Navigation Links
MU scientists find new farming method to reduce greenhouse gases, increase farm yields
Date:1/13/2011

COLUMBIA, Mo. U.S. agricultural practices create 58 percent of nitrous oxide in the world, which is the third most prevalent greenhouse gas in the atmosphere. Scientists believe nitrous oxide contributes to global warming about 300 times more than carbon dioxide. New practices and products have been introduced to address this issue, but farmers do not have the time or profit margins to experiment with ideas that may ultimately hurt the "bottom line." Now, researchers at the University of Missouri have found methods to help farmers reduce those emissions while also increasing corn grain production.

At the University of Missouri Greenley Research Center in northeast Missouri, Kelly Nelson, a research agronomist and associate professor in the MU Division of Plant Sciences, monitored fields of poorly drained claypan soil that were planted with corn after soybean. One field was "strip tilled" with nitrogen fertilizer placed in a band in the soil, while another field was left untilled with a surface application of nitrogen fertilizer. The research team found that strip tillage and banded fertilizer significantly reduced the amount of greenhouse gases emitted per bushel of corn grain production, when compared to that of surface applied no-till treatments.

Strip tillage is the practice of tilling a field in strips up to a foot wide and eight to nine inches deep, rather than tilling the entire field, so that crop residues can be left on the surface of most of the field. By planting corn into those strips, and adding fertilizer during the process, farmers can use less energy, reduce soil erosion and conserve soil moisture in a large area of the field. Additionally, the nitrogen stays deep in the soil, where it less susceptible to environmental loss.

"This tells us that more efficient fertilizer use is needed to maintain productivity and profitability," said Nelson. "We saw grain yields increase, and this is important when it comes to nitrous oxide emissions and the amount of food produced."

Peter Motavalli, associate professor in the MU Department of Soil, Environmental and Atmospheric Sciences, directed the research focused on measurements of soil nitrous oxide emissions and says the results are another piece of information that can help farmers select management options that may increase agricultural production and economic returns while also reducing environmental impacts with use of nitrogen fertilizer. The research was conducted during above average rainfall growing seasons from 2008 to 2010 in poorly-drained soils so the results of between 2.4 to 3.8 percent cumulative loss of the applied fertilizer N as nitrous oxide N are probably relatively high for conditions in Missouri.

"The main goal for our team has been to identify agricultural practices that maintain or increase production while reducing the environmental impact," Motavalli said. "There hasn't been much data on greenhouse gas emissions for Missouri, and we hope to provide information on how much nitrogen is being lost as nitrous oxide with different agricultural practices so growers can make informed choices depending on their farm operation and environmental conditions."

Nelson, Motavalli, and Pat Nash, an MU graduate student, presented the results of their three-year study, "Use of Strip Tillage to Increase Corn Production and Reduce Soil Nitrous Oxide Emissions," at the national meetings of the American Society of Agronomy in November and at the Missouri Crop Management Conference in December.


'/>"/>

Contact: Steven Adams
AdamsST@missouri.edu
573-882-8353
University of Missouri-Columbia
Source:Eurekalert

Related biology news :

1. 7 CAMH scientists win Young Investigator awards focused on breakthrough research
2. Inside a snowstorm: Scientists obtain close-up look at Old Man Winter
3. 6 PNNL scientists elected 2010 AAAS Fellows
4. Shellfish safer to eat thanks to breakthrough by Queens scientists
5. UCSB, Texas A&M scientists find methane gas concentrations have returned to near-normal levels
6. Princeton scientists construct synthetic proteins that sustain life
7. Oil spill symposium to convene scientists, media, policymakers and community leaders
8. Canadian marine biodiversity scientists forging strategy for sustainable ocean use
9. Scientists discover that a specific enzyme inhibitor may help control lung inflammation
10. UNC scientists pinpoint link between light signal and circadian rhythms
11. Scripps Research scientists identify key interaction in hepatitis C virus
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/26/2017)...  Crossmatch, a leading provider of security and identity ... combatting fraud, waste and abuse in assistance operations around ... on Disaster Relief conference in Panama City ... and foreign assistance organizations throughout Latin America ... a largely unacknowledged problem in the foreign assistance and ...
(Date:1/24/2017)... , Jan. 24, 2017 Biopharm ... of the laboratory use of nuclear magnetic resonance ... experienced end-users and profiled current practices, developments, trends ... as well as growth and opportunities. These areas ... suppliers, NMR instruments, needs and innovation requirements, hyphenated ...
(Date:1/21/2017)... 20, 2017 Research and Markets has announced ... report to their offering. ... The global voice recognition biometrics market to grow ... The report covers the present scenario and the growth prospects ... the market size, the report considers the revenue generated from the ...
Breaking Biology News(10 mins):
(Date:2/20/2017)... ... February 20, 2017 , ... USARAD ... company announces at HIMSS 2017 Annual Conference (Orlando, FL) a world-wide distribution ... a global cloud-based sharing and collaboration platform as part of the Siemens ...
(Date:2/20/2017)... ORLANDO, Fla. , Feb. 20, 2017 /PRNewswire/ ... (HIMSS) conference in Orlando , ... new offerings, collaborators and clients. IBM Chairman, President ... the HIMSS17 opening keynote address today from 8:30-10 ... www.ibm.com/watson/health , and ibm.com/industries/healthcare. Her remarks examine ...
(Date:2/18/2017)... (PRWEB) , ... February 17, 2017 , ... ... and Marrow Transplantation (ASBMT) and the Center for International Blood & Marrow Transplant ... Center in Orlando, Fla. , The combined scientific sessions offer investigators, ...
(Date:2/17/2017)... Feb. 17, 2017  BioGenex, a global leader ... of a novel system for quantitative immunohistochemistry (IHC). ... University of Rochester (NY, USA) and Konica-Minolta Inc. ... system is able to accurately quantify the expression ... epidermal growth factor receptor-2) in clinical samples. Quantitative ...
Breaking Biology Technology: