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You searched for: Journal name Transactions of the ASAE Remove constraint Journal name: Transactions of the ASAE Subject term North Carolina Remove constraint Subject term: North Carolina
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1. Stream water levels affect field water tables and corn yields

Author:
Doty, C.W.; Parsons, J.E.; Nassehzadeh-Tabrizi, A.; Skaggs, R.W.; Badr, A.W.
Source:
Transactions of the ASAE 1984 v.27 no.5 pp. 1300-1306
ISSN:
0001-2351
Subject:
corn; streams; yields; North Carolina
Abstract:
... A section of land about 1800 m wide and 4000 m along Mitchell Creek in Edgecombe and Pitt Counties, North Carolina, was studied for three years, 1980, 1981, and 1982. During 1980 and 1981 the deep channel in these sandy soils caused a water table drawdown of about 3 m near the stream. The water table was affected 884 m away. Corn yields near the creek were one-half those at 800 m from the creek. S ...
Handle:
10113/17737

2. Development and testing of a water management model (WATRCOM): field testing

Author:
Parsons, J.E.; Doty, C.W.; Skaggs, R.W.
Source:
Transactions of the ASAE 1991 v.34 no.4 pp. 1674-1682
ISSN:
0001-2351
Subject:
simulation models; water conservation; fluid mechanics; watersheds; drainage; water table; North Carolina
Abstract:
... Water table observations from the 1000 ha watershed of Mitchell Creek near Tarboro, NC, were used to field test the water management model, WATRCOM. Soil properties and channel boundary conditions from three sections of the watershed along with weather data from years 1983 and 1984 were used to simulate the hydrology of the area with and without channel water level control. Six transects containin ...
Handle:
10113/18149

3. GLEAMS simulation of groundwater nitrate-N from row crop and swine wastewater spray fields in the eastern Coastal Plain

Author:
Stone, K.C.; Hunt, P.G.; Johnson, M.H.; Coffey, S.W.
Source:
Transactions of the ASAE 1998 v.41 no.1 pp. 51-57
ISSN:
0001-2351
Subject:
groundwater contamination; nitrate nitrogen; nitrogen fertilizers; land application; simulation models; prediction; grasslands; pig manure; North Carolina
Abstract:
... Nonpoint source pollution of surface and groundwater resulting from agricultural management practices is a major water quality problem. This problem was assesse d on a demonstration watershed in the Cape Fear River Basin of North Carolina, d uring a five-year study. Groundwater was monitored in a row crop field (corn/whe at/soybean) and a swine waste spray field (Coastal bermuda grass). Groundwate ...
Handle:
10113/18067

4. 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

5. Pesticides and metabolites in the shallow groundwater of an eastern Coastal Plain watershed

Author:
Novak, J.M.; Watts, D.W.; Stone, K.C.; Johnson, M.H.; Hunt, P.G.
Source:
Transactions of the ASAE 1998 v.41 no.5 pp. 1383-1390
ISSN:
0001-2351
Subject:
pesticides; metabolites; wells; drinking water; public health; North Carolina
Abstract:
... The occurrence of pesticides in drinking water sources is a public concern because of potential adverse health effects. We report the results of a three-year study to assess the occurrence of pesticides and metabolites in shallow groundwater in a USDA Water Quality Demonstration Project (WQDP). The Herrings Marsh Run (HMR) watershed is located in the eastern Coastal Plain region of North Carolina ...
Handle:
10113/18023

6. Flow-proportional, time-composited, and grab sample estimation of nitrogen from an eastern Coastal Plain watershed

Author:
Stone, K.C.; Hunt, P.G.; Novak, J.M.; Johnson, M.H.; Watts, D.W.
Source:
Transactions of the ASAE 2000 v.43 no.2 pp. 281-290
ISSN:
0001-2351
Subject:
sampling; stream flow; water quality; nitrate nitrogen; watersheds; ammonium nitrogen; North Carolina
Abstract:
... The balance between resources expended and information obtained is an integral aspect of water quality investigations. As part of a Water Quality Demonstration Project in the eastern Coastal Plain, we monitored stream water quality at the watershed outlet. Four methods of assessing stream water quality were compared. These methods were time-composite sampling with continuous flow measurements (TC) ...
Handle:
10113/18418

7. 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

8. Ammonia volatilization from constructed wetlands that treat swine wastewater

Author:
Poach, M.E.; Hunt, P.G.; Sadler, E.J.; Matheny, T.A.; Johnson, M.H.; Stone, K.C.; Humenik, F.J.; Rice, J.M.
Source:
Transactions of the ASAE 2002 v.45 no.3 pp. 619-627
Subject:
pig manure; wastewater; wastewater treatment; constructed wetlands; ammonia; volatilization; measurement; North Carolina
Abstract:
... Increasingly, large-scale animal production occurs in confinement where large per-unit-area quantities of waste are generated. With the increased scale of production, new environment-friendly technologies are needed to deal with the waste. Constructed wetlands are considered an alternative treatment, but it is not known if volatilization of free ammonia (NH3) governs nitrogen removal in these syst ...
Handle:
10113/18801

9. Constructed Wetlands for Treatment of Swine Wastewater from an Anaerobic Lagoon

Author:
Hunt, P.G.; Szögi, A.A.; Humenik, F.J.; Rice, J.M.; Matheny,T.A.; Stone, K.C.
Source:
Transactions of the ASAE 2002 v.45 no.3 pp. 639-647
ISSN:
0001-2351
Subject:
Typha latifolia; Schoenoplectus americanus; clay; carbon; sand; animal manure management; nitrate nitrogen; swine production; planting; Juncus effusus; plant growth; constructed wetlands; denitrification; enzyme activity; swine; plant litter; nitrogen; Schoenoplectus tabernaemontani; Typha angustifolia; topsoil; Sparganium; wastewater; nitrates; North Carolina
Abstract:
... Animal waste management is a national concern that demands effective and affordable methods of treatment. We investigated constructed wetlands from 1993 through 1997 at a swine production facility in North Carolina for their effectiveness in treatment of swine wastewater from an anaerobic lagoon. We used four wetland cells (3.6 × 33.5 m) with two cells connected in series. The cells were construct ...
DOI:
10.13031/2013.8827

10. Constructed wetlands for treatment of swine wastewater from an anaerobic logoon

Author:
Hunt, P.G.; Szogi, A.A.; Humenik, F.J.; Rice, J.M.; Matheny, T.A.; Stone, K.C.
Source:
Transactions of the ASAE 2002 v.45 no.3 pp. 639-647
Subject:
pig manure; wastewater; waste lagoons; wastewater treatment; anaerobic digestion; constructed wetlands; Scirpus; Juncus effusus; Sparganium; Typha; nitrogen; phosphorus; denitrification; redox potential; nitrate nitrogen; North Carolina
Abstract:
... Animal waste management is a national concern that demands effective and affordable methods of treatment. We investigated constructed wetlands from 1993 through 1997 at a swine production facility in North Carolina for their effectiveness in treatment of swine wastewater from an anaerobic lagoon. We used four wetland cells (3.6 x 33.5 m) with two cells connected in series. The cells were construct ...
Handle:
10113/18800

11. Effect of Riparian Buffer Width and Vegetation Type on Shallow Groundwater Quality in the Middle Coastal Plain of North Carolina

Author:
Dukes, M.D.; Evans, R.O.; Gilliam, J.W.; Kunickis, S.H.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 327-336
ISSN:
0001-2351
Subject:
Festuca; coastal plains; cool season grasses; corn; forests; groundwater; hardwood; hurricanes; indigenous species; mixing; monitoring; nitrate nitrogen; nitrates; no-tillage; pastures; riparian buffers; rye; streams; water quality; wells; North Carolina
Abstract:
... The effect of riparian buffer width and vegetation type on shallow groundwater quality has not been evaluated in the Middle Coastal Plain of North Carolina. Four riparian buffer vegetation types and no-buffer (no-till corn and rye rotation or pasture) were established at 8 and 15 m widths as follows: cool season grass (fescue), deep-rooted grass (switch grass), forest (pine and mixed hardwood), an ...
DOI:
10.13031/2013.8528

12. Management Practices for Sediment Reduction from Forest Roads in the Coastal Plains

Author:
Appelboom, T.W.; Chescheir, G.M.; Skaggs, R.W.; Hesterberg, D.L.
Source:
Transactions of the ASAE 2002 v.45 no.2 pp. 337-344
ISSN:
0001-2351
Subject:
coastal plains; edge effects; energy; forest roads; forests; grasses; gravel; pollutants; rain; runoff; surface water; North Carolina
Abstract:
... Sediment has been identified as one of the most important non-point source pollutants of surface waters. In forested areas, the predominant source of sediment is from the construction and maintenance of access roads, which contribute as much as 90% of the total eroded sediments. Seven different road management practices were studied to determine their effectiveness in reducing sediment production ...
DOI:
10.13031/2013.8529

13. Modeling Ammonia Emission from Swine Anaerobic Lagoons

Author:
Liang, Z.S.; Westerman, P.W.; Arogo, J.
Source:
Transactions of the ASAE 2002 v.45 no.3 pp. 787-798
ISSN:
0001-2351
Subject:
ammonia; ammonium nitrogen; dissociation; emissions; equations; linear models; pH; prediction; swine; temperature; wind speed; North Carolina
Abstract:
... A mathematical model to estimate ammonia emission from anaerobic swine lagoons was developed based on the classical two-film theory. Inputs to the model are wind speed and lagoon liquid properties such as total ammonia nitrogen (TAN) concentration, pH, and temperature. Predicted emission rates of ammonia increase when any of these parameters are increased, but the relationship is linear only with ...
DOI:
10.13031/2013.8859

14. WATGIS: A GIS-Based Lumped Parameter Water Quality Model

Author:
Fernandez, G.P.; Chescheir, G.M.; Skaggs, R.W.; Amatya, D.M.
Source:
Transactions of the ASAE 2002 v.45 no.3 pp. 593-600
ISSN:
0001-2351
Subject:
coastal plains; correlation; drainage; drainage channels; exports; forested watersheds; geographic information systems; hydrologic models; nitrate nitrogen; nitrogen; prediction; screening; travel; uncertainty analysis; water management; water quality; North Carolina
Abstract:
... A Geographic Information System (GIS)-based, lumped parameter water quality model was developed to estimate the spatial and temporal nitrogen-loading patterns for lower coastal plain watersheds in eastern North Carolina. The model uses a spatially distributed delivery ratio (DR) parameter to account for nitrogen retention or loss along a drainage network. Delivery ratios are calculated from time o ...
DOI:
10.13031/2013.8822

15. 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

16. Effect of Parameter Uncertainty on DRAINMOD Predictions: I. Hydrology and Yield

Author:
Haan, P.K.; Skaggs, R.W.
Source:
Transactions of the ASAE 2003 v.46 no.4 pp. 1061-1067
ISSN:
0001-2351
Subject:
DRAINMOD model; Monte Carlo method; crop yield; field experimentation; growing season; model uncertainty; parameter uncertainty; prediction; saturated hydraulic conductivity; soil water; subsurface drainage; uncertainty analysis; variance; North Carolina
Abstract:
... The computer-based hydrologic model DRAINMOD can be used to predict the effect of drainage design on the rate of subsurface drainage and on crop yield. An uncertainty analysis was conducted to quantitatively assess the variability in model outputs caused by parameter uncertainty. The analysis was based on an experimental field at the Tidewater Research Station in Plymouth, North Carolina. As a fir ...
DOI:
10.13031/2013.13968

17. Effects of Subsurface Drain Depth on Nitrogen Losses from Drained Lands

Author:
R. W. Skaggs; G. M. III Chescheir
Source:
Transactions of the ASAE 2003 v.46 no.2 pp. 237-244
ISSN:
0001-2351
Subject:
crop yield; drainage water; economic analysis; nitrogen; profits and margins; sandy loam soils; North Carolina
Abstract:
... A simulation study was conducted to determine effects of drain depth on nitrogen (N) loss in drainage water. Simulations were conducted for drain depths of 0.75, 1.0, 1.25, and 1.5 m for a Portsmouth sandy loam at Plymouth, North Carolina. A wide range of drain spacing was considered for each depth. Corn yields were predicted and an economic analysis was conducted to determine the drain spacing gi ...
DOI:
10.13031/2013.12974

18. Copper and zinc accumulation, profile distribution, and crop removal in Coastal Plain soils receiving long-term, intensive applications of swine manure

Author:
Novak, J.M.; Watts, D.W.; Stone, K.C.
Source:
Transactions of the ASAE 2004 v.47 no.5 pp. 1513-1522
ISSN:
0001-2351
Subject:
pig manure; manure spreading; long term experiments; effluents; soil pollution; copper; zinc; soil profiles; nutrient uptake; Cynodon dactylon; nutrient availability; soil fertility; topsoil; leaching; coastal plain soils; North Carolina
Abstract:
... Trace metals like copper (Cu) and zinc (Zn) are added to animal feed as dietary supplements, and trace metals not assimilated by the animals gut are excreted in manure. The accumulation and movement of Cu and Zn in soils has not been as well documented when compared to nitrogen (N) and phosphorus (P). In cases where plant-available Cu and Zn concentrations accumulate to phytotoxic levels, yield ma ...
Handle:
10113/9718

19. DRAINWAT-based methods for estimating nitrogen transport in poorly drained watersheds

Author:
Amatya, D.M.; Chescheir, G.M.; Fernandez, G.P.; Skaggs, R.W.; Gilliam, J.W.
Source:
Transactions of the ASAE 2004 v.47 no.3 pp. 677-687
ISSN:
0001-2351
Subject:
water pollution; simulation models; nitrogen; forested watersheds; streams; losses from soil; watershed hydrology; poorly drained soils; forest soils; hydrologic models; hydrochemistry; soil water movement; North Carolina
Abstract:
... Methods are needed to quantify effects of land use and management practices on nutrient and sediment loads at the watershed scale. Two methods were used to apply a DRAINMOD-based watershed-scale model (DRAINWAT) to estimate total nitrogen (N) transport from a poorly drained, forested watershed. In both methods, in-stream retention or losses of N were calculated with a lumped-parameter model, which ...

20. Development and testing of watershed-scale models for poorly drained soils

Author:
Fernandez, G.P.; Chescheir, G.M.; Skaggs, R.W.; Amatya, D.M.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 639-652
ISSN:
0001-2351
Subject:
water pollution; simulation models; water quality; forested watersheds; nitrate nitrogen; streams; coastal plain soils; poorly drained soils; pollution load; subsurface drainage; hydrologic models; North Carolina
Abstract:
... Two watershed-scale hydrology and water quality models were used to evaluate the cumulative impacts of land use and management practices on downstream hydrology and nitrogen loading of poorly drained watersheds. Field-scale hydrology and nutrient dynamics are predicted by DRAINMOD in both models. In the first model (DRAINMOD-DUFLOW), field-scale predictions are coupled to the canal/stream routing ...
Handle:
10113/37520