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:6/21/2016)... 21, 2016 NuData Security announced today that ... of principal product architect and that Jon ... customer development. Both will report directly to ... moves reflect NuData,s strategic growth in its product ... customer demand and customer focus values. ...
(Date:6/9/2016)... TURKU, Finland , June 9, 2016 ... French National Police deploy Teleste,s video security solution to ensure ... France during the major tournament ... and data communications systems and services, announced today that its ... Police Prefecture to back up public safety across ...
(Date:6/2/2016)... , June 2, 2016 ... Manned Platforms, Unmanned Systems, Physical Infrastructure, Support & Other ... provider visiongain offers comprehensive analysis of the ... this market will generate revenues of $17.98 billion in ... acquired DVTEL Inc, a leader in software and hardware ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... A person commits a crime, and the detective ... the criminal down. An outbreak of foodborne illness ... (FDA) uses DNA evidence to track down the bacteria that ... It,s not. The FDA has increasingly used a complex, cutting-edge ... illnesses. Put as simply as possible, whole genome sequencing is ...
(Date:6/23/2016)... 23, 2016   EpiBiome , a precision microbiome ... in debt financing from Silicon Valley Bank (SVB). The ... to advance its drug development efforts, as well as ... "SVB has been an incredible strategic partner to ... traditional bank would provide," said Dr. Aeron Tynes ...
(Date:6/23/2016)... BEACH, Calif. , June 23, 2016  Blueprint ... new biological discoveries to the medical community, has closed ... co-founder Matthew Nunez . "We have ... us with the capital we need to meet our ... will essentially provide us the runway to complete validation ...
(Date:6/23/2016)... ... June 23, 2016 , ... Velocity Products, ... tools designed, tuned and optimized exclusively for Okuma CNC machining centers at The ... of a collaboration among several companies with expertise in toolholding, cutting tools, machining ...
Breaking Biology Technology: