Navigation Links
Large amounts of nitrogen stored beneath selected agricultural areas
Date:5/2/2010

MADISON, WI, May 3rd, 2010-Large amounts of nitrogen are stored in the soils of agricultural areas in Nebraska and Maryland, according to a new study by the U.S. Geological Survey (USGS) and the U.S. Department of Agriculture (USDA). Once in the soil, nitrogen can be converted to nitrate, which can readily move to groundwater.

"We expected to find nitrogen stored in organic matter in these soils, but didn't realize how much," said Tom Nolan, USGS hydrologist, who led the study. "If mobilized, the large reservoirs of nitrogen could significantly impact water quality."

Nitrogen occurs in soil, plants, and groundwater, and it is difficult to account for all of the various forms it can take. For this study, scientists at the USGS National Water Quality Assessment Program and the USDA Agricultural Research Service used a new version of the Root Zone Water Quality Model to estimate unsaturated zone nitrogen mass balances at four agricultural fields. The study was reported in the May/June 2010 edition of the Journal of Environmental Quality, published by the American Society of Agronomy, the Crop Science Society of America, and the Soil Science Society of America.

The mass balances were expected to reveal the predominant forms of nitrogen in important agricultural settings. The four sites had variable climate, soils, and management practices, and included: an almond orchard in central California; a cornfield that is about 0.6 kilometers from the almond orchard; a cornsoybean crop rotation in eastern Nebraska; and a cornsoybean rotation in eastern Maryland.

The model predicted that large amounts of organic nitrogen are stored in the soil beneath fields in Nebraska and Maryland on which corn and soybean crops are grown. The model also showed that nitrogen came primarily from inorganic fertilizer or from nitrogen fixation by soybeans, and that most nitrogen was removed from the soil through uptake by crops. After crop uptake,
'/>"/>

Contact: Sara Uttech
suttech@sciencesociety.org
608-268-4948
American Society of Agronomy
Source:Eurekalert

Page: 1 2

Related biology news :

1. When the dinner bell rings for seafloor scavengers, larger animals get first dibs
2. Nations largest organization of ecologists offers expert database
3. The largest Last Supper
4. Experts gather to solve mystery of largest recorded die-off of great whales
5. Large mammals need protected areas, forest cover in India
6. WCC Webinar on De-Duplication in Large-Scale Identity Systems
7. New study suggests minke whales are not preventing recovery of larger whales
8. Sweet corn study provides large-scale picture of better fields
9. Small changes in protein chemistry play large role in Huntingtons disease
10. Largest gene study of childhood IBD identifies 5 new genes
11. Largest-ever database for liver proteins may lead to treatments for hepatitis
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/29/2014)... a ceremony held in New York City on September ... the American Cancer Society Professor of Genome Sciences and ... 2008 Honorary Doctor of Philosophy of Tel Aviv University, ... Medical Science. , In addition to her honorary degree ... at the TAU School of Medicine, and for the ...
(Date:10/29/2014)... those referred to as ,facultative, form part—together with other ... differentiates these cells from the others. However, they have ... to become stem cells again. This phenomenon is something ... cells that stimulate tissue growth, thus allowing the regeneration ... Knowledge of the underlying mechanism that allows these ...
(Date:10/29/2014)... in the living world compete with members of ... how much they invest into their competitive ability. ... get access to high-quality resources, while others seem ... the lower-quality resources that are left over for ... and human societies seems to fluctuate considerably over ...
Breaking Biology News(10 mins):Geneticist and humanitarian: Prof. Mary-Claire King receives Lasker Award 2A mechanism that allows a differentiated cell to reactivate as a stem cell revealed 2Evolution of competitiveness 2Evolution of competitiveness 3
... other groups have created a map of the world,s ... temperatures, ultra-violet radiation, weather systems, sedimentation, as well as ... The study, say the authors, will help to ... by identifying reef systems where biodiversity is high and ...
... Viruses fill the ocean and have a significant effect ... professor of biology at UC Santa Barbara and his ... of Ecology, Evolution, and Marine Biology, is the senior ... week by the International Society for Microbial Ecology ...
... published online this week in Nature Genetics , ... with universities in China and Denmark reports the first ... type of bladder cancer. Recognizing the genetic ... healthy neighbors may allow early genetic screenings for cancer ...
Cached Biology News:Worldwide map identifies important coral reefs exposed to stress 2Worldwide map identifies important coral reefs exposed to stress 3Decade-long study reveals recurring patterns of viruses in the open ocean 2Decade-long study reveals recurring patterns of viruses in the open ocean 3University of Colorado Cancer Center genetically sequences most common bladder cancer 2
(Date:10/30/2014)... NY (PRWEB) October 30, 2014 Whitehouse ... for its ICH Stability Testing and Package Test Capacity. ... investment centers on a dramatic increase in environmental chamber ... of stability, storage and aging samples to be securely ... of this major capital expenditure has already taken place ...
(Date:10/30/2014)... N.J. , Oct. 30, 2014  Regado Biosciences, ... it will hold a conference call and live audio ... EST to discuss its third quarter 2014 financial results. ... conference call by dialing (888) 347-1165 for domestic callers ... will be webcast live under the investor relations section ...
(Date:10/27/2014)... MILAN , October 27, 2014 ... the right to produce, exhibit and sell its ... sought to impeach their patent.      ... After four years of fighting, the definitive judgement ... designs and produces innovative and accessible hi-tech prostheses ...
(Date:10/27/2014)... Called the NOAH Protocol, this ... types of pediatric brain cancer. The implications for ... 30 years of research and development. Amber Larkin, ... one mom's determination can make a difference. ... and it’s only fitting that we’ve received FDA ...
Breaking Biology Technology:Whitehouse Labs Announces Major Capital Investment in Stability and Storage Testing Capacity 2Whitehouse Labs Announces Major Capital Investment in Stability and Storage Testing Capacity 3Regado Biosciences to Provide Third Quarter 2014 Financial Results 2Italian Lower Limb Prosthesis Company Wins Lawsuit Against German Giant Ottobock 2FDA Approves Breakthrough in Pediatric Brain Cancer - First in 30 Years 2FDA Approves Breakthrough in Pediatric Brain Cancer - First in 30 Years 3
... Tengion, Inc. (Nasdaq: TNGN ), a leader in ... and live audio webcast on Friday, March 25, 2011 at ... its fourth quarter 2010 financial results.   To ... (international) and reference access code 55045101. This ...
... N.J., March 18, 2011 Today, the Access Group--a ... structure; the formation of 2 business entities, Promidian and ... senior executive team leaders. The Access ... health care and life sciences industries to provide full-service ...
... 17, 2011 Quest Diagnostics Incorporated (NYSE: ... announced that its ColoVantage test has been approved by ... of patients in the state. It is believed to ... a venal blood specimen to be approved by the ...
Cached Biology Technology:Tengion To Host Conference Call To Provide a Business Update and Report Fourth Quarter 2010 Financial Results on March 25, 2011 2Introducing the Access Group and Its New Business Entities 2Introducing the Access Group and Its New Business Entities 3Introducing the Access Group and Its New Business Entities 4Introducing the Access Group and Its New Business Entities 5Introducing the Access Group and Its New Business Entities 6New York State Approves the Quest Diagnostics ColoVantage™ Colorectal Cancer Blood Test 2New York State Approves the Quest Diagnostics ColoVantage™ Colorectal Cancer Blood Test 3
... The DNA Engine Dyad instrument is the ... Featuring MJ's world-class thermal performance, the ... display, as well as point-and-click navigation via ... Dyad can be easily and economically expanded ...
... Tetrad 2 thermal cycler is a completely ... Tetrad chassis, and it accepts the full ... delivers the same precision in thermal performance ... Tetrad thermal cyclers, allowing easy transport of ...
ID clarifier: platform...
... Tetrad 2 thermal cycler accommodates a ... heat-pump assemblies), which hold different types ... computer drives an advanced graphical interface ... lid temperatures. Peltier heat pumps, built ...
Biology Products: