Featured Research

from universities, journals, and other organizations

Biofuel Crops Double As Greenhouse-Gas Reducers

Date:
June 29, 2007
Source:
USDA/Agricultural Research Service
Summary:
Corn and soybeans may be the current "go-to" crops for producing ethanol and biodiesel, respectively. But two other crops--switchgrass and hybrid poplar--could steal the show in the future when it comes to curbing greenhouse gases, according to Agricultural Research Service (ARS) and collaborating scientists.

As a biofuel crop, switchgrass may outperform corn and soybeans in curbing emissions of carbon dioxide, a greenhouse gas that contributes to global climate change. Above, an ARS geneticist harvests switchgrass seed as part of an agency breeding program to develop new cultivars specifically for bioenergy production.
Credit: Photo by Wolfgang Hoffmann

Corn and soybeans may be the current "go-to" crops for producing ethanol and biodiesel, respectively. But two other crops—switchgrass and hybrid poplar—could steal the show in the future when it comes to curbing greenhouse gases, according to Agricultural Research Service (ARS) and collaborating scientists.

Related Articles


In a study published in the April issue of Ecological Applications, ARS scientist Paul Adler and colleagues compared the net production of carbon dioxide and two other greenhouse gases associated with producing biofuels from several different bioenergy crops.

In short, it takes energy to produce energy, notes Adler, who's in the ARS Pasture Systems and Watershed Management Research Unit, University Park, Pa. For example, operating a tractor to plow, plant, fertilize and harvest all require gasoline or diesel fuel. This, in turn, releases carbon dioxide and other greenhouse gases tied to global climate change.

The good news? Bioenergy crops offset their greenhouse-gas contributions in three key ways: by removing carbon dioxide from the air and storing it in crop roots and soil as organic carbon; by producing coproducts like protein for animal feed, which saves on energy to make feed by other means; and by displacement, whereby replacing a fossil fuel with a biobased one "recycles" rather than adds more carbon dioxide to the atmosphere.

Together with ARS scientist Stephen Del Grosso of Fort Collins, Colo., and William Parton of Colorado State University, Adler predicted a 40 percent reduction of greenhouse gas emissions if ethanol and biodiesel from corn-soybean rotations were used instead of gasoline and diesel. This reduction was about two times greater than using ethanol produced from corn grain alone. However, the team predicted that using switchgrass and hybrid poplar would produce nearly a three-fold greater reduction in greenhouse gas emissions compared to corn-soybean rotations.

This research shows that biofuels do indeed have potential to remove greenhouse gases from the atmosphere while helping reduce U.S. reliance on foreign oil, according to Adler.

ARS is the U.S. Department of Agriculture's chief scientific research agency.


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. "Biofuel Crops Double As Greenhouse-Gas Reducers." ScienceDaily. ScienceDaily, 29 June 2007. <www.sciencedaily.com/releases/2007/06/070628063747.htm>.
USDA/Agricultural Research Service. (2007, June 29). Biofuel Crops Double As Greenhouse-Gas Reducers. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2007/06/070628063747.htm
USDA/Agricultural Research Service. "Biofuel Crops Double As Greenhouse-Gas Reducers." ScienceDaily. www.sciencedaily.com/releases/2007/06/070628063747.htm (accessed December 21, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Sunday, December 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Lava Inches Closer to Highway

Raw: Lava Inches Closer to Highway

AP (Dec. 21, 2014) Officials have opened a new road on Hawaii's Big Island for drivers to take care of their daily needs if encroaching lava from Kilauea Volcano crosses a highway and cuts them off from the rest of the island. (Dec. 20) Video provided by AP
Powered by NewsLook.com
Raw: Scuba Diving Santa Off Florida Keys

Raw: Scuba Diving Santa Off Florida Keys

AP (Dec. 20, 2014) A scuba diving Santa Claus explored the waters of the Florida Keys National Marine Sanctuary. Dive shop owner Spencer Slate makes the dive each year to help raise money for charity. (Dec. 20) Video provided by AP
Powered by NewsLook.com
Obama: Better Ways to Create Jobs Than Keystone Pipeline

Obama: Better Ways to Create Jobs Than Keystone Pipeline

AFP (Dec. 19, 2014) US President Barack Obama says that construction of the Keystone pipeline would have 'very little impact' on US gas prices and believes there are 'more direct ways' to create construction jobs. Duration: 00:47 Video provided by AFP
Powered by NewsLook.com
Raw: Lava on Track to Hit Hawaii Market

Raw: Lava on Track to Hit Hawaii Market

AP (Dec. 19, 2014) Lava from an active volcano on Hawaii's Big Island slowed slightly but stayed on track to hit a shopping center in the small town of Pahoa. (Dec. 19) Video provided by AP
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:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

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