Log in
Login
Password
Remember
Lost password
Become a member for free
Sign up
Sign up
Settings
Settings
Dynamic quotes 

4-Traders Homepage  >  News

News

Latest NewsCompaniesMarketsEconomy & ForexCommoditiesHot NewsMost Read NewsRecomm.Business LeadersVideosCalendar 

ARS - Agricultural Research Service : Sunn Hemp Shows Promise as Biofuel Source

01/01/2013 | 09:14am US/Eastern

January 3, 2012

Work by scientists at the U.S. Department of Agriculture (USDA) suggests that farmers in the Southeast could use the tropical legume sunn hemp (Crotalaria juncea) in their crop rotations by harvesting the fast-growing annual for biofuel. The study, which was conducted by Agricultural Research Service (ARS) scientists in Florence, S.C., supports the USDA priority of finding new sources of bioenergy. ARS is USDA's chief intramural scientific research agency.

ARS agricultural engineer Keri Cantrell, agronomist Philip Bauer, and environmental engineer Kyoung Ro all work at the ARS Coastal Plains Soil, Water, and Plant Research Center in Florence. They compared the energy content of sunn hemp with cowpea (Vigna unguiculata), another common regional summer cover crop, in 2004 and 2006.

Both crops were grown in experimental plots near Florence and were harvested on the same day three times in each study year. The last harvest for both years was conducted right after the first killing freeze of the season. The scientists measured potential energy production of both feedstocks via direct combustion. This provided the feedstocks' higher heating value (HHV), which indicates how much energy is released via combustion.

In 2004, when there was ample rainfall, the resulting sunn hemp biomass yield totaled more than 4.5 tons per acre. This is equivalent to 82.4 gigajoules of energy per acre, close to the energy contained in 620 gallons of gasoline and well in the ballpark of other bioenergy crops, which have yields of anywhere from 30 to 150 gigajoules per acre.

The HHV for sunn hemp biomass exceeded the HHV for switchgrass, bermudagrass, reed canarygrass and alfalfa. Although reduced rainfall resulted in lower hemp biomass yields in 2006, sunn hemp's HHV for both study years was 4 to 5 percent greater than the HHV of cowpeas.

distributed by
React to this article
Latest news
Date Title
03:51a NIGC NATIONAL IRANIAN GAS : SPGC Condensate Output at 0.5mb/d
03:41a WALKABOUT RESOURCES : Extension of Shortfall Offer
03:38a MITSUBISHI MOTORS : World Debut of the All-new Pajero Sport Mid-size SUV in Thailand
03:37a FORD MOTOR : Herald-Times, Bloomington, Ind., Laura Lane column
03:31a GRUPPA KOMPANIY PIK : PIK GROUP 2Q 2015 Trading Update
03:31a KAROON GAS AUSTRALIA : June Quarterly Report
03:29a JUVENTUS FOOTBALL CLUB : Thistle chase bro of Juve star Pogba
03:28a Focus on driving down costs keeps IAG on track to meet profit target
03:28a CHIME COMMUNICATIONS : PR firm Chime agrees to Pounds 374m takeover
03:28a ASSOCIATED BRITISH FOODS : New role for Menzies director
Latest news
Advertisement
Hot News 
ANGLESEY MINING : Final Results and annual report
CAMBIUM GLOBAL TIMBERLAND : Appoints Tony Gardner As Chairman
EQUATORIAL PALM OIL : Non-Executive Buys Shares (DIRECTOR DEALINGS)
ENTEGRA FINANCIAL : posts 2Q profit
FAIR VALUE REIT : DGAP-WpÜG: Takeover Offer ;
Most Read News
07/31 PAK-CHINA RELATIONS : Army chief vows to protect CPEC
12:16a NIOC NATIONAL IRANIAN OIL : Energy Giants Yearn to Return to Iranian Upstream Energy Projects
07/31 Scott+Scott Files New Class Action Complaint in Foreign Exchange Lawsuit
07/31 U.S. Marine Corps Declares the F-35B Operational
07/31 Government of Canada Strengthens Maritime Trade and Tourism in Prince Rupert
Most recommended articles
02:55a Pacific trade talks unlikely to end in deal - source
02:52a BRITISH LAND : Serious Fraud Office launches investigation into British oil firm
01:13a JAPAN'S AMARI : TPP member nations clash over intellectual property issue
12:17aDJChina Manufacturing Activity Slips in July -- Update
07/31 E&Y Japan arm launches internal probe of Toshiba audit