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You searched for: Journal Transactions of the ASAE Remove constraint Journal: Transactions of the ASAE Subject agricultural land Remove constraint Subject: agricultural land Subject term agricultural land Remove constraint Subject term: agricultural land
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1. Modeling sediment trapping in a vegetative filter accounting for converging overland flow

Author:
Helmers, M.J.; Eisenhauer, D.E.; Franti, T.G.; Dosskey, M.G.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 541-555
ISSN:
0001-2351
Subject:
overland flow; filter strips; erosion control; sediment deposition; hydrologic models; agricultural land; soil erosion models; Nebraska
Abstract:
... Vegetative filters (VF) are used to remove sediment and other pollutants from overland flow. When modeling the hydrology of VF, it is often assumed that overland flow is planar, but our research indicates that it can be two-dimensional with converging and diverging pathways. Our hypothesis is that flow convergence will negatively influence the sediment trapping capability of VF. The objectives wer ...
Handle:
10113/5491

2. Sensitivity analysis of soil and PM₁₀ loss in WEPS using the LHS-OAT method

Author:
Feng, G.; Sharratt, B.
Source:
Transactions of the ASAE 2005 v.48 no.4 pp. 1409-1420
ISSN:
0001-2351
Subject:
air quality; mathematical models; agricultural soils; agricultural land; soil properties; soil erosion models; wind erosion; Oregon
Abstract:
... The Wind Erosion Prediction System (WEPS) was developed for the specific application of simulating erosion processes from agricultural lands. WEPS is a physically based model, with a moderate to large number of input parameters. Knowledge about model sensitivity is essential to both model developers and users in ascertaining those parameters most influential to modeled object functions. A combined ...
Handle:
10113/5516

3. Cost-effective BMP placement: optimization versus targeting

Author:
Veith, T.L.; Wolfe, M.L.; Heatwole, C.D.
Source:
Transactions of the ASAE 2004 v.47 no.5 pp. 1585-1594
ISSN:
0001-2351
Subject:
best management practices; agricultural watersheds; pollution control; nonpoint source pollution; algorithms; cost effectiveness; watershed management; sediment yield; water erosion; geographic information systems; agricultural land; cost benefit analysis; Virginia
Abstract:
... Cost-effectiveness of nonpoint-source pollution reduction programs in an agricultural watershed depends on the selection and placement of control measures within the watershed. Locations for best management practices (BMPs) are commonly identified through targeting strategies that define locations for BMP implementation based on specific criteria uniformly applied across the watershed. The goal of ...
Handle:
10113/9722

4. Farm-level optimization of BMP placement for cost-effective pollution reduction

Author:
Gitau, M.W.; Veith, T.L.; Gburek, W.J.
Source:
Transactions of the ASAE 2004 v.47 no.6 pp. 1923-1931
ISSN:
0001-2351
Subject:
best management practices; Soil and Water Assessment Tool model; nonpoint source pollution; algorithms; pollution control; agricultural runoff; pollutants; agricultural land; agricultural watersheds; phosphorus; phosphorus fertilizers; water pollution; fertilizer application; New York
Abstract:
... With best management practices (BMPs) being used increasingly to control agricultural pollutant losses to surface waters, establishing the environmental effectiveness of these practices has become important. Additionally, cost implications of establishing and maintaining environmentally effective BMPs are often a crucial factor in selecting and adopting BMPs. This article considers both water qual ...
Handle:
10113/9729

5. Dissolved phosphorus transport during storm and base flow conditions from an agriculturally intensive southeastern Coastal Plain watershed

Author:
Novak, J.M.; Stone, K.C.; Watts, D.W.; Johnson, M.H.
Source:
Transactions of the ASAE 2003 v.46 no.5 pp. 1355-1363
ISSN:
0001-2351
Subject:
coastal plains; agricultural watersheds; stream flow; losses from soil; phosphorus; agricultural land; nonpoint source pollution; water quality; rain; pollution load; storms; North Carolina
Abstract:
... The high density of animal production in southeastern Coastal Plain watersheds has caused some soils to contain excess amounts of plant-available soil phosphorus (P). Runoff, erosion, and leaching can transport P to surface water systems and out of these watersheds. High P concentrations in downstream aquatic ecosystems can increase the risk of eutrophication. Our objectives were to determine stre ...
Handle:
10113/18976

6. Water, Sediment, Nutrient, and Pesticide Measurements in an Agricultural Watershed in Illinois During Storm Events

Author:
Borah, D.K.; Bera, M.; Shaw, S.
Source:
Transactions of the ASAE 2003 v.46 no.3 pp. 657-674
ISSN:
0001-2351
Subject:
agricultural land; agricultural watersheds; atrazine; climate; databases; growing season; land cover; mathematical models; meteorological data; metolachlor; nitrate nitrogen; rivers; sediments; spring; storms; suspended sediment; Illinois
Abstract:
... Flow and concentrations of suspended sediment, nitrate-N, phosphate-P, atrazine, and metolachlor were monitored during the spring seasons of 1998 and 1999, primarily during storm events, at a tributary station (Big Ditch) and two main-stem stations (Fisher and Mahomet) of the Upper Sangamon River watershed in east central Illinois. These three stations respectively drain 98, 622, and 932 km 2 of m ...
DOI:
10.13031/2013.13601

7. Effects of Laying Hen Manure Application Rate on Water Quality

Author:
Chinkuyu, A.J.; Kanwar, R.S.; Lorimor, J.C.; Xin, H.; Bailey, T.B.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 299-308
ISSN:
0001-2351
Subject:
agricultural land; ammonium nitrate; animal manures; corn; crop yield; fertilizer rates; fertilizers; groundwater; laying hens; lysimeters; manure spreading; nitrate nitrogen; nitrogen; orthophosphates; runoff; surface quality; urea ammonium nitrate; water pollution; water quality
Abstract:
... Excessive use of animal manure on agricultural lands can impact the quality of surface and groundwater resources. A three-year study (1998-2000) was conducted on nine 0.4-ha plots and on six 2.1-m 2 lysimeters to investigate the effect of two nitrogen (N) application rates from laying hen manure and one N application rate from urea ammonium nitrate (UAN) fertilizer on surface and groundwater quali ...
DOI:
10.13031/2013.8524

8. 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. 1183-1190
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

9. 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. 1201-1206
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

10. Water quality impacts associated with converting farmland and forests to turfgrass

Author:
King, K.W.; Balogh, J.C.
Source:
Transactions of the ASAE 2001 v.44 no.3 pp. 569-576
ISSN:
0001-2351
Subject:
environmental impact; land use; simulation models; agricultural land; silviculture; urbanization
Abstract:
... Three to four hundred new or renovated turfgrass systems are constructed in the U.S. each year. Many of these systems (golf courses, city parks, and residential and institutional lawns) are constructed in agricultural and silvicultural environments. However, knowledge of the water quality impact in transitioning from an agricultural or silvicultural landscape to a turfgrass landscape is at best li ...
Handle:
10113/26650

11. Nitrate-N distribution and trends in shallow groundwater on an eastern Coastal Plains Watershed

Author:
Stone, K.C.; Hunt, P.G.; Johnson, M.H.; Matheny, T.A.
Source:
Transactions of the ASAE 1998 v.41 no.1 pp. 59-64
ISSN:
0001-2351
Subject:
groundwater contamination; agricultural land; nitrate nitrogen; watersheds; drinking water; land application; pig manure; North Carolina
Abstract:
... Nonpoint source pollution from agriculture has been a major concern, particularl y where intensive agricultural operations exist near environmentally sensitive w aters. To address these nonpoint source pollution concerns, a Water Quality Demo nstration Project (WQDP) was initiated on the Herrings Marsh Run (HMR) watershed in Duplin County, North Carolina. The WQDP was implemented to determine wate ...
Handle:
10113/18068

12. Geometric shaping and contouring of land as related to potential for surface-water storage

Author:
Doty, C.W.; Wiersma, J.L.
Source:
Transactions of the ASAE 1969 v.12 no.3 pp. 322-328
Subject:
soil water storage; water conservation; agricultural land; topography; drainage; surface water; South Dakota
Handle:
10113/17645