Navigation Links
Holistic understanding: Ag chemicals in the environment
Date:6/3/2008

MADISON, WI, JUNE 2, 2008-- An understanding how environmental processes and agricultural practices interact to determine the transport and fate of agricultural chemicals in the environment is essential for effectively addressing the widespread degradation of surface and ground waters from past, present, and future agricultural activities. While considerable research has been conducted at field or smaller scales, the holistic understanding of processes at the watershed scale, encompassing multiple environmental compartments, is generally lacking.

To improve understanding in this critical area, scientists at the US Geological Survey (USGS) have conducted studies in five diverse agricultural settings across the country as part of the USGS National Water-Quality Assessment Program. The holistic study design, which was employed at each setting, focused on the catchments of small streams and included all of the important environmental compartments surface water, ground water, the unsaturated zone, the streambed, and the atmosphere. A detailed description of this whole-system study approach is published in the May-June issue of the Journal of Environmental Quality and serves as an introduction to a group of thirteen companion papers that compare and contrast the results for the specific environmental compartments from the five settings in included the study.

Results from the companion papers show the value of this holistic study design. Conclusions drawn from the interpretations of data in each of the environmental compartments are corroborated and enhanced by information from neighboring compartments.

Paul Capel, who lead the study, stated "Because of the holistic approach used, these investigations provide valuable information that can help optimize site-specific changes in agricultural practices to reduce the concentrations of nutrients, pesticides, and pesticide degradates in surface and ground waters and mitigate the impacts of agriculture on the environment."

At each of the five agricultural settings, a wide variety of field datahydrologic, mineralogical, chemical, dissolved gas, and isotopicwere collected during 2003 and 2004. In addition, several numerical models were employed to help interpret and simulate water and chemical transport and transformation processes within and between environmental compartments.

This work shows the value of a thorough understanding of the hydrologic system and water budget for an agricultural setting when seeking to understand water-quality issues. It also demonstrates that modifications, such as irrigation and engineered drainage, can profoundly alter the magnitudes and rates at which chemicals are transported through the environment. These rates, in turn, control the degree to which contaminants are diluted or chemically transformed prior to reaching receiving water bodies.

To further increase the understanding of how environmental processes and agricultural practices interact, the USGS is currently conducting studies in two additional agricultural settings using the same holistic approach.


'/>"/>

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

Related biology news :

1. Do chemicals in the environment affect fertility?
2. Detecting dangerous chemicals with lasers, exploring the brains circuitry with light and more
3. New regulations tighten controls on restricted chemicals
4. Chemicals used as fire retardants could be harmful, UC-Riverside researchers say
5. NAS report offers new tools to assess health risks from chemicals
6. Green tea boosts production of detox enzymes, rendering cancerous chemicals harmless
7. Yale Environment 360 magazine launches online
8. Environmental peace treaty between Israel and Palestinians unveiled at Ben-Gurion University
9. Some biofuels might do more harm than good to the environment, study finds
10. Observations from space: NASA environmental data and lung disease
11. New study links fate of personal care products to environmental pollution and human health concerns
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/24/2016)... patient care by providing unparalleled technology to leaders of the medical imaging industry.  As ... added to the range of products distributed by Ampronix. Photo - ... ... ... ...
(Date:5/16/2016)... 16, 2016   EyeLock LLC , a market ... opening of an IoT Center of Excellence in ... the development of embedded iris biometric applications. ... convenience and security with unmatched biometric accuracy, making it ... from DNA. EyeLock,s platform uses video technology to deliver ...
(Date:5/9/2016)... May 9, 2016 Elevay is ... to expanding freedom for high net worth professionals seeking ... today,s globally connected world, there is still no substitute ... ever duplicate sealing your deal with a firm handshake. ... by taking advantage of citizenship via investment programs like ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... , ... June 27, 2016 , ... Parallel 6 ... trials, announced today the Clinical Reach Virtual Patient Encounter CONSULT module which ... with the physician and clinical trial team. , Using the CONSULT module, patients and ...
(Date:6/27/2016)... --  Ginkgo Bioworks , a leading organism design ... awarded as one of the World Economic Forum,s ... innovative companies. Ginkgo Bioworks is engineering biology to ... in the nutrition, health and consumer goods sectors. ... including Fortune 500 companies to design microbes for ...
(Date:6/24/2016)... NC (PRWEB) , ... June 24, 2016 , ... Researchers ... the most commonly-identified miRNAs in people with peritoneal or pleural mesothelioma. Their findings are ... to read it now. , Diagnostic biomarkers are signposts in the blood, lung ...
(Date:6/23/2016)... 23, 2016 /PRNewswire/ - FACIT has announced the ... biotechnology company, Propellon Therapeutics Inc. ("Propellon" or ... of a portfolio of first-in-class WDR5 inhibitors for ... as WDR5 represent an exciting class of therapies, ... medicine for cancer patients. Substantial advances have been ...
Breaking Biology Technology: