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What's the "(C4 carbon fixation)" thing about ? What does it have to do with the fact that we're talking about a "warm-season plant" ? ---
Almost all warm-season plants have the Kranz leaf anatomy (C4 carbon fixation). Why is this important? When scientists say a warm-season plant, this means this plant can tolerate high temperatures, are more water use efficient, are more nitrogen use efficient than cool-season plants and do not photorespire. The management and growth habits of warm-season grasses and cool-season grasses are different.
"Grazing sheep and horses on monoculture swtichgrass stands should be avoided." Because ?
- Fair point, I've removed this. I trust that anyone who replaces it will cite a source.
I agree, this article makes some interesting statements (eg. 1000 gallons of ethanol per acre), but without references it makes the statement feel meaningless. What other references on the ethanol yield per acrea for this stuff exist? Can it be used to make biodeisel as well?
Thirded. The "1000 gallons" statement appeared after the 2006 State of the Union address. I'm going to have to call shenanigans ont aht one, unless we can see some references.
---
Is that "1000 gallon of ethanol per acre" per year? per harvest?
---
There was an article on NPR tonight (February 1, 2006; http://www.npr.org/templates/story/story.php?storyId=5183608). An expert on switchgrass (David Bransby, professor of energy crops at Auburn University) stated it can produce 5-10 tons/acre and "at least 100 gallons of ethanol per ton" with the best technologies. Dsm 07:19, 2 February 2006 (UTC)
The references section included:
and
... neither of which seem particularly relevant. The latter, in fact, doesn't even mention "switchgrass". I've zapped them on this basis. mdf 22:38, 2 May 2006 (UTC)
Total energy in the universe is conserved switchgrass energy comes from the sun photosynthesis "He argues that for every unit of energy input, switchgrass yields four units out. The viability of switchgrass-derived biofuel as an alternative fuel remains contentious." —The preceding unsigned comment was added by 68.252.32.31 ( talk • contribs) 02:56, 3 December 2006 (UTC).
The question / comments below come from "wd0dyg@hotmail.com" :
If switchgrass can be clipped and used to produce ethanol, then how about using ordinary grass clippings from people's lawns? It gets clipped anyways. Maybe there are more grass clippings available than can be used for composting alone. Maybe more ethanol is more valuable than any composting. Grass clippings might be more useful than a person realizes. Maybe city waste and sanitation will have to forbid people from using the garbage for their grass clippings and make it mandatory to make all of their grass clippings available for collection sites. The people in charge of the collection sites (with more grass than ever) can determine how much is used for composting and how much is used for the production of ethanol.
This article reads like someone's school project, as it appears from the above section. I have tagged it, and there needs be a thorough copyedit linking the references that don't exist etc., a thorough edit of the tone...this is an encyclopedia not a research paper or essay, the scope of the article needs to be expanded to include the importance beyond the US and it's biofuel needs. Twunchy ( talk) 06:01, 20 May 2008 (UTC)
I finished converting all the remaining manually-edited references into footnotes and citation templates. I learned a few things about switchgrass in the process. Next I will edit some of the text in the article (for example, to comply with WP:MOS#Avoid first-person pronouns), and possibly change the nesting of sections a bit (for example, most of the subsections of the "Background" section could probably be separate sections rather than subsections). I also noticed that switchgrass appears in several other articles on Wikipedia:
and now that I know something about switchgrass, it will be worthwhile to check what the other articles say about it. Often on Wikipedia, different people write about the same thing in different articles, without necessarily being aware of each other's work. The result can be gaps and inconsistencies. At a minimum, we should link the first instance of any unobvious jargon terms to articles that define them, if such articles exist. Sometimes this requires changing a jargon term to the most standard and specific synonym. An example is this diff, in which the previous contributor referred to "special furnaces" which turned out to mean pellet stoves, so I added the link. (See: Wikipedia:Build the web for the relevant guideline.) -- Teratornis ( talk) 07:47, 30 May 2008 (UTC)
{{
cite journal}}
: Unknown parameter |coauthors=
ignored (|author=
suggested) (
help){{
cite web}}
: Unknown parameter |month=
ignored (
help){{Wikify}}
link that tries to provide a pre-filled {{
Cite journal}} template call that you can copy and paste into a
footnote. Sometimes it actually works. See
User:Teratornis/Notes#Google Scholar enhanced with the Wikipedia citation assistant for my dabblings. The Miscanthus article also needs a lot of work. I still want to edit the Switchgrass article some more to remove the first person stuff and generalize the U.S.-centric focus. It's OK to write about stuff in the U.S. but it's not OK for the article to assume that all the readers are in the U.S. Fixing that is not too hard, with no loss of content, I just have to get around to it. --
Teratornis (
talk)
02:06, 6 June 2008 (UTC)
hey i got it to work, cool, thanks SoilMan2007 ( talk)
Thanks, Teratornis
I removed the Seed suppliers section, because:
I userfied the Seed suppliers section at User:Pvirgatum/Sandbox. Anyone who is new to Wikipedia should read Wikipedia: The Missing Manual. -- Teratornis ( talk) 00:39, 12 March 2009 (UTC)
This article: http://www.biomassmagazine.com/article.jsp?article_id=3379 has some new information on pests of switchgrass. Smartse ( talk) 13:19, 4 January 2010 (UTC)
67.190.27.217 ( talk) 02:17, 30 November 2011 (UTC)
It seems like it must have been incredibly rich habitat when it was pervasive. Almost like a grass jungle. Could increased agricultural use help various animal populations?
67.190.27.217 ( talk) 02:19, 30 November 2011 (UTC)
Otherwise, why is there such a well-cited, positive reference to corn? It doesn't seem to make very much sense; if people want to read about corn, they can follow a link or something. — Preceding unsigned comment added by 160.39.222.232 ( talk) 23:30, 12 February 2012 (UTC)
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This is the
talk page for discussing improvements to the
Panicum virgatum article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
![]() | This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||||||||||||||||||
|
What's the "(C4 carbon fixation)" thing about ? What does it have to do with the fact that we're talking about a "warm-season plant" ? ---
Almost all warm-season plants have the Kranz leaf anatomy (C4 carbon fixation). Why is this important? When scientists say a warm-season plant, this means this plant can tolerate high temperatures, are more water use efficient, are more nitrogen use efficient than cool-season plants and do not photorespire. The management and growth habits of warm-season grasses and cool-season grasses are different.
"Grazing sheep and horses on monoculture swtichgrass stands should be avoided." Because ?
- Fair point, I've removed this. I trust that anyone who replaces it will cite a source.
I agree, this article makes some interesting statements (eg. 1000 gallons of ethanol per acre), but without references it makes the statement feel meaningless. What other references on the ethanol yield per acrea for this stuff exist? Can it be used to make biodeisel as well?
Thirded. The "1000 gallons" statement appeared after the 2006 State of the Union address. I'm going to have to call shenanigans ont aht one, unless we can see some references.
---
Is that "1000 gallon of ethanol per acre" per year? per harvest?
---
There was an article on NPR tonight (February 1, 2006; http://www.npr.org/templates/story/story.php?storyId=5183608). An expert on switchgrass (David Bransby, professor of energy crops at Auburn University) stated it can produce 5-10 tons/acre and "at least 100 gallons of ethanol per ton" with the best technologies. Dsm 07:19, 2 February 2006 (UTC)
The references section included:
and
... neither of which seem particularly relevant. The latter, in fact, doesn't even mention "switchgrass". I've zapped them on this basis. mdf 22:38, 2 May 2006 (UTC)
Total energy in the universe is conserved switchgrass energy comes from the sun photosynthesis "He argues that for every unit of energy input, switchgrass yields four units out. The viability of switchgrass-derived biofuel as an alternative fuel remains contentious." —The preceding unsigned comment was added by 68.252.32.31 ( talk • contribs) 02:56, 3 December 2006 (UTC).
The question / comments below come from "wd0dyg@hotmail.com" :
If switchgrass can be clipped and used to produce ethanol, then how about using ordinary grass clippings from people's lawns? It gets clipped anyways. Maybe there are more grass clippings available than can be used for composting alone. Maybe more ethanol is more valuable than any composting. Grass clippings might be more useful than a person realizes. Maybe city waste and sanitation will have to forbid people from using the garbage for their grass clippings and make it mandatory to make all of their grass clippings available for collection sites. The people in charge of the collection sites (with more grass than ever) can determine how much is used for composting and how much is used for the production of ethanol.
This article reads like someone's school project, as it appears from the above section. I have tagged it, and there needs be a thorough copyedit linking the references that don't exist etc., a thorough edit of the tone...this is an encyclopedia not a research paper or essay, the scope of the article needs to be expanded to include the importance beyond the US and it's biofuel needs. Twunchy ( talk) 06:01, 20 May 2008 (UTC)
I finished converting all the remaining manually-edited references into footnotes and citation templates. I learned a few things about switchgrass in the process. Next I will edit some of the text in the article (for example, to comply with WP:MOS#Avoid first-person pronouns), and possibly change the nesting of sections a bit (for example, most of the subsections of the "Background" section could probably be separate sections rather than subsections). I also noticed that switchgrass appears in several other articles on Wikipedia:
and now that I know something about switchgrass, it will be worthwhile to check what the other articles say about it. Often on Wikipedia, different people write about the same thing in different articles, without necessarily being aware of each other's work. The result can be gaps and inconsistencies. At a minimum, we should link the first instance of any unobvious jargon terms to articles that define them, if such articles exist. Sometimes this requires changing a jargon term to the most standard and specific synonym. An example is this diff, in which the previous contributor referred to "special furnaces" which turned out to mean pellet stoves, so I added the link. (See: Wikipedia:Build the web for the relevant guideline.) -- Teratornis ( talk) 07:47, 30 May 2008 (UTC)
{{
cite journal}}
: Unknown parameter |coauthors=
ignored (|author=
suggested) (
help){{
cite web}}
: Unknown parameter |month=
ignored (
help){{Wikify}}
link that tries to provide a pre-filled {{
Cite journal}} template call that you can copy and paste into a
footnote. Sometimes it actually works. See
User:Teratornis/Notes#Google Scholar enhanced with the Wikipedia citation assistant for my dabblings. The Miscanthus article also needs a lot of work. I still want to edit the Switchgrass article some more to remove the first person stuff and generalize the U.S.-centric focus. It's OK to write about stuff in the U.S. but it's not OK for the article to assume that all the readers are in the U.S. Fixing that is not too hard, with no loss of content, I just have to get around to it. --
Teratornis (
talk)
02:06, 6 June 2008 (UTC)
hey i got it to work, cool, thanks SoilMan2007 ( talk)
Thanks, Teratornis
I removed the Seed suppliers section, because:
I userfied the Seed suppliers section at User:Pvirgatum/Sandbox. Anyone who is new to Wikipedia should read Wikipedia: The Missing Manual. -- Teratornis ( talk) 00:39, 12 March 2009 (UTC)
This article: http://www.biomassmagazine.com/article.jsp?article_id=3379 has some new information on pests of switchgrass. Smartse ( talk) 13:19, 4 January 2010 (UTC)
67.190.27.217 ( talk) 02:17, 30 November 2011 (UTC)
It seems like it must have been incredibly rich habitat when it was pervasive. Almost like a grass jungle. Could increased agricultural use help various animal populations?
67.190.27.217 ( talk) 02:19, 30 November 2011 (UTC)
Otherwise, why is there such a well-cited, positive reference to corn? It doesn't seem to make very much sense; if people want to read about corn, they can follow a link or something. — Preceding unsigned comment added by 160.39.222.232 ( talk) 23:30, 12 February 2012 (UTC)
Hello fellow Wikipedians,
I have just modified 2 external links on Panicum virgatum. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
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(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 00:28, 9 September 2017 (UTC)