noncrop areas.
When Canada thistle infestations occur in situations where root growth would be restricted, such as habitats with high water tables, begin mowing when it is 12 to 15 inches tall.
www.ext.colostate.edu /pubs/natres/03108.html   (1405 words)

  
 Canada Thistle
Thistles of the genus Cirsium are distinguished by their plumose pappus from members of the genus Carduus which are known as "plumeless thistles" because of their simple pappus.
Thistles are wonderful, not only as rich nectar sources for butterflies but as host plants.
Thistles of all kinds are devoured by larvae of painted ladies (Vanessa cardui), whereas the swamp metalmark (Calephelis mutica), a state threatened species, is a thistle connoisseur, feeding only on swamp thistle (Cirsium muticum), itself a state threatened species.
www.holoweb.com /cannon/canada.htm   (618 words)

  
 Thistles   (Site not responding. Last check: 2007-11-01)
Gardens bordering fences or fields where creeping thistles are left to grow will be constantly at risk of invasion from this undesirable, native plant.
The best deterrent against allowing creeping thistle from becoming established in your garden is to immediately dig them up them as soon as they appear.
This native plant is said to be the thistle that inspired the heraldic emblem of Scotland, although that has always been a contentious issue.
www.arcadian-archives.com /thistles.htm   (516 words)

  
 NPWRC :: Exotic Plants
In general, Canada thistle is able to recover from most stress by utilizing its root reserves.
However, Beck (1991) pointed out that the key to controlling perennials such as Canada thistle is to stress the plant to reduce the plant's nutrient reserves.
However because of the presence of native thistles in the RMNP biological control is likely not a feasible option.
www.npwrc.usgs.gov /resource/plants/explant/cirsarve.htm   (923 words)

  
 Ohio Perrenial and Biennial Weed Guide - CANADA THISTLE
Canada thistle is a native of southeastern Eurasia that immigrated to North America in the early 1700's, probably as a contaminant of crop seed.
Canada thistle can be distinguished from other spiny thistles by its creeping perennial roots, which extend downward as well as horizontally, and its relatively smooth spineless stems.
Bull thistle is a biennial that forms a leafy rosette during its first year of growth and a flowering stem in the second while Canada thistle is a perennial with a creeping root system that gives rise to new stems.
www.oardc.ohio-state.edu /weedguide/singlerecordframe2.asp?id=1070   (856 words)

  
 Project search results
Background: Creeping thistle (Cirsium arvense L. (Scop.)) is a serious perennial weed of land managed for agriculture, forestry and increasingly nature conservation.
The CEH Countryside Survey showed that between 1978 and 1990 there was a significant increase in the mean cover of creeping thistle from 1% to 10% in fertile grasslands throughout the UK and these high levels of infestation were maintained in the 1998 survey.
Objectives: (i) establish long-term integrated weed management strategies for the control of existing infestations of creeping thistle in grasslands; (ii) determine the potential for grazing management alone to prevent/reduce thistle invasion and spread.
www.iger.bbsrc.ac.uk /Research/Projects/project_search.asp?1878   (443 words)

  
 Cirsium genus   (Site not responding. Last check: 2007-11-01)
Prescribed Fire: Canada thistle may respond both positively and negatively to burning, depending upon the timing of the burn and the competitive nature of the surrounding plant community.
Response of Canada thistle (Cirsium arvense) and leafy spurge (Euphorbia esula) clones to chlorsulfuron, clopyralid, and glyphosate.
Exploitation of Canada thistle by the weevil Rhinocyllus conicus (Coleoptera: Curculionidae) in northern Utah.
www.cdfa.ca.gov /phpps/ipc/weedinfo/cirsium.htm   (3472 words)

  
 Epiblema   (Site not responding. Last check: 2007-11-01)
Found within the stems of Creeping Thistle (Cirsium arvense) in early 2004, the larvae were initially identified as an Epiblema sp - either E.
Neither of these moths are currently known to feed on Creeping Thistle and the information is potentially new to science.
Entomologists throughout the UK were encouraged to look for larvae of both species on Spear Thistle and Knapweed (Centaurea nigra) during the Winter months on the basis of this discovery.
mysite.wanadoo-members.co.uk /eakringbirds/mothsthistlelarvae.htm   (331 words)

  
 Problems solved by the Lazy Dog Tool Company   (Site not responding. Last check: 2007-11-01)
Spear thistle, Docks, Creeping thistle, Ragwort, Bracken, in Permanent and Temporary grass or crops
Spear thistle and Dock in Red Clover (grown for seed).
Creeping thistle, Docks, Spear Thistle in arable and PP
www.yark.co.uk /lazy_dog_tool_company/research_problems.html   (208 words)

  
 Canada Thistle - Biological Control of Invasive Plants in the Eastern United States
Canada thistle was among the most prevalent weeds on Conservation Reserve Program (CRP) land in Minnesota, occurring in 65 to 75% of CRP fields throughout the state.
Canada thistle is native to Europe, parts of North Africa, and Asia south to Afghanistan, Iran and Pakistan, and east to China.
Information on releases of biological control agents against Canada thistle was obtained from the literature and, for the period between 1981 and 1985, from the USDA, ARS database on natural enemy releases in the United States (ROBO at http://www.ars-grin.gov/nigrp/robo.html).
www.invasive.org /eastern/biocontrol/17CanadaThistle.html   (5537 words)

  
 Weed control
The most persistent of the perennials are those that spread by underground creeping rhizome s that can regrow from the tiniest fragment.
These include couch grass, bindweed, ground elder, nettle s, rosebay willow herb, Japanese knotweed, horsetail and bracken, as well as creeping thistle, whose tap roots can put out lateral roots.
Yet another group of perennials propagate by stolon s- stems that arch back into the ground to reroot.
www.nebulasearch.com /encyclopedia/article/Weed_control.html   (2418 words)

  
 SUB Göttingen - Dissertationen - Kluth, Stephanie: Interaktionen zwischen der Ackerkratzdistel, pathogenen Pilzen ...
The influence of thistle age and phenotype on their susceptibility against the rust fungus Puccinia punctiformis was studied in both common garden experiments and field trials on a regional scale.
Artificial inoculation of thistles with the rust resulted in an age-dependent increase in susceptibility in both field experiments and experiments with potted thistles.
Comparing the susceptibility of thistle phenotypes from ten sites around the city of Göttingen, inoculation lead to a site-dependent degree of infection in both field and common-garden experiments, but the local pattern could not be used to predict the regional, between-site pattern.
webdoc.sub.gwdg.de /diss/2003/kluth/index.html   (1207 words)

  
 Canada thistle, Cirsium arvense (Asterales: Asteraceae) @ Forestry Images
Canada thistle is a tall, erect, spiny herbaceous plant that grows to 4 feet tall.
Many species of thistle occur in America, some are invasive and many are native.
Canada thistle is native Europe and Asia and was first introduced accidentally during the 1600s.
www.forestryimages.org /browse/hostimages.cfm?sub=2792   (223 words)

  
 Organic Eprints - 5708: Biologische Regulierung der Ackerkratzdistel [Biocontrol of the creeping thistle]
5708: Biologische Regulierung der Ackerkratzdistel [Biocontrol of the creeping thistle]
Actually no biocontrol method is known for the creeping thistle Cirsium arvense (L.) Scop.
Friedli J, Bacher S (2001): Mutualistic interactions between a shoot-base boring weevil and a rust fungus, two parasites of the weed creeping thistle.
orgprints.org /5708   (237 words)

  
 Cleveland Weeds - Canada Thistle
One way to combat Canada Thistle is to plant the area with competitive plants, such as grass and alfalfa.
Another way is to vigorously pinch or snip the plant as new growth appears (about every 10 days) until the plant dies due to lack of sunlight and the food made by the leaves.
Canada Thistle is also a food source for the engrailed moth.
thisgardenisillegal.com /2006/05/cleveland-weeds-canada-thistle.html   (1310 words)

  
 Creeping Thistle   (Site not responding. Last check: 2007-11-01)
Perennial, creeping rhizomes, tall but will grow as rosette at ground level if grazed
Low soil fertility, Under utilised pasture in summer.
Creeping Thistle is covered by the Weed Act of 1959 and you can be forced by law to eradicate these.
www.denislindsell.demon.co.uk /pasture/weeds/creepingthistleframe.htm   (42 words)

  
 Creeping thistle - recognition and treatment
Dichlobenil applied in early spring, kills emerging shoots for up to a year among established woody plants.
The Spear Thistle is a larger plant with more vicious spines, but does not have creeping roots, and is similarly controlled by the Weeds Act.
Follow these links for further details on Weeds, Weed Removal and Weed Prevention.
www.dgsgardening.btinternet.co.uk /creepthistle.htm   (280 words)

  
 Cirsium arvense
The seed fluff is used as a tinder[106].
The seed of all species of thistles yields a good oil by expression[4].
The creeping thistle is a pernicious garden weed, spreading freely from its aggressive root system[17, K], It can quickly form dense clumps of growth and really does not need to be introduced into the garden.
www.ibiblio.org /pfaf/cgi-bin/arr_html?Cirsium+arvense   (1027 words)

  
 Chapter 17 Canada Thistle - Biological Control of Invasive Plants in the Eastern United States
Females oviposit on the underside of Canada thistle leaves, usually laying about 12 eggs per day.
Using Canada thistle root cuttings transplanted to caged field plots, Ang et al.
Canada thistle may be a difficult target for biological control for two reasons.
www.invasiveplants.net /biologicalcontrol/17CanadaThistle.html   (5537 words)

  
 Invasive Species: Plants - Canada Thistle (Cirsium arvense)
Canada Thistle - Biological Control of Invasive Plants in the Eastern United States
Canada Thistle - Invasive Alien Plant Species of Virginia (PDF
Canada Thistle - Noxious Weeds of Nebraska (PDF
www.invasivespeciesinfo.gov /plants/canthistle.shtml   (490 words)

  
 Thistles, waterbirds   (Site not responding. Last check: 2007-11-01)
Spear thistle has big flowers and looks like the heraldic Scottish Thistle.
As the name suggests, this is a weed that spreads by rhizomes; underground root-like stems.
Marsh Thistle is tall and spindly with wings along the stem.
www.wildyorkshire.co.uk /naturediary/docs/jun29.html   (254 words)

  
 Cirsium arvense (L.) Scop. (Creeping Thistle)
Apion carduorum - a seed weevil (Coleoptera: Apionidae)
Cleonis piger - Large Thistle Weevil (Coleoptera: Curculionidae)
Apion lacertense - a seed weevil (Coleoptera: Apionidae)
www.bioimages.org.uk /html/T542.HTM   (177 words)

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