U.S. flag

An official website of the United States government

PubAg

Main content area

You searched for: Publication Year 2001 Remove constraint Publication Year: 2001 Subject water pollution Remove constraint Subject: water pollution Subject agricultural land Remove constraint Subject: agricultural land
Start Over

Search

7  Search Results

1 - 7 of 7
Number of results to display per page

Search Results

1. Identifying critical sources of phosphorus export from agricultural watersheds

Author:
Weld, J.L.; Sharpley, A.N.; Beegle, D.B.; Gburek, W.J.
Source:
Nutrient cycling in agroecosystems 2001 v.59 no.1 pp. 29
ISSN:
1385-1314
Subject:
agricultural land; watersheds; phosphorus; leaching; risk assessment; soil fertility; runoff; water quality; eutrophication; land use; hydrology; water pollution; Pennsylvania
Abstract:
... Surface runoff accounts for much of the phosphorus (P) input to and accelerated eutrophication of the fresh waters. Several states have tried to establish general threshold soil P levels above which the enrichment of surface runoff P becomes unacceptable. However, little information is available on the relationship between soil and surface runoff P, particularly for the northeastern United States. ...
Handle:
10113/18735

2. Least-cost management of nonpoint source pollution: source reduction versus interception strategies for controlling nitrogen loss in the Mississippi Basin

Author:
Ribaudo, Marc O.; Heimlich, Ralph; Claassen, Roger; Peters, Mark
Source:
Ecological economics 2001 v.37 no.2 pp. 183
Subject:
watersheds; agricultural watersheds; nonpoint source pollution; agricultural runoff; nitrogen; pollution control; nitrogen fertilizers; fertilizer rates; agricultural land; wetlands; wetland conservation; pollution load; cost benefit analysis; cost effectiveness; water pollution; Mississippi River
Abstract:
... Nutrient pollution is one of the major sources of water quality impairments in the U.S. Agriculture is a major source of nutrients. Two alternative strategies for reducing nutrient loads from cropland are to reduce fertilizer application rates and to filter nutrients coming off cropland with restored wetlands. These two approaches are evaluated in the Mississippi Basin, where nutrient loadings to ...
Handle:
10113/42663
DOI:
10.1016/S0921-8009(00)00273-1

3. Occurrence of compounds estrogenic to freshwater mussels in surface waters in an urban area

Author:
Gagne, F.; Marcogliese, D.J.; Blaise, C.; Gendron, A.D.
Source:
Environmental toxicology 2001 v.16 no.3 pp. 260-268
ISSN:
1520-4081
Subject:
water pollution; effluents; freshwater molluscs; mussels; agricultural land; urban areas; estrogenic properties; surface water; runoff; Quebec
Abstract:
... Estrogens play a major role in the sexual differentiation, gonad development, and oocyte growth of most oviparous organisms. They also stimulate vitellogenesis, the formation of high-density glycolipophosphoprotein that serves as an energy source for the developing embryo. Surface waters from the St. Lawrence River, obtained in the vicinity of an urban area (Montreal, Quebec, Canada), were studied ...
DOI:
10.1002/tox.1032
PubMed:
11409198

4. Contamination of river water by Cryptosporidium parvum oocysts in western Japan

Author:
Ono, K.; Tsuji, H.; Rai, S.K.; Yamamoto, A.; Masuda, K.; Endo, T.; Hotta, H.; Kawamura, T.; Uga, S.
Source:
Applied and environmental microbiology 2001 v.67 no.9 pp. 3832-3836
ISSN:
0099-2240
Subject:
Cryptosporidium parvum; oocysts; water pollution; runoff; agricultural land; restriction fragment length polymorphism; cattle manure; livestock production; river water; Japan
Abstract:
... In Japan, only a few rivers have been inspected for Cryptosporidium parvum contamination, and the methods used had low sensitivity. In 1998 and 1999, we used a method with higher sensitivity to examine all large rivers used as sources of water supply in one prefecture (which we divided into four areas) in western Japan for Cryptosporidium oocysts. One sample was collected at each of 156 sites alon ...
DOI:
10.1128/AEM.67.9.3832-3836.2001
PubMed:
11525974
PubMed Central:
PMC93098

5. Evaluation of AnnAGNPS on Mississippi Delta MSEA watersheds

Author:
Yuan, Y.; Bingner, R.L.; Rebich, R.A.
Source:
Transactions of the ASAE 2001 v.44 no.5 pp. 1183
ISSN:
0001-2351
Subject:
watersheds; crop production; crop management; cover crops; winter; pollution control; water pollution; erosion control; water erosion; sediment yield; simulation models; agricultural land; losses from soil; runoff; prediction; best management practices; nonpoint source pollution; Mississippi
Abstract:
... Sediment and its associated pollutants entering a water body can be very destructive to the health of that system. Best Management Practices (BMPs) can be used to reduce these pollutants, but understanding the most effective practices is very difficult. Watershed models are the most cost-effective tools to aid in the decision-making process of selecting the BMP that is most effective in reducing t ...
Handle:
10113/26652

6. Seasonal occurrence and export of five herbicides from a North Carolina Coastal Plain watershed

Author:
Novak, J.M.; Watts, D.W.; Stone, K.C.; Johnson, M.H.
Source:
Transactions of the ASAE 2001 v.44 no.5 pp. 1201
ISSN:
0001-2351
Subject:
coastal plains; watersheds; herbicide residues; alachlor; ametryn; cyanazine; metolachlor; atrazine; herbicides; losses from soil; streams; water pollution; agricultural land; seasonal variation; North Carolina
Abstract:
... Herbicide detection in surface water sources has caused concern about contamination of these sources and adverse effects on human and aquatic health. Understanding surface water herbicide transport from agriculturally intensive watersheds is useful for development of herbicide best management practices to reduce off-site movement. The seasonal occurrence and load of five herbicides exported by a s ...
Handle:
10113/18427

7. Assessing Site Vulnerability to Phosphorus Loss in an Agricultural Watershed

Author:
Sharpley, Andrew N.; McDowell, Richard W.; Weld, Jennifer L.; Kleinman, Peter J. A.
Source:
Journal of environmental quality 2001 v.30 no.6 pp. 2026
ISSN:
1537-2537
Subject:
phosphorus; losses from soil; agricultural land; watersheds; nonpoint source pollution; land classification; risk assessment; water erosion; Revised Universal Soil Loss Equation; rain; runoff; leaching; soil fertility; fields; animal manures; animal manure management; manure spreading; water pollution; nutrient management; Pennsylvania
Abstract:
... A P index was developed as a tool to rank agricultural fields on the basis of P loss vulnerability, helping to target remedial P management options within watersheds. We evaluated two approaches, a soil P threshold and components of a P index, by comparing site vulnerability estimates derived from these two approaches with measured runoff P losses in an agricultural watershed in Pennsylvania. Rain ...
Handle:
10113/12926
DOI:
10.2134/jeq2001.2026
PubMed:
11790010