Natural Resources Conservation Service

An extensive pesticide properties database was compiled, which includes six physical properties, ie, solubiUty, half-life, soil sorption, vapor pressure, acid pR and base pR for about 240 compounds (4). Because not all of the properties have been measured for all pesticides, some values had to be estimated. By early 1995, the Agricultural Research Service (ARS) had developed a computerized pesticide property database containing 17 physical properties for 330 pesticide compounds. The primary user of these data has been the USDA s Natural Resources Conservation Service (formerly the Soil Conservation Service) for leaching models to advise farmers on any combination of soil and pesticide properties that could potentially lead to substantial groundwater contamination. 

Soil Survey Staff (1998). "Keys to Soil Taxonomy." 8th edn. USDA Natural Resource Conservation Service. 

Plate 3. Global soil regions. (Courtesy of US Department of Agriculture, Natural Resources Conservation Service, Soil Survey Division, World Soil Resources.)... 

In order to determine chemical elements in soil, samples of the soil must undergo a solid-liquid extraction. Sometimes the extracts resulting from this procedure have analyte concentrations that are too high to be measured accurately by the chosen method. Therefore, they must be diluted. At the Natural Resources Conservation Service (NRCS) Soil Survey Laboratory in Lincoln, Nebraska, an automated diluting device is used. Using this device, the analyst accurately transfers aliquots of the extract and a certain volume of extraction solution to the same container. This dilutor may also be used to pipet standards and prepare serial dilutions. 

Patty Jones checks the operation of an automatic mechanical vacuum extractor in the chemistry section of the Natural Resources Conservation Service (NRCS) Soil Survey Laboratory in Lincoln, Nebraska. 

Home pagefor the Natural Resources Conservation Service of the U.S. Department of Agriculture. The mission of this department is to help people conserve, improve, and sustain our natural resources and environment. 

USDA-NRCS Plants Database United State Department of Agriculture Plant (USDA) and Natural Resources Conservation Service (NRCS) Plants Database URL http //plants.usda.gov/index.html accessed 7-9-2005. 

The 2001 Natural Resources Inventory (Natural Resources Conservation Service, 2003) shows dramatic decreases in erosion in the United States since 1982. Much of this reduction can be credited to adoption of conservation tillage, partly as a result of Conservation Compliance. Sheet and rill erosion fell from an average 9.2 X 103kg/ha/yr in 1982 to 6.2 X 103kg/ha/yr in 2001, a 33% drop. The average wind erosion rate also dropped 36% during the same period. 

Natural Resources Conservation Service (2003). Natural Resource Inventory 2001 Annual NRI Soil Erosion. Washington, DC US Department of Agriculture, July 2003, 4 pp. 

Schoeneberger P. J., Wysocki, D. A., Benham, E. C., and Broderson W. D. (Eds.) (2002). Field Book for Describing and Sampling Soils, Version 2.0. Lincoln, NE Natural Resources Conservation Service, National Soil Survey Center. 

Department of Agriculture, Natural Resources Conservation Service. 

Natural Resources Conservation Service (NRCS). 2003, July. Soil Erosion. Natural Resources Inventory Annual, 2001. http //www.nrcs.usda.gov/TECHNICAL/land/nrioi/nrioieros. html (accessed August 22, 2006). 

Natural Resources Conservation Service. 2006. http //www.nrcs.usda.gov/... 

Natural Resources Conservation Service, PLANTS profile, Hydrastis candensis L. goldenseal, in PLANTS Database, US Department of Agriculture, http //plants.usda.gov/java/profile symbol=HYCA, accessed 23 April 2009. 

US Department of Agraiculture, Natural Resources Conservation Service. The Plants Database. Baton Rouge, LA National Plant Data Center, 2004. 

United States Department of Agriculture Natural Resources Conservation Service, http //soils.usda.gov/education/facts/formation.html... 

This concept was adopted by pedologists and identifies these soils as subaqueous soils, which are permanently flooded soils that occur immediately below a water depth of <2.5 m. These soils have been mapped in an estuarine environment (Demas et al., 1996 Demas and Rabenhorst, 1999). The Natural Resource Conservation Service has amended the definition of soil to include sediments under as much as 2.5 m water (Soil Survey Staff, 1999). The justification used for including sediments of shallow water environments is that these sediments undergo soil-forming processes and are capable of supporting rooted plants, and meet the definition of soil according to the criteria defined in Soil Taxonomy. 

Collective (1998) Keys to Soil Taxonomy, 8th ed United States Department of Agriculture (USDA), Natural Resources Conservation Service, Washington D.C. 

In 1935, the United States Congress established the Soil Conservation Service (now the Natural Resources Conservation Service) to provide for ongoing work to conserve the nation s soils. This act established soil conservation as a national priority independent of agricultural programs, which had for-reaching advantages borne out by more recent... 

Other federal and regional agencies that record specialized stream-flow data include the Tennessee Valley Authority (TVA), Bureau of Reclamation, Natural Resources Conservation Service (NRGS), U.S. Forest Service, and the Agricultural Research Service (ARS). 

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