Featured Research

from universities, journals, and other organizations

Elevated Carbon Dioxide Boosts Invasive Nutsedge Plants

Date:
July 1, 2008
Source:
USDA/Agricultural Research Service
Summary:
Elevated levels of carbon dioxide could promote the growth of purple and yellow nutsedge--quick-growing invasive weeds that plague farmers and gardeners in many states.

Higher carbon dioxide levels could promote the growth of purple and yellow nutsedge--quick-growing invasive weeds that plague farmers and gardeners in many states.
Credit: Photo courtesy of Jeff Stachler, Ohio State University, Bugwood.org

Elevated levels of carbon dioxide (CO2) could promote the growth of purple and yellow nutsedge—quick-growing invasive weeds that plague farmers and gardeners in many states.

That's the conclusion of plant physiologist Hugo Rogers and his colleagues at the Agricultural Research Service (ARS) National Soil Dynamics Laboratory (NSDL) in Auburn, Ala.

With ARS and Auburn University colleagues, Rogers grew purple nutsedge (Cyperus rotundus L.) and yellow nutsedge (C. esculentus L.) in chambers designed to mimic the atmospheric CO2 levels predicted to occur within the next century—about twice existing levels.

They found that both species benefited from elevated CO2, particularly purple nutsedge.

Although neither species is native to the United States, purple and yellow nutsedge can be found all over the country. Purple nutsedge can tolerate extremely high temperatures and is a major problem in the southern United States, whereas yellow nutsedge is better suited to more temperate climates.

Both species displace native plants and reduce yields in a variety of important agricultural crops, including corn, cotton and rice. Purple and yellow nutsedge spread via rhizomes and underground tubers, and are extremely difficult to control.

The Auburn scientists observed that both species grew larger in the elevated CO2 chambers than in control chambers. The plants had more tubers and greater water use efficiency, indicating that they could become increasingly competitive in an elevated-CO2 environment. This could result in reduced crop yields and displaced native flora.

This research, published recently in the Journal of Environmental Quality, is the first in a series of papers on the effects of CO2 on invasive weeds.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "Elevated Carbon Dioxide Boosts Invasive Nutsedge Plants." ScienceDaily. ScienceDaily, 1 July 2008. <www.sciencedaily.com/releases/2008/06/080629074053.htm>.
USDA/Agricultural Research Service. (2008, July 1). Elevated Carbon Dioxide Boosts Invasive Nutsedge Plants. ScienceDaily. Retrieved September 22, 2014 from www.sciencedaily.com/releases/2008/06/080629074053.htm
USDA/Agricultural Research Service. "Elevated Carbon Dioxide Boosts Invasive Nutsedge Plants." ScienceDaily. www.sciencedaily.com/releases/2008/06/080629074053.htm (accessed September 22, 2014).

Share This



More Earth & Climate News

Monday, September 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Hundreds of Thousands Hit NYC Streets to Protest Climate Change

Hundreds of Thousands Hit NYC Streets to Protest Climate Change

AFP (Sep. 22, 2014) Celebrities, political leaders and the masses rallied in New York and across the globe demanding urgent action on climate change, with organizers saying 600,000 people hit the streets. Duration: 01:19 Video provided by AFP
Powered by NewsLook.com
Rockefeller Oil Heirs Switching To Clean Energy

Rockefeller Oil Heirs Switching To Clean Energy

Newsy (Sep. 22, 2014) The Rockefellers — heirs to an oil fortune that made the family name a symbol of American wealth — are switching from fossil fuels to clean energy. Video provided by Newsy
Powered by NewsLook.com
Inside London's Massive Sewer Tunnel Project

Inside London's Massive Sewer Tunnel Project

AP (Sep. 22, 2014) Billions of dollars are being spent on a massive super sewer to take away London's vast output of waste, which is endangering the River Thames. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Washed-Up 'Alien Hairballs' Are Actually Algae

Washed-Up 'Alien Hairballs' Are Actually Algae

Newsy (Sep. 22, 2014) Green balls of algae washed up on Sydney, Australia's Dee Why Beach. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins