Navigation Links
Nitrogen fertilizer remains in soils and leaks towards groundwater for decades, researchers find
Date:10/21/2013

Nitrogen fertilizer applied to crops lingers in the soil and leaks out as nitrate for decades towards groundwater "much longer than previously thought," scientists in France and at the University of Calgary say in a new study.

Thirty years after synthetic nitrogen (N) fertilizer had been applied to crops in 1982, about 15 per cent of the fertilizer N still remained in soil organic matter, the scientists found.

After three decades, approximately 10 per cent of the fertilizer N had seeped through the soil towards the groundwater and will continue to leak in low amounts for at least another 50 years.

The study was led by researcher Mathieu Sebilo at the Universit Pierre et Marie Currie in Paris, France, and by Bernhard Mayer in the U of C's Department of Geoscience, and included several research organizations in France.

Their paper, "Long-term fate of nitrate fertilizer in agricultural soils," was published this week in the Proceedings of the National Academy of Sciences of the United States of America.

The findings show that losses of fertilizer N towards the groundwater occur at low rates but over many decades, says Mayer, U of C professor of geochemistry and head of the Applied Geochemistry Group.

That means it could take longer than previously thought to reduce nitrate contamination in groundwater, including in aquifers that supply drinking water in North America and elsewhere, he says.

"There's a lot of fertilizer nitrogen that has accumulated in agricultural soils over the last few decades which will continue to leak as nitrate towards groundwater," Mayer says.

Canada and the U.S. regulate the amount of nitrate allowed in drinking water. In the 1980s, surveys by the U.S. Environmental Protection Agency and the U.S. Geological Survey showed that nitrate contamination had probably impacted more public and domestic water supply wells in the U.S. than any other contaminant.


'/>"/>
Contact: Marie-Helene Thibeault
m.thibeault@ucalgary.ca
403-679-8447
University of Calgary
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Microbes capture, store, and release nitrogen to feed reef-building coral
2. Nitrogen has key role in estimating CO2 emissions from land use change
3. Global nitrogen availability consistent for past 500 years, linked to carbon levels
4. Nitrogen from pollution, natural sources causes growth of toxic algae, study finds
5. Lower nitrogen losses with perennial biofuel crops
6. Researchers to study impacts of pollutant nitrogen on plant species diversity
7. How much nitrogen is fixed in the ocean?
8. Scientists develop new carbon accounting method to reduce farmers use of nitrogen fertilizer
9. Nitrogen pollution changing Rocky Mountain National Park vegetation, says CU-Boulder-led study
10. Modern hybrid corn makes better use of nitrogen, study shows
11. Vetch cover crop, fertilizer practices recommended for organic zucchini
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Nitrogen fertilizer remains in soils and leaks towards groundwater for decades, researchers find
(Date:8/29/2014)... A leading U.S. Ebola researcher from the University of Texas ... a blend of three monoclonal antibodies can completely protect monkeys ... days after infection, at a time when the disease is ... written an editorial for Nature discussing advances in ... Marburg virus are among the most deadly of pathogens, with ...
(Date:8/29/2014)... in German . ... is considered the oldest form of communication. Acting as ... example, the sexual attraction between males and females. Fish ... coordinate reproductive behavior in males and females. Scientists at ... Algarve in Faro, Portugal, and at the Max Planck ...
(Date:8/29/2014)... of the Tibetan plateau -- the largest topographic anomaly ... both its profound effect on climate and its reflection ... GSA Bulletin , Katharine Huntington and colleagues employ a ... modern and fossil snail shells to investigate the uplift ... , Views range widely on the timing of surface ...
Breaking Biology News(10 mins):Leading Ebola researcher at UTMB says there's an effective treatment for Ebola 2Ready for mating at the right time 2Ready for mating at the right time 3Snails tell of the rise and fall of the Tibetan Plateau 2Snails tell of the rise and fall of the Tibetan Plateau 3Snails tell of the rise and fall of the Tibetan Plateau 4Snails tell of the rise and fall of the Tibetan Plateau 5Snails tell of the rise and fall of the Tibetan Plateau 6Snails tell of the rise and fall of the Tibetan Plateau 7
... to life-threatening bleeding episodes is misdiagnosed in 15 per ... international research project led by a Queen,s professor. ... decision," says Maha Othman, a professor in the Department ... research project on the rare platelet type of von ...
... caching of whitebark pine seeds by the Clark,s nutcracker in ... regenerate populations of the imperiled conifer in most of its ... in the February issue of Science Findings , a ... Stationsuggests, for the first time, that the success of whitebark ...
... The Society for Neuroscience (SfN) has been ... create and maintain BrainFacts.org , a unique nonprofit ... and promise of brain research. With joint founding partners ... will launch the Web site in late spring 2012 ...
Cached Biology News:Conservation of whitebark pine may hinge on preservation of ponderosa 2Conservation of whitebark pine may hinge on preservation of ponderosa 3Society for Neuroscience awarded $1.53 million to create BrainFacts.org 2Society for Neuroscience awarded $1.53 million to create BrainFacts.org 3
(Date:8/31/2014)... 2014 Wockhardt Limited today announces a major ... research when two of its drugs, WCK 771 and ... (QIDP) status from U.S. Food & Drug Administration (FDA). ... pathogens which have a high degree of unmet need ... Disease Control (a top U.S. government health and safety ...
(Date:8/31/2014)... (PRWEB) August 31, 2014 This ... current state of the Epoxy Hardener industry ... basic overview of the industry, including definitions, applications ... Chinese domestic market analysis are provided with a ... of the market. A comparison between the international ...
(Date:8/29/2014)... are based on electrons, but one of the most ... i.e. circuits based on light (photons) instead of electrons. ... a stream of single photons and control their direction. ... attempts to achieve this control, but now scientists at ... steady stream of photons emitted one at a time ...
(Date:8/29/2014)... Pittsburgh, PA (PRWEB) August 29, 2014 ... Chairman, Hub MacDonald, and colleague Koichiro Matsuda, Horiba Scientific, ... JASIS on September 5, 2014. JASIS , Asia’s ... September 3-5, 2014, in Makuhari Messe, Japan. , ... New Tools for Bioanalysis from Single Molecules to Single ...
Breaking Biology Technology:U.S. FDA Grants QIDP Status for Wockhardt Anti-Infective Drug Discovery Program 2U.S. FDA Grants QIDP Status for Wockhardt Anti-Infective Drug Discovery Program 3Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 2Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 3Breakthrough in light sources for new quantum technology 2Fifth Annual U.S. Symposium at JASIS Organized by Pittcon’s Program Chairman Hub MacDonald 2
... Inc. (NYSE: TMO ) announced that it will ... at the Westin St. Francis,Hotel in San Francisco, Calif. ... 4:00 p.m. (PST)., Marijn E. Dekkers, president and ... overview of the company and discuss its,expectations for future ...
... Pafuramidine on Clinical Hold ... Schedule Zensana(TM) ... N.J., Dec. 28 Par,Pharmaceutical Companies, Inc. (NYSE: ... the,development status of its three, in-licensed, proprietary pipeline,products: ...
... from Faux Science, NORTH KINGSTOWN, R.I., Dec. ... Pain Society, Dominion Diagnostics sponsored an extensive,educational program ... Test, Which Patient and Discriminating Real Science from ... FCP, DAAPM. Dr.,Barkin is an Associate Professor, Faculty ...
Cached Biology Technology:Thermo Fisher Scientific to Present at the 26th Annual JPMorgan Healthcare Conference 2Strativa Pharmaceuticals, the Proprietary Products Division of Par Pharmaceutical, Provides an Update on Development Status of Pafuramidine and Other in-Licensed Products 2Strativa Pharmaceuticals, the Proprietary Products Division of Par Pharmaceutical, Provides an Update on Development Status of Pafuramidine and Other in-Licensed Products 3Strativa Pharmaceuticals, the Proprietary Products Division of Par Pharmaceutical, Provides an Update on Development Status of Pafuramidine and Other in-Licensed Products 4Strativa Pharmaceuticals, the Proprietary Products Division of Par Pharmaceutical, Provides an Update on Development Status of Pafuramidine and Other in-Licensed Products 5Arizona Pain Society and Dr. Robert Barkin, Rush University Medical Center, Present Program on Comprehensive Urine Drug Testing Sponsored by Dominion Diagnostics 2
Identify and characterize Phosphoinositide (PI(4,5)P2) binding...
... unit with motorized heated lid and skirted inner ... for microarrays and chips. The four screw-down points ... force of the motorized lid is set with ... results. This interchangeable Moto Alpha unit functions on ...
... factor 15 (KLF15) KLF15 is a ... abundantly expressed in the liver, kidneys, heart, ... Specificity: Polyclonal antibody produced in rabbits ... a region of human KLF15 with an ...
... Affi-Prep protein A media yield highly ... prior to analysis of other immunoglobulin ... antigen purification. Protein A binds to ... IgG from mammalian species. This ready-to-use, ...
Biology Products: