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- Author:
- F. W. Chichester; C. W. Richardson
- Source:
- Journal of environmental quality 1992 v.21 no.4 pp. 587-590
- ISSN:
- 0047-2425
- Subject:
- Sorghum bicolor; Triticum aestivum; Vertisols; Zea mays; agricultural land; agricultural runoff; chiseling; clay; clay soils; corn; environmental fate; losses from soil; no-tillage; nutrients; pollutants; rain; sediments; water pollution; water resources; watersheds; wheat; Texas
- Abstract:
- ... Agricultural source pollution of water resources has been a source of concern in recent years. Research is needed to define mechanisms of chemical and sediment loss in runoff from agricultural land, and to develop management practices that minimize transport of these pollutants. This study was designed to compare the effect of no-till (NT) and conventional chisel-till (CT) soil management on runof ...
- DOI:
- 10.2134/jeq1992.00472425002100040010x
- https://doi.org/10.2134/jeq1992.00472425002100040010x
- Author:
- Andrew N. Sharpley; S.J. Smith; O.R. Jones; W.A. Berg; G.A. Coleman
- Source:
- Journal of environmental quality 1992 v.21 no.1 pp. 30-35
- ISSN:
- 0047-2425
- Subject:
- minimum tillage; grasses; no-tillage; agricultural land; bioavailability; phosphorus fertilizers; fallow; watersheds; losses from soil; Triticum aestivum; stubble mulching; Sorghum bicolor; Arachis hypogaea; phosphorus; crop rotation; runoff; Oklahoma; Texas
- Abstract:
- ... Bioavailable P (BAP) in agricultural runoff represents P potentially available for algal uptake and consists of soluble P (SP) and a variable portion of participate P (PP). Evaluation of the impact of agricultural management on BAP in runoff will aid assessment of the resultant biological productivity of receiving water bodies. Soluble P, PP, and bioavailable PP (BPP) (estimated by NaOH extraction ...
- Handle:
- 10113/19851
- DOI:
- 10.2134/jeq1992.00472425002100010003x
- https://doi.org/10.2134/jeq1992.00472425002100010003x
- Author:
- Sharpley, A.; Smith, S.J.; Zollweg, J.A.; Coleman, G.A.
- Source:
- Journal of soil and water conservation 1996 v.51 no.6 pp. 498-503
- ISSN:
- 0022-4561
- Subject:
- water pollution; sediments; simulation models; water quality; pollution control; Cynodon dactylon; agricultural land; nitrogen; ponds; bioavailability; watersheds; losses from soil; land restoration; cost benefit analysis; eutrophication; gully erosion; phosphorus; runoff; Oklahoma
- Abstract:
- ... Erosion of agricultural land and transport of associated fertilizer chemicals nitrogen (N) and phosphorus (P) in runoff, can be detrimental to both soil productivity and water quality. In the Southern Plains, gully erosion is of concern due to periodically intense rainfall and a large acreage of erodible soils. As little information is available, we studied the loss of sediment, N, and P in runoff ...
- Handle:
- 10113/20714
- Author:
- Hooda, P.S.; Moynagh, M.; Svoboda, I.F.; Thurlow, M.; Stewart, M.; Thomson, M.; Anderson, H.A.
- Source:
- Soil use and management 1997 v.13 no.4 pp. 196-204
- ISSN:
- 0266-0032
- Subject:
- agricultural land; watersheds; phosphorus; losses from soil; land use; soil types; streams; eutrophication; Scotland
- Abstract:
- ... Phosphorus concentrations and outputs have been compared and contrasted in six small agricultural catchments in the west and northeast of Scotland. The loss of P from soils to stream waters was more from catchments with intensive dairy cattle farming in the west than from the less intensively stocked/arable catchments in the northeast, with striking differences being seen between the two regions. ...
- DOI:
- 10.1111/j.1475-2743.1997.tb00586.x
- https://doi.org/10.1111/j.1475-2743.1997.tb00586.x
- Author:
- Louis V. Verchot; E. Carlyle Franklin; J. Wendell Gilliam
- Source:
- Soil Science Society of America journal 1998 v.62 no.6 pp. 1719-1724
- ISSN:
- 0361-5995
- Subject:
- water pollution; pollution control; laboratory techniques; agricultural land; glucose; nitrate nitrogen; soil depth; watersheds; soil microorganisms; losses from soil; nonpoint source pollution; forest soils; soil profiles; population; denitrification; microbial activity; runoff; environmental exposure; nitrates; North Carolina
- Abstract:
- ... Forested filter zones (FFZ) are being used more frequently for remediation of agricultural non-point source pollution. The objective of this study was to determine the effects of short-term dispersal (1–2 yr) of agricultural runoff on the denitrification potential of the soil microbial population and denitrification rates, to a depth of 1 m, in forest soils in two small watersheds (W1 and W2) in t ...
- DOI:
- 10.2136/sssaj1998.03615995006200060033x
- https://doi.org/10.2136/sssaj1998.03615995006200060033x
- Author:
- Domburg, P.; Edwards, A.C.; Sinclair, A.H.; Chalmers, N.A.
- Source:
- Journal of the science of food and agriculture 2000 v.80 no.13 pp. 1946-1952
- ISSN:
- 0022-5142
- Subject:
- nutrient content; farm inputs; watersheds; phosphorus; application rate; grasslands; farms; nutrient uptake; losses from soil; crop production; agricultural land; cattle; cattle production; nitrogen fertilizers; chickens; grain crops; nitrogen; sheep; phosphorus fertilizers; Scotland
- Abstract:
- ... Farm nutrient budgets related to 1994 were calculated for seven farm types, accounting for approximately 90% of the agricultural land in the River Ythan catchment, NE Scotland. The magnitude of fluxes of nitrogen (N) and phosphorus (P) at the catchment scale in relation to these farm types was also assessed. Positive budgets were calculated for all farm types, with the largest surpluses estimated ...
- DOI:
- 10.1002/1097-0010(200010)80:13<1946::AID-JSFA736>3.0.CO;2-Q
- https://doi.org/10.1002/1097-0010(200010)80:13<1946::AID-JSFA736>3.0.CO;2-Q
- Author:
- Yuan, Y.; Bingner, R.L.; Rebich, R.A.
- Source:
- Transactions of the ASAE 2001 v.44 no.5 pp. 1183-1190
- 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
- Author:
- Novak, J.M.; Watts, D.W.; Stone, K.C.; Johnson, M.H.
- Source:
- Transactions of the ASAE 2001 v.44 no.5 pp. 1201-1206
- ISSN:
- 0001-2351
- Subject:
- water pollution; atrazine; cyanazine; agricultural land; herbicide residues; watersheds; losses from soil; streams; seasonal variation; metolachlor; alachlor; ametryn; coastal plains; 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
- Author:
- Sharpley, A.N.; Kleinman, P.J.A.; McDowell, R.W.; Gitau, M.; Bryant, R.B.
- Source:
- Journal of soil and water conservation 2002 v.57 no.6 pp. 425-439
- ISSN:
- 0022-4561
- Subject:
- water pollution; overland flow; simulation models; animal manures; agricultural land; phosphorus fertilizers; watersheds; losses from soil; soil fertility; phosphorus; water erosion; subsurface flow
- Abstract:
- ... Skip to main page content HOME CURRENT ISSUE ARCHIVE FEEDBACK SUBSCRIPTIONS ALERTS HELP Keywords Search Advanced »User Name Password Sign In Modeling phosphorus transport in agricultural watersheds: Processes and possibilities A. N. Sharpley, P. J. A. Kleinman, R. W. McDowell, M. Gitau, and R. B. Bryant ABSTRACT: Modeling phosphorus (P) loss from agricultural watersheds is key to quantifying the l ...
- Handle:
- 10113/23631
- Author:
- Shan, B.; Yin, C.; Li, G.
- Source:
- Water, air, and soil pollution 2002 v.139 no.1/4 pp. 15-34
- ISSN:
- 0049-6979
- Subject:
- water pollution; pollution control; surface water; agricultural land; ponds; watersheds; losses from soil; water flow; constructed wetlands; phosphorus; runoff; China
11. Soil erosion and significance for carbon fluxes in a mountainous Mediterranean-climate watershed
- Author:
- Smith, S.V.; Bullock, S.H.; Hinojosa-Corona, A.; Franco-Vizcaino, E.; Escoto-Rodriguez, M.; Kretzchmar, T.G.; Farfan, L.M.; Salazar-Cesena, J.M.
- Source:
- Ecological applications 2007 v.17 no.5 pp. 1379-1387
- ISSN:
- 1051-0761
- Subject:
- Revised Universal Soil Loss Equation; shrublands; soil organic carbon; agricultural land; mountains; watersheds; losses from soil; Mediterranean climate; water erosion; biogeochemical cycles; Mexico
- DOI:
- 10.1890/06-0615.1
- PubMed:
- 17708215
- https://doi.org/10.1890/06-0615.1
- Author:
- Darracq, Amelie; Lindgren, Georg; Destouni, Georgia
- Source:
- Global biogeochemical cycles 2008 v.22 no.3 pp. -
- ISSN:
- 0886-6236
- Subject:
- simulation models; agricultural watersheds; groundwater contamination; nitrogen; agricultural land; losses from soil; nonpoint source pollution; point source pollution; phosphorus; Sweden
- Author:
- Xiaoxia Chen; Charles T. Driscoll
- Source:
- Journal of environmental quality 2009 v.38 no.5 pp. 2084-2095
- ISSN:
- 1537-2537
- Subject:
- watersheds; land use; eutrophication; surface water; water quality; vegetation cover; temporal variation; rivers; spatial variation; nutrient content; nonpoint source pollution; forests; agricultural land; nitrate nitrogen; nitrogen; dissolved organic carbon; phosphorus; sodium; potassium; calcium; magnesium; chlorides; sulfates; losses from soil; Lake Ontario; New York
- Abstract:
- ... There is considerable interest in understanding the role of land use in controlling surface water quality. This study was conducted to assess the role of land cover in regulating temporal and spatial patterns in nutrients and major solutes in rivers that drain into Lake Ontario. Water samples were collected monthly from 22 river sites in subwatersheds of eight embayments along the New York coast o ...
- DOI:
- 10.2134/jeq2007.0435
- PubMed:
- 19704151
- https://doi.org/10.2134/jeq2007.0435
- Author:
- Perry, Ann
- Source:
- Agricultural research 2010 v.58 no.7 pp. 4-8
- ISSN:
- 0002-161X
- Subject:
- watershed management; crop yield; phosphorus; agricultural watersheds; dairy cows; pollution control; animal manure management; feces; losses from soil; agrochemicals; dairy farming; weather forecasting; point source pollution; nutrient management; water pollution; soil water content; agricultural land; arsenic; agricultural runoff; best management practices; poultry manure; pollutants; nutrient requirements; drinking water; nitrogen fertilizers; riparian buffers; Agricultural Research Service; fertilizer rates; streams; pollution load; poultry industry; Chesapeake Bay; Appalachian region; Pennsylvania; Maryland
- Handle:
- 10113/44320
15. Assessing the long term impact of phosphorus fertilization on phosphorus loadings using AnnAGNPS
- Author:
- Yuan, Yongping; Bingner, Ronald L.; Locke, Martin A.; Stafford, Jim; Theurer, Fred D.
- Source:
- International journal of environmental research and public health 2011 v.8 no.6 pp. 2181-2199
- ISSN:
- 1660-4601
- Subject:
- phosphorus fertilizers; agricultural land; water quality; fertilizer rates; nonpoint source pollution; pollution load; environmental models; watersheds; calibration; phosphorus; losses from soil; simulation models; Ohio
- Abstract:
- ... High phosphorus (P) loss from agricultural fields has been an environmental concern because of potential water quality problems in streams and lakes. To better understand the process of P loss and evaluate the effects of different phosphorus fertilization rates on phosphorus losses, the USDA Annualized AGricultural Non-Point Source (AnnAGNPS) pollutant loading model was applied to the Ohio Upper A ...
- Handle:
- 10113/49962
- DOI:
- 10.3390/ijerph8062181
- PubMed:
- 21776225
- PubMed Central:
- PMC3138020
- https://doi.org/10.3390/ijerph8062181
16. CO₂ dynamics along Danish lowland streams: water–air gradients, piston velocities and evasion rates
- Author:
- Kaj Sand-Jensen; Peter Anton Staehr
- Source:
- Biogeochemistry 2012 v.111 no.1-3 pp. 615-628
- ISSN:
- 0168-2563
- Subject:
- agricultural land; air; carbon; carbon dioxide; groundwater; hydrologic cycle; lakes; losses from soil; soil water; stream flow; streams; summer; velocity; watersheds; wells; Denmark
- Abstract:
- ... We measured CO₂ concentration and determined evasion rate and piston velocity across the water–air interface in flow-through chambers at eight stations along two 20 km long streams in agricultural landscapes in Zealand, Denmark. Both streams were 9–18-fold supersaturated in CO₂ with daily means of 240 and 340 μM in January–March and 130 and 180 μM in June–August. Annual CO₂ medians were 212 μM in ...
- DOI:
- 10.1007/s10533-011-9696-6
- https://doi.org/10.1007/s10533-011-9696-6
- Author:
- Zheng-Feng HU; Ming GAO; De-Ti XIE; Zi-Fang WANG
- Source:
- Pedosphere 2013 v.23 no.3 pp. 385-394
- ISSN:
- 1002-0160
- Subject:
- agricultural land; eutrophication; losses from soil; particulates; phosphorus; rain; runoff; sediment transport; sediments; topographic slope; watersheds; China
- Abstract:
- ... Eutrophication in the Three Gorges Reservoir has become a serious issue, and phosphorus (P) is the nutrient thought to be primarily responsible although there are few studies about P loss from the mostly sloping farmlands of the area. This work investigated the amounts and forms of P loss from 9 farmlands with the slopes of 4°, 9°, and 17° in a small watershed, Wangjiagou in Fuling District, Chong ...
- DOI:
- 10.1016/S1002-0160(13)60030-2
- https://doi.org/10.1016/S1002-0160(13)60030-2
- Author:
- Henrique G. Momm; Ronald L. Bingner; Yongping Yuan; Martin A. Locke; Robert R. Wells
- Source:
- Journal of environmental quality 2014 v.43 no.5 pp. 1736-1753
- ISSN:
- 0047-2425
- Subject:
- AGNPS model; agricultural land; geographic information systems; losses from soil; nutrient transport; overland flow; pollution load; riparian areas; riparian buffers; sediment deposition; sediments; topography; topsoil; vegetation types; watersheds
- Abstract:
- ... Understanding all watershed systems and their interactions is a complex, but critical, undertaking when developing practices designed to reduce topsoil loss and chemical/nutrient transport from agricultural fields. The presence of riparian buffer vegetation in agricultural landscapes can modify the characteristics of overland flow, promoting sediment deposition and nutrient filtering. Watershed si ...
- Handle:
- 10113/59589
- DOI:
- 10.2134/jeq2013.10.0413
- https://doi.org/10.2134/jeq2013.10.0413
- Author:
- Heinz Marlen; Graeber Daniel; Zak Dominik; Zwirnmann Elke; Gelbrecht Joerg; Pusch Martin T.
- Source:
- Environmental Science & Technology 2015 v.49 no.4 pp. 2081-2090
- ISSN:
- 1520-5851
- Subject:
- temporal variation; dissolved organic nitrogen; fluorometry; agricultural soils; absorbance; agricultural land; aquatic environment; streams; gel chromatography; losses from soil; carbon nitrogen ratio; agricultural management; dissolved organic carbon; temperate zones; watersheds; molecular weight; land use; forests; Germany
- Abstract:
- ... Agricultural management practices promote organic matter (OM) turnover and thus alter both the processing of dissolved organic matter (DOM) in soils and presumably also the export of DOM to headwater streams, which intimately connect the terrestrial with the aquatic environment. Size-exclusion chromatography, in combination with absorbance and emission matrix fluorometry, was applied to assess how ...
- DOI:
- 10.1021/es505146h
- https://doi.org/10.1021/es505146h
- Author:
- Lars Bergström; Holger Kirchmann; Faruk Djodjic; Katarina Kyllmar; Barbro Ulén; Jian Liu; Helena Andersson; Helena Aronsson; Gunnar Börjesson; Pia Kynkäänniemi; Annika Svanbäck; Ana Villa
- Source:
- Journal of environmental quality 2015 v.44 no.2 pp. 512-523
- ISSN:
- 0047-2425
- Subject:
- agricultural land; agricultural soils; ammonium lactate; best management practices; catch crops; clay soils; constructed wetlands; cropping systems; eutrophication; leaching; liming; losses from soil; manure spreading; mineral fertilizers; monitoring; nutrient use efficiency; phosphorus; pig manure; soil fertility; surface water; total phosphorus; water quality; watersheds; weather
- Abstract:
- ... Transport of phosphorus (P) from agricultural fields to water bodies deteriorates water quality and causes eutrophication. To reduce P losses and optimize P use efficiency by crops, better knowledge is needed of P turnover in soil and the efficiency of best management practices (BMPs). In this review, we examined these issues using results from 10 Swedish long-term soil fertility trials and variou ...
- DOI:
- 10.2134/jeq2014.04.0165
- https://doi.org/10.2134/jeq2014.04.0165