More research needed to make good on biofuel promise

Agriculture

Discussion

October 11, 2008

Douglas M. Main The Rushville Republican Sat Oct 11, 2008, 11:03 AM EDT

WEST LAFAYETTE — While cellulosic biofuels derived from grasses, crop residues and inedible plant parts have real potential to be more efficient and environmentally friendly than grain-based biofuels like corn ethanol, more research and science-based policies are needed to reap these benefits, says an international group of experts.

In an article published Oct. 3 in the journal Science, Purdue University agricultural economist Otto Doering and a team of 22 other scientists write that there is an urgent need for more comprehensive and collaborative research. This will help next-generation fuels avoid the pitfalls of grain-based biofuels, which include increased nutrient runoff and clearing of new land to recoup lost food production, Doering said.

"It's important that we begin thinking about how to deal with the unintended consequences of cellulosic biofuels as early as possible in order to ensure that they can be produced sustainably," Doering said.

The Renewable Fuel Standard within last year's energy bill guarantees cellulosic biofuels a relatively bright future, mandating that American companies purchase 21 billion gallons of cellulosic ethanol by 2022. But many questions remain unanswered, like how to comprehensively measure the impact of biofuels. To date, measures often reflect a single dimension rather than considering the system as a whole.

"There are a broad array of concerns," Doering said. "We need to consider biofuel's likely impact on water use and availability along with water quality, especially nutrient runoff. Greenhouse gas emissions must also be considered, as well as effects on soils and the landscape."

Rising demand for corn grain ethanol has gone hand-in-hand with increased water use and, oftentimes, increased nutrient runoff, Doering said. There also is mixed evidence that corn grain ethanol reduces greenhouse gas emissions. The intensive corn cultivation encouraged by high ethanol demand can degrade soil and water quality, he said.

Doering, recently appointed to the Environmental Protection Agency's Scientific Advisory Board, said more work is needed to develop and successfully apply "best management practices" to minimize nutrient, chemical and water use while limiting greenhouse gas emissions.

It's important to remember, Doering said, that existing best management practices can help soften the impact of increased corn production and intensified agriculture. Such practices include no-till farming methods, planting of cover crops, diversity-oriented crop rotation and inclusion of uncultivated fallow land into the landscape. All these practices help retain soil nutrients and offer benefits like wildlife habitat and natural pest suppression.

Cellulose, a complex carbohydrate present in all plant tissues, is more abundant in plants than starch. Humans also are unable to digest cellulose. This means cellulosic feedstocks are less likely to displace acreage devoted to food crops.

"The paper is really a plea to think carefully before jumping into cellulosics," Doering said. "We want to avoid making mistakes we're likely to later regret."

Michigan State University researcher G. Philip Robertson was lead author of the Science article. Authors hail from universities and institutions from two countries and 16 states.

Text Only

Agriculture

CHICK CHATTER WORKSHOP
4-H Poultry members, their parents, and anyone else who is a poultry
enthusiast, are invited to attend a Poultry Workshop on Wednesday, February
22nd, at 7 pm, at the Root Building on the Rush County Fairgrounds.

February 10, 2012
Planting pilot project available to Indiana producers
Julia A. Wickard, Executive Director of USDA's Farm Service Agency (FSA) in Indiana, announced that the Planting Transferability Pilot Project (PTPP) permits Indiana producers to plant approved vegetables for processing on base acres under the Direct and Counter-Cyclical Program (DCP) or Average Crop Revenue Election Program (ACRE).

February 10, 2012
Richland Farmers and Farmerettes
Richland Farmers and Farmerettes met at 7 p.m. Jan. 12 at the New Salem
Lions Club. Sue Herbert, Alan Amos and Carol Holzback are the
club's leaders.

February 7, 2012
United Producers Scholarship Program
United Producers Inc. (UPI) is excited to support the future generation of agriculture through its scholarship program. UPI is offering two $1000 scholarships in each of its 16 districts to deserving high school and college students pursuing agriculture degrees.

February 6, 2012
Center Lucky Sodbusters 4-H
The Center Lucky Sodbusters 4H Club met at 6 p.m. Jan. 17, 2011 at Center Christian Church.

February 6, 2012
Enrollment for 2012 DCP and ACRE programs began this week
January 27, 2012
N.A.I.L.E. news (2)
Caroline Kuhn won Grand Champion Market Lamb during the North East Youth Sheep Show held at the Big E in West Springfield, Mass.

January 27, 2012 1 Photo
N.A.I.L.E. news
Emilie and Caroline Kuhn recently exhibited at the North American International Livestock Exposition in Louisville, Ky.

January 27, 2012 1 Photo
Swine herd expansion modest, despite return to profitability
Hog producers have remained cautious about expanding their breeding herds despite the industry's return to profitability – a wise decision considering there is still much economic uncertainty for them, Purdue Extension agricultural economist Chris Hurt says.

January 23, 2012
Researchers: Honeybee deaths linked to seed insecticide exposure
Honeybee populations have been in serious decline for years, and Purdue University scientists may have identified one of the factors that cause bee deaths around agricultural fields.

January 12, 2012
More Agriculture Headlines

Agriculture

Search Results

Discussion

More research needed to make good on biofuel promise

Site Map

Contact Us