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The Field Narrows For Cover Crops In Biofuel Production

Date:
October 19, 2009
Source:
USDA/Agricultural Research Service
Summary:
Scientists are looking for cover crop perennials that provide the best balance in biofuel production between agronomic success and environmental sustainability.

ARS agronomist Jeremy Singer has identified Kentucky bluegrass and white clover as two promising perennial cover crops to be grown with corn for biofuel production that may provide a good balance between agronomic success and environmental sustainability.
Credit: Photo courtesy of Jeremy Singer, ARS

An Agricultural Research Service (ARS) scientist is looking for cover crop perennials that provide the best balance in biofuel production between agronomic success and environmental sustainability. This work is being supported by the Sun Grant Initiative, a national network of land-grant universities and federally funded laboratories working together to study, produce, and commercialize renewable, biobased energy technologies.

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ARS agronomist Jeremy Singer, who works at the National Soil Tilth Laboratory in Ames, Iowa, is conducting this research as part of a three-component study of optimizing corn cultivation for biofuel production. He’s evaluating perennial grass crops to assess their potential for mitigating soil erosion and enhancing soil organic matter even in fields where every bit of corn and stover—stalk, leaves and all—is harvested either for grain or cellulosic ethanol production.

Perennial groundcovers’ root systems may contribute enough carbon to the soil to offset the loss of carbon when stover is removed. Cover crops also provide habitat for beneficial insects, facilitate water infiltration, help hold nitrogen in the soil, suppress weeds and reduce the runoff of agricultural chemicals.

Results from Singer’s first season in the field indicated that white clover or Kentucky bluegrass were promising cover crop candidates worthy of additional study. On the other hand, creeping red fescue added notable amounts of carbon to the soil, but was very competitive with corn.

When the optimum groundcover has been identified, using no-till and strip-till cultivation practices in the corn-groundcover system will reduce the amount of fossil fuel needed to prepare and plant the crops. This reduced tillage, in turn, will decrease greenhouse gas emissions and require fewer energy inputs than using conventional tillage—another prospective plus for farmers and fields alike.


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. "The Field Narrows For Cover Crops In Biofuel Production." ScienceDaily. ScienceDaily, 19 October 2009. <www.sciencedaily.com/releases/2009/10/091002101613.htm>.
USDA/Agricultural Research Service. (2009, October 19). The Field Narrows For Cover Crops In Biofuel Production. ScienceDaily. Retrieved January 31, 2015 from www.sciencedaily.com/releases/2009/10/091002101613.htm
USDA/Agricultural Research Service. "The Field Narrows For Cover Crops In Biofuel Production." ScienceDaily. www.sciencedaily.com/releases/2009/10/091002101613.htm (accessed January 31, 2015).

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