Navigation Links
Ultra-fine coatings on sediment grains influence nitrate and sulfate storage in soil
Date:2/23/2009

Madison, WI, February 24, 2009 | Tiny sediment grains are covered with a very fine-grained, complex mixture of minerals in an open fabric that results in a large surface area in contact with water between the grains. Scientists at the U.S. Geological Survey (USGS) are studying this microscopic layer and finding that the mineral composition of these coatings on sediment grains in the unsaturated zone (i.e., between land surface and the water table) can have a substantial effect on the retention of nitrate and sulfate. Their findings are particularly important for evaluating the long-term effects of agriculture on water quality, as the storage of these common components of fertilizer in the unsaturated zone can affect the quality of shallow groundwater for many years after fertilizer application ceases.

Nitrate and sulfate are important plant nutrients. Farmers and soil scientists routinely monitor the nutrient content of the soil in farm fields so that fertilizer application can be managed to maintain profitability and to minimize runoff or infiltration. Loss of excess nutrients can elevate levels in streams and shallow groundwater. Understanding the mechanisms of nutrient storage in the unsaturated zone is critical to protecting groundwater resources.

Timothy Reilly, the lead author of the study, stated "The unsaturated zone is potentially a large reservoir for anions (negatively charged ions) like nitrate and sulfate. The increased residence time indicated by these findings suggests that models in areas with similar mineral characteristics, which neglect or minimize storage, will not accurately predict nutrient transport to the water table."

In the study, unsaturated-zone sediments and the chemistry of shallow groundwater underlying a small (about 3 square miles) watershed in southern New Jersey were studied to identify mechanisms responsible for nutrient storage. Lower unsaturated zone sediments and shallow groundwater samples were
'/>"/>

Contact: Sara Uttech
suttech@soils.org
608-268-4948
Soil Science Society of America
Source:Eurekalert

Page: 1 2

Related biology news :

1. New polymer coatings prevent corrosion, even when scratched
2. Sedimentary records link Himalayan erosion rates and monsoon intensity through time
3. Paleozoic sediment curve provides new tool for tracking sea-floor sediment movements
4. Cataloguing invisible life: Microbe genome emerges from lake sediment
5. UNH researchers test sediment-scrubbing technology in NH river
6. Smithsonian study: Sediment prediction tools off the mark
7. Hot springs microbes hold key to dating sedimentary rocks, researchers say
8. To improve forecasting earthquakes, NJIT mathematician studies grains
9. Students eat more whole grains when its gradually added to school lunch
10. Fungus genome yielding answers to protect grains, people and animals
11. 2 genes influence social behavior, visual-spatial performance in people with Williams syndrome
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/24/2015)... 2015 This report analyzes the worldwide markets for Face ... Biometrics, and Voice Biometrics. The report provides separate comprehensive analytics for ... , Europe , Asia-Pacific , ... , and Latin America . Annual estimates and ... seven-year historic analysis is provided for these markets. Market data and ...
(Date:2/19/2015)... Feb .19, 2015 Research and Markets ... of the "Military Electro-Optical / Infrared Systems ... by Platform - Forecast to 2020" report ... electro-optical/infrared systems market is expected to reach $16.35 ... 7.71%. This report segments the military ...
(Date:2/12/2015)... , Feb. 12, 2015   MedNet Solutions ... in clinical study management systems, has recently bolstered ... further distinguishing iMedNet as ... Organizations (CROs) and healthcare consultants.  Building on the ... customer referrals and numerous co-marketing opportunities), MedNet,s new ...
Breaking Biology News(10 mins):World Face and Voice Biometrics Industry 2World Face and Voice Biometrics Industry 3World Face and Voice Biometrics Industry 4World Face and Voice Biometrics Industry 5World Face and Voice Biometrics Industry 6World Face and Voice Biometrics Industry 7World Face and Voice Biometrics Industry 8World Face and Voice Biometrics Industry 9World Face and Voice Biometrics Industry 10World Face and Voice Biometrics Industry 11World Face and Voice Biometrics Industry 12World Face and Voice Biometrics Industry 13World Face and Voice Biometrics Industry 14World Face and Voice Biometrics Industry 15World Face and Voice Biometrics Industry 16Military Electro-Optical / Infrared Systems (Image Intensification, Laser, Infrared) Market - Forecast to 2020: Featuring Profiles of the Market Leaders on this $16 Billion market 2Military Electro-Optical / Infrared Systems (Image Intensification, Laser, Infrared) Market - Forecast to 2020: Featuring Profiles of the Market Leaders on this $16 Billion market 3MedNet Solutions Announces Key Enhancements To Its iMedNet Partner Program 2
... is uniquely a "dual" sense, in that the brain perceives ... nose rather than the mouth. In the August 18, 2005, ... of chocolate activated different brain regions according to whether the ... or through the nose. , In a joint research effort ...
... cancer melanoma, studying functional tissue rather than cell ... development, according to new research from a Howard ... School of Medicine. , Though multiple genetic alterations ... been able to establish a direct causal link ...
... a small molecule of RNA called microRNA ?a chemical cousin ... protein involved in the early development of heart muscle. , ... Nature, may aid scientists in their understanding of how a ... cell, as well as offer researchers a way to predict ...
Cached Biology News:Nose odors and mouth odors: The brain distinguishes 2Nose odors and mouth odors: The brain distinguishes 3Ibruprofen and other commonly used painkillers for treating inflammation may increase the risk of heart attack 2Ibruprofen and other commonly used painkillers for treating inflammation may increase the risk of heart attack 3MicroRNA tweaks protein that controls early heart development 2MicroRNA tweaks protein that controls early heart development 3
(Date:3/4/2015)... CALIFORNIA (PRWEB) March 04, 2015 ... firm in the life sciences industry, hired David ... leads the Cloud Compliance Services and Solutions at ... utilize cloud based applications while maintaining compliance with government ... Blewitt has been an accomplished life sciences regulatory and ...
(Date:3/4/2015)... Proove Biosciences , a commercial ... to announce the launch of their CME-accredited course ... of Pain”. , The continuing medical education program ... year. The focus of the program is to ... treatments, integrate appropriate pain management techniques, and incorporate ...
(Date:3/4/2015)... , March 4, 2015 ... Paris in December 2011, ,SARAH, ... yttrium-90 resin microspheres versus sorafenib in advanced hepatocellular carcinoma ... late 2016.   SARAH, a large French ... (hepatocellular carcinoma, or HCC) has completed patient enrolment, exceeding ...
(Date:3/3/2015)... , March 3, 2015 NASA astronaut ... launch this month to spend a year living and working ... satellite interviews from 5:30 to 7 a.m. EDT Monday, March ... as he completes the final weeks of his ... a video on NASA Television highlighting his mission training and ...
Breaking Biology Technology:USDM Life Sciences Names David Blewitt VP of Cloud Compliance for Regulated Life Sciences 2USDM Life Sciences Names David Blewitt VP of Cloud Compliance for Regulated Life Sciences 3Proove Biosciences Launches CME Accredited Program with Medscape 2Proove Biosciences Launches CME Accredited Program with Medscape 3Treatment of Primary Liver Cancer: SARAH Study Completes Enrolment, Results Expected Late 2016 2Treatment of Primary Liver Cancer: SARAH Study Completes Enrolment, Results Expected Late 2016 3Treatment of Primary Liver Cancer: SARAH Study Completes Enrolment, Results Expected Late 2016 4Treatment of Primary Liver Cancer: SARAH Study Completes Enrolment, Results Expected Late 2016 5NASA Astronaut Scott Kelly Available for Interviews before One-Year Space Station Mission 2
... Sosei Group Corporation,("Sosei"; TSE Mothers Index: 4565), ... its wholly owned Japanese subsidiary, has,entered into a ... ("ASKA", TSE First Section Index: 4514) for the ... NorLevo(R) is an oral emergency contraceptive "morning after ...
... as bioethanol is to make a major contribution to our ... some tiny insect helpers, says Michael Scharf, an assistant professor ... In a review to be published in Biofuels, Bioproducts ... how the enzymes produced by both termites and the micro-organisms ...
... SAN DIEGO, Oct. 21 Cadence Pharmaceuticals,Inc. (Nasdaq: ... in-licensing,developing and commercializing proprietary product candidates principally,for use ... company,s,President and CEO Theodore Schroeder will present the ... 9:30am Pacific Time (12:30pm,Eastern Time) during the BIOCOM ...
Cached Biology Technology:Sosei Agrees Terms With ASKA for Commercialisation of SOH-075 (NorLevo(R)) 2Digesting the termite digestome -- a way to make biofuels? 2Cadence Pharmaceuticals' CEO Theodore Schroeder to Present at the BIOCOM Investor Conference 2
... Zero Blunt TOPO PCR ... fastest and easiest method ... or equal to95%) cloning ... amplified with proofreading thermostable ...
Zebrafish Vitellogenin ELISA System, 96 wells. ELISARange: 0.5-100 ng/ml.Sensitivity: 0.3 ng/ml.Sample volume: 100 ul.Suitable for use with Zebrafish plasma samples.3-h protocol.Store at 2-8 C. Categ...
... Kits provide rapid and efficient removal of ... and salts from PCR products (Figure 1). ... two Binding Buffer options for fragments >100 ... performed in either single column or 96-well ...
The product contains 10 ml Dynabeads Epoxy (4.5 m). Supplied at 4 x 10 8 beads/ml...
Biology Products: