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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 Text availability Full Text Remove constraint Text availability: Full Text
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1. 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

2. Hydrologic and water-quality response of forested and agricultural lands during the 1999 extreme weather conditions in eastern North Carolina

Author:
Shelby, J.D.; Chescheir, G.M.; Skaggs, R.W.; Amatya, D.M.
Source:
Transactions of the ASAE 2005 v.48 no.6 pp. 2179-2188
ISSN:
0001-2351
Subject:
sediment yield; stream flow; water quality; nitrogen; forested watersheds; floods; losses from soil; nonpoint source pollution; watershed hydrology; hurricanes; phosphorus; coastal plains; agricultural watersheds; North Carolina
Abstract:
... This study evaluated hydrologic and water-quality data collected on a coastal-plain research watershed during a series of hurricanes and tropical storms that hit coastal North Carolina in 1999, including hurricanes Dennis, Floyd, and Irene. During September and October 1999, the research watershed received approximately 555 mm of rainfall associated with hurricanes. This was the wettest such perio ...
Handle:
10113/5541

3. Sensitivity analyses of the nitrogen simulation model, DRAINMOD-N II

Author:
Wang, X.; Youssef, M.A.; Skaggs, R.W.; Atwood, J.D.; Frankenberger, J.R.
Source:
Transactions of the ASAE 2005 v.48 no.6 pp. 2205-2212
ISSN:
0001-2351
Subject:
simulation models; agricultural soils; nitrogen; nitrate nitrogen; model validation; losses from soil; agricultural management models; drainage; drainage water; sandy loam soils; North Carolina
Abstract:
... A two-step global sensitivity analysis was conducted for the nitrogen simulation model DRAINMOD-N II to assess the sensitivity of model predictions of NO3-N losses with drainage water to various model inputs. Factors screening using the LH-OAT (Latin hypercube sampling - one at a time) sensitivity analysis method was performed as a first step considering 48 model parameters; then a variance-based ...
Handle:
10113/5542

4. 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

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. 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

7. 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

8. 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

9. 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

10. 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

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. 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

13. 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

14. 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