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You searched for: Journal Journal of environmental quality Remove constraint Journal: Journal of environmental quality Publication year rev 7986-2014 Remove constraint Publication year rev: 7986-2014 Source 2014 v.43 no.4 Remove constraint Source: 2014 v.43 no.4
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1. A Watershed Modeling Framework for Phosphorus Loading from Residential and Agricultural Sources

Author:
Andrew Sinclair; Rob Jamieson; Ali Madani; Robert J. Gordon; William Hart; Dale Hebb
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1356-1369
ISSN:
0047-2425
Subject:
Soil and Water Assessment Tool model; agricultural land; agricultural watersheds; base flow; land use; phosphorus; pollution load; residential housing; soil; sorption; subwatersheds; surface water; total phosphorus; wastewater; Nova Scotia
Abstract:
... Phosphorus (P) loading from residential onsite wastewater systems (OWSs) into neighboring surface waters is a poorly understood process in rural watersheds; this can be further challenged when rural residential dwellings are intermixed with agricultural land use. The objectives of this research were (i) to design a P onsite wastewater simulator (POWSIM) to assess P loads from individual or cluster ...
DOI:
10.2134/jeq2013.09.0368

2. Addition of Straw or Sawdust to Mitigate Greenhouse Gas Emissions from Slurry Produced by Housed Cattle: A Field Incubation Study

Author:
Tony J. van der Weerden; Jiafa Luo; Moira Dexter
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1345-1355
ISSN:
0047-2425
Subject:
ammonia; barns; carbon; carbon nitrogen ratio; dairy cattle; farming systems; greenhouse gas emissions; greenhouse gases; methane; nitrogen; nitrous oxide; pastures; sawdust; slurries; storage time; straw; winter; New Zealand
Abstract:
... The use of housed wintering systems (e.g., barns) associated with dairy cattle farming is increasing in southern New Zealand. Typically, these wintering systems use straw or a woodmix as bedding material. Ammonia (NH₃) and greenhouse gas (GHG) emissions (nitrous oxide [N₂O] and methane [CH₄]) associated with storage of slurry + bedding material from wintering systems is poorly understood. A field ...
DOI:
10.2134/jeq2013.11.0452

3. Ammonia Emission Model for Whole Farm Evaluation of Dairy Production Systems

Author:
C. Alan Rotz; Felipe Montes; Sasha D. Hafner; Albert J. Heber; Richard H. Grant
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1143-1158
ISSN:
0047-2425
Subject:
ammonia; application methods; barns; climate; dairy farming; dry matter content; farm profitability; farming systems; farms; feeding level; free stalls; grazing; greenhouse gas emissions; leaching; manure storage; mass transfer; milk production; nitrates; pastures; production costs; production technology; simulation models; Northern European region; Pennsylvania
Abstract:
... Ammonia (NH₃) emissions vary considerably among farms as influenced by climate and management. Because emission measurement is difficult and expensive, process-based models provide an alternative for estimating whole farm emissions. A model that simulates the processes of NH₃ formation, speciation, aqueous-gas partitioning, and mass transfer was developed and incorporated in a whole farm simulatio ...
DOI:
10.2134/jeq2013.04.0121
CHORUS:
10.2134/jeq2013.04.0121

4. Ammonia and Nitrous Oxide Emissions from a Commercial Broiler House

Author:
D. M. Miles; P. A. Moore; R. T. Burns; J. P. Brooks
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1119-1124
ISSN:
0047-2425
Subject:
Pinus; air flow; ammonia; carbon dioxide; flocks; greenhouse gas emissions; greenhouse gases; nitrous oxide; poultry housing; poultry manure; wood shavings; Mississippi
Abstract:
... Complex variation in gas emissions from animal facilities has been shown in recent research reports. Uncertainties in these emission estimates are driving research activities concerning different animal species across the globe. Greenhouse gas (N₂O and CO₂) and NH₃ concentrations were measured in a modern, tunnel-ventilated, commercial broiler house in Mississippi during five flocks (spanning appr ...
Handle:
10113/59507
DOI:
10.2134/jeq2013.09.0390

5. Antecedent Moisture Controls on Stream Nitrate Flux in an Agricultural Watershed

Author:
Caroline A. Davis; Adam S. Ward; Amy J. Burgin; Terrance D. Loecke; Diego A. Riveros-Iregui; Douglas J. Schnoebelen; Craig L. Just; Steven A. Thomas; Larry J. Weber; Martin A. St. Clair
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1494-1503
ISSN:
0047-2425
Subject:
agricultural land; agricultural watersheds; antecedent moisture; base flow; drought; groundwater; nitrate nitrogen; nitrates; rain; streams
Abstract:
... Evaluating nitrate-N fluxes from agricultural landscapes is inherently complex due to the wide range of intrinsic and dynamic controlling variables. In this study, we investigate the influence of contrasting antecedent moisture conditions on nitrate-N flux magnitude and dynamics in a single agricultural watershed on intra-annual and rainfall-event temporal scales. High temporal resolution discharg ...
DOI:
10.2134/jeq2013.11.0438

6. Atrazine Soil Core Residue Analysis from an Agricultural Field 21 Years after Its Ban

Author:
David Vonberg; Diana Hofmann; Jan Vanderborght; Anna Lelickens; Stephan Köppchen; Thomas Pütz; Peter Burauel; Harry Vereecken
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1450-1459
ISSN:
0047-2425
Subject:
agricultural land; aquifers; atrazine; groundwater; half life; herbicide residues; liquid chromatography; metabolites; mixing; monitoring; soil profiles; solvents; subsoil; tandem mass spectrometry; topsoil; water table; Germany
Abstract:
... Atrazine (2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine) groundwater monitoring in the Zwischenscholle aquifer in western Germany revealed concentrations exceeding the threshold value of 0.1 μg L⁻¹ and increasing concentration trends even 20 yr after its ban. Accordingly, the hypothesis was raised that a continued release of bound atrazine residues from the soil into the Zwischenscholle aq ...
DOI:
10.2134/jeq2013.12.0497

7. Bayesian Network for Point and Diffuse Source Phosphorus Transfer from Dairy Pastures in South Otago, New Zealand

Author:
Gina M. Lucci; David Nash; Richard W. McDowell; Leo M. Condron
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1370-1380
ISSN:
0047-2425
Subject:
Bayesian theory; dairy farming; drainage; farming systems; farms; irrigation; models; overland flow; pastures; phosphorus; rain; subsurface flow; total phosphorus; New Zealand
Abstract:
... Many factors affect the magnitude of nutrient losses from dairy farm systems. Bayesian Networks (BNs) are an alternative to conventional modeling that can evaluate complex multifactor problems using forward and backward reasoning. A BN of annual total phosphorus (TP) exports was developed for a hypothetical dairy farm in the south Otago region of New Zealand and was used to investigate and integra ...
DOI:
10.2134/jeq2013.11.0460

8. Climate Change and Land Use Drivers of Fecal Bacteria in Tropical Hawaiian Rivers

Author:
Ayron M. Strauch; Richard A. Mackenzie; Gregory L. Bruland; Ralph Tingley; Christian P. Giardina
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1475-1483
ISSN:
0047-2425
Subject:
Enterococcus; Escherichia coli; climate change; coliform bacteria; fecal bacteria; flooded conditions; forests; indicator species; land cover; land use change; microbial growth; models; pastures; rain; rain intensity; runoff; soil water; storms; stream flow; streams; tropics; urbanization; water potential; water quality; watersheds; Hawaii
Abstract:
... Potential shifts in rainfall driven by climate change are anticipated to affect watershed processes (e.g., soil moisture, runoff, stream flow), yet few model systems exist in the tropics to test hypotheses about how these processes may respond to these shifts. We used a sequence of nine watersheds on Hawaii Island spanning 3000 mm (7500–4500 mm) of mean annual rainfall (MAR) to investigate the eff ...
DOI:
10.2134/jeq2014.01.0025

9. Climate Change and Observed Climate Trends in the Fort Cobb Experimental Watershed

Author:
J. D. Garbrecht; X. C. Zhang; J. L. Steiner
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1319-1327
ISSN:
0047-2425
Subject:
air temperature; atmospheric precipitation; climate; climate change; drought; grazing systems; greenhouse gases; landscapes; models; pastures; risk; uncertainty; water resources; watersheds; Great Plains region; Oklahoma
Abstract:
... Recurring droughts in the Southern Great Plains of the United States are stressing the landscape, increasing uncertainty and risk in agricultural production, and impeding optimal agronomic management of crop, pasture, and grazing systems. The distinct possibility that the severity of recent droughts may be related to a greenhouse-gas induced climate change introduces new challenges for water resou ...
DOI:
10.2134/jeq2013.07.0286

10. Dry Mature Fine Tailings as Oil Sands Reclamation Substrates for Three Native Grasses

Author:
Gabriela L. Luna Wolter; M. Anne Naeth
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1510-1516
ISSN:
0047-2425
Subject:
Agrostis hyemalis var. scabra; Elymus trachycaulus; Festuca saximontana; aboveground biomass; belowground biomass; byproducts; chlorides; fertilizers; forest litter; greenhouse experimentation; greenhouses; hydrocarbons; indigenous species; ions; land restoration; mine tailings; mineral soils; mining; oil sands; peat; peat soils; physical properties; plant growth; sodium; sulfates; vegetation
Abstract:
... Mature fine tailings (MFT) are a by-product of oil sands mining that must be reclaimed through capping or use as a reclamation substrate. Some chemical and physical properties of MFT make it inhospitable for plant growth, such as high concentrations of sodium, sulfate, chloride, and hydrocarbons. A greenhouse study assessed whether substrates of various mixes of dry MFT, overburden sand, and peat ...
DOI:
10.2134/jeq2013.10.0415

11. Emission of Volatile Organic Compounds after Land Application of Cattle Manure

Author:
Bryan L. Woodbury; John E. Gilley; David B. Parker; David B. Marx; Daniel N. Miller; Roger A. Eigenberg
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1207-1218
ISSN:
0047-2425
Subject:
aromatic compounds; beef cattle; butyric acid; cattle manure; crop production; diet; discing; distillers grains; emissions; feedlots; feedstocks; land application; manure spreading; no-tillage; nutrients; odors; soil water; soil water content; sulfur; volatile fatty acids; volatile organic compounds
Abstract:
... Beef cattle manure can serve as a valuable source of nutrients for crop production. However, emissions of volatile organic compounds (VOCs) after land application may pose an odor nuisance to downwind populations. This study was conducted to evaluate the effects of land application method, diet, soil moisture content, and time since manure application on VOC emissions. Manure was collected from fe ...
DOI:
10.2134/jeq2013.05.0185

12. Emissions of Greenhouse Gases, Ammonia, and Hydrogen Sulfide from Pigs Fed Standard Diets and Diets Supplemented with Dried Distillers Grains with Solubles

Author:
Steven Trabue; Brian Kerr
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1176-1186
ISSN:
0047-2425
Subject:
ammonia; ammonium nitrogen; body weight; corn meal; dietary supplements; distillers grains; dry matter content; environmental impact; greenhouse gas emissions; hydrogen sulfide; methane; nitrous oxide; nutritional intervention; pH; soybean meal; swine; swine feeding
Abstract:
... Swine producers are supplementing animal diets with increased levels of dried distillers grains with solubles (DDGS) to offset the cost of a standard corn–soybean meal (CSBM) diet. However, the environmental impact of these diets on emissions of greenhouse gases, ammonia (NH₃), and hydrogen sulfide (H₂S) is largely unknown. Twenty-four pigs (103.6 kg initial body weight) were fed a standard CSBM d ...
DOI:
10.2134/jeq2013.05.0207

13. Evaluation of Long-Term (1960–2010) Groundwater Fluoride Contamination in Texas

Author:
Sriroop Chaudhuri; Srinivasulu Ale
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1404-1416
ISSN:
0047-2425
Subject:
United States Environmental Protection Agency; World Health Organization; anions; bicarbonates; chlorides; drinking water; fluorides; groundwater; irrigation; maximum contaminant level; mixing; sulfates; sustainable development; water management; water quality; Texas
Abstract:
... Groundwater quality degradation is a major threat to sustainable development in Texas. The aim of this study was to elucidate spatiotemporal patterns of groundwater fluoride (F⁻) contamination in different water use classes in 16 groundwater management areas in Texas between 1960 and 2010. Groundwater F⁻ concentration data were obtained from the Texas Water Development Board and aggregated over a ...
DOI:
10.2134/jeq2013.04.0133

14. Evaluation of a Stepwise, Multiobjective, Multivariable Parameter Optimization Method for the APEX Model

Author:
G.M.M.M. Anomaa Senaviratne; Ranjith P. Udawatta; Claire Baffaut; Stephen H. Anderson
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1381-1391
ISSN:
0047-2425
Subject:
bioactive properties; cost effectiveness; environmental assessment; environmental policy; hydrologic models; model validation; nonpoint source pollution; nutrients; rowcrops; runoff; sediment transport; sediments; soil; system optimization; total nitrogen; total phosphorus; uncertainty; watersheds; Missouri
Abstract:
... Hydrologic models are essential tools for environmental assessment of agricultural nonpoint-source pollution. The automatic calibration of hydrologic models, though efficient, demands significant computational power, limiting their application. The study objective was to develop and evaluate a stepwise, multiobjective, multivariable automatic calibration method for the Agricultural Environmental P ...
DOI:
10.2134/jeq2013.12.0509

15. Factors Affecting Arsenic and Copper Runoff from Fields Fertilized with Poultry Litter

Author:
P. B. DeLaune; P. A. Moore
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1417-1423
ISSN:
0047-2425
Subject:
alum; aluminum sulfate; ammonia; application rate; arsenic; best management practices; birds; copper; corn; cost effectiveness; diet; emissions; fertilizer application; fertilizers; heavy metals; pastures; phosphorus; phytases; poultry manure; rainfall simulation; runoff; storage conditions; triple superphosphate
Abstract:
... Arsenic (As) and copper (Cu) runoff from fields fertilized with poultry litter has received increasing attention in recent years, although it is not known if heavy metal runoff from poultry litter poses a significant threat to the environment. The objective of this study was to determine the main factors affecting As and Cu concentrations in runoff water from pastures receiving poultry litter appl ...
DOI:
10.2134/jeq2013.12.0495

16. High Ozone Increases Soil Perchlorate but Does Not Affect Foliar Perchlorate Content

Author:
D. A. Grantz; A. Jackson; H.-B. Vu; K. O. Burkey; M. T. McGrath; G. Harvey
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1460-1466
ISSN:
0047-2425
Subject:
chlorides; cities; groundwater; humans; hydrophilicity; ozone; perchlorates; plant tissues; redox reactions; rural areas; soil; stratosphere; troposphere; vegetation; United States
Abstract:
... Ozone (O₃) is implicated in the natural source inventory of ClO₄⁻, a hydrophilic salt that migrates to groundwater and interferes with the uptake of iodide in mammals, including humans. Tropospheric O₃ is elevated in many urban and some rural areas in the United States and globally. We previously showed that controlled O₃ exposure at near-ambient concentrations (up to 114 nL L⁻¹, 12-h mean) did no ...
DOI:
10.2134/jeq2013.11.0464

17. Livestock GRACEnet: A Workgroup Dedicated to Evaluating and Mitigating Emissions from Livestock Production

Author:
April B. Leytem; Robert S. Dungan
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1101-1110
ISSN:
0047-2425
Subject:
Long-Term Agroecosystem Research Network; air quality; ammonia; animal housing; anthropogenic activities; databases; emissions factor; farms; feeding methods; greenhouse gases; land application; livestock; livestock production; manure spreading; particulate emissions; pollutants; production technology
Abstract:
... Ammonia, greenhouse gases, and particulate emissions from livestock operations can potentially affect air quality at local, regional, and even global scales. These pollutants, many of which are generated through various anthropogenic activities, are being increasingly scrutinized by regulatory authorities. Regulation of emissions from livestock production systems will ultimately increase on farm c ...
DOI:
10.2134/jeq2014.06.0264

18. Long-Term Environmental Research: The Upper Washita River Experimental Watersheds, Oklahoma, USA

Author:
Jean L. Steiner; Patrick J. Starks; Jurgen D. Garbrecht; Daniel N. Moriasi; Xunchang Zhang; Jeanne M. Schneider; Jorge A. Guzman; Edward Osei
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1227-1238
ISSN:
0047-2425
Subject:
Agricultural Research Service; climate; data collection; decision making; farms; humans; hydrology; infrastructure; issues and policy; land cover; landscapes; markets; risk; rivers; scientists; sediments; water quality; watersheds; weather; Oklahoma
Abstract:
... Water is central to life and earth processes, connecting physical, biological, chemical, ecological, and economic forces across the landscape. The vast scope of hydrologic sciences requires research efforts worldwide and across a wide range of disciplines. While hydrologic processes and scientific investigations related to sustainable agricultural systems are based on universal principles, researc ...
Handle:
10113/60564
DOI:
10.2134/jeq2014.05.0229

19. Long-Term Impact of Tillage Practices and Phosphorus Fertilization on Soil Phosphorus Forms as Determined by 31P Nuclear Magnetic Resonance Spectroscopy

Author:
Dalel Abdi; Barbara J. Cade-Menun; Noura Ziadi; Léon-Étienne Parent
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1431-1441
ISSN:
0047-2425
Subject:
Mehlich-3 phosphorus; aluminum; bioavailability; crop rotation; drainage; esters; fertilizer application; inorganic phosphorus; magnesium; no-tillage; nuclear magnetic resonance spectroscopy; nucleotides; orthophosphates; pH; phosphorus fertilizers; plowing; runoff; soil erosion; soil organic matter; soil profiles; soil sampling; soil treatment; stable isotopes; total nitrogen; total phosphorus; water conservation; Quebec
Abstract:
... Conservation tillage practices have become increasingly common in recent years to reduce soil erosion, improve water conservation, and increase soil organic matter. Research suggests that conservation tillage can stratify soil test phosphorus (P), but little is known about the effects on soil organic P. This study was conducted to assess the long-term effects of tillage practices (no-till [NT] and ...
DOI:
10.2134/jeq2013.10.0424

20. Macroscopic Assessment of Nanosilver Toxicity to Soil Denitrification Kinetics

Author:
Allison Rick VandeVoort; Horace Skipper; Yuji Arai
Source:
Journal of environmental quality 2014 v.43 no.4 pp. 1424-1430
ISSN:
0047-2425
Subject:
coatings; denitrification; dispersibility; ecosystems; environmental health; nanosilver; polyvinylpyrrolidone; risk assessment; sedimentation rate; sediments; silver; soil; solubility; toxicity
Abstract:
... A large increase in commercial and home use of silver nanoparticle (AgNP) products and technologies has raised concerns about their impact on environmental health. While several sources cite soils and sediments as the predominant sink for AgNPs in natural environments, few studies contribute to risk assessment of AgNPs in terrestrial environments. In this study, the effect of AgNPs ([Ag]ₜₒₜₐₗ: 1–1 ...
DOI:
10.2134/jeq2013.12.0524