Navigation Links
Greenhouse gas calculator connects farming practices with carbon credits
Date:8/8/2010

MADISON, WI, August 9th, 2010 - Greenhouse gas markets, where invisible gases are traded, must seem like black boxes to most people. Farmers can make money on these markets, such as the Chicago Climate Exchange, by installing methane capture technologies in animal-based systems, no-till farming, establishing grasslands, and planting trees.

Farmers, students, extension educators, offset aggregators, and other stakeholders need to understand how to change farming practices to maximize their potential economic returns in these new markets.

To open the black box, researchers at the W.K. Kellogg Biological Station, including Claire P. McSwiney, Sven Bohm, Peter R. Grace, and G. Philip Robertson, developed the Farming Systems Greenhouse Gas Emissions Calculator, a simple web-based tool to help users make economically and environmentally sound decisions.

The first page of the calculator asks users to choose a county of interest from anywhere in the US. An input/output window allows them to choose which crops they will grow, yields, tillage practices, and nitrogen fertilizer rates. Default values based on localized USDA statistics are provided as a starting point.

Given the farming practices chosen, the calculator tells the user how much carbon was stored in the soil or lost to the atmosphere, nitrous oxide (a greenhouse gas 300 times more potent than carbon dioxide) lost from the soil in response to fertilizer application, carbon dioxide produced by tractors, and carbon dioxide produced in manufacturing the fertilizer.

In an article in the 2010 Journal of Natural Resources and Life Science Education, published by the American Society of Agronomy, the Crop Science Society of America, and the Soil Science Society of America, the authors used the calculator to demonstrate how tillage compares with no-till in a three-year rotation of corn, soybean, and wheat.

Whether tilled or untilled, corn years always had the largest greenhouse gas losses due to large fertilizer additions. Wheat requires less fertilizer and soybeans require none. No-till management reduced greenhouse gas emissions by 50% due to soil carbon storage.

In another comparison, the amount of fertilizer applied was changed from 134 to 101 kg. Such a reduction could be achieved without a yield penalty by more precisely applying fertilizers or by using new fertilizer recommendations. Excess nitrogen in soil is readily transformed to nitrous oxide. By simply reducing fertilizer applications, the cropping system reduced greenhouse gas emissions 12%.

In an Environmental Science class at Kalamazoo College, the authors used the calculator for an in-class exercise. Using the farming systems calculator allowed students to take control and make the management changes they had been discussing for weeks. By making the management decisions themselves and 'seeing' what happened to soil carbon, the connections between changes in farm practices and the potential for economic gain became much clearer.

Farmers and other agricultural professionals can use the program to participate in similar exercises. By comparing different cropping scenarios against one another, the practices with the most promise for mitigating atmospheric greenhouse gas concentrations become readily apparent. Those not familiar with agriculture learn how certain farming practices can have a positive environmental impact.


'/>"/>

Contact: Sara Uttech
608-268-4948
American Society of Agronomy
Source:Eurekalert  

Related biology news :

1. Carbon dioxide scrubber captures greenhouse gases
2. Greenhouse gas auction revenues can help cut Md. electric use significantly, says study
3. Potent greenhouse gas more prevalent in atmosphere than previously assumed
4. MIT analysis shows how cap-and-trade plans can cut greenhouse emissions
5. MIT: Safe storage of greenhouse-gas carbon dioxide
6. Oil spray reduces greenhouse gas emissions from pig finishing barns
7. Termite insecticide a potent greenhouse gas
8. Detecting disease in greenhouse plants
9. Termite killer lingers as a potent greenhouse gas
10. New greenhouse gas identified
11. Fish oils reduce greenhouse gas emissions from flatulent cows
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Greenhouse gas calculator connects farming practices with carbon credits
(Date:6/21/2016)... Columbia , June 21, 2016 ... to the new role of principal product architect ... named the director of customer development. Both will ... chief technical officer. The moves reflect NuData,s strategic ... in response to high customer demand and customer ...
(Date:6/16/2016)... 2016 The global ... reach USD 1.83 billion by 2024, according to ... Technological proliferation and increasing demand in commercial buildings, ... drive the market growth.      (Logo: ... development of advanced multimodal techniques for biometric authentication ...
(Date:6/9/2016)... , June 9, 2016  Perkotek an innovation leader in attendance control systems ... seamlessly log work hours, for employers to make sure the right employees are actually ... http://photos.prnewswire.com/prnh/20160609/377486LOGO ... ... ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... 2016 Epic Sciences unveiled a liquid ... to PARP inhibitors by targeting homologous recombination deficiency ... new test has already been incorporated into numerous ... types. Over 230 clinical trials are ... including PARP, ATM, ATR, DNA-PK and WEE-1. Drugs ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... its second eBook, “Clinical Trials Patient Recruitment and Retention Tips.” Partnering with experienced ... this eBook by providing practical tips, tools, and strategies for clinical researchers. , ...
(Date:6/23/2016)... , June 23, 2016 /PRNewswire/ - FACIT has ... Ontario biotechnology company, Propellon Therapeutics Inc. ... and commercialization of a portfolio of first-in-class WDR5 ... targets such as WDR5 represent an exciting class ... in precision medicine for cancer patients. Substantial advances ...
(Date:6/23/2016)... , ... June 23, 2016 , ... ... YM (Yeast and Mold) microbial test has received AOAC Research Institute approval 061601. ... microbial tests introduced last year,” stated Bob Salter, Vice President of Regulatory and ...
Breaking Biology Technology: