abstract：:Two separate laboratory experiment series, surface runoff and steady-state seepage, were performed to determine if dust suppressant products can be applied to soils with an expected minimal to no negative impact on water quality. The experiments were designed to mimic arid field conditions and used two soils (clayey a...

journal_title：Journal of environmental quality

authors： Beighley RE,He Y,Valdes JR

更新日期：2009-02-06 00:00:00

abstract：:Conventional wisdom postulates that leaching losses of N from agriculture systems are dominated by NO(3)(-). Although the export of dissolved organic nitrogen (DON) into the groundwater has been recognized for more than 100 yr, it is often ignored when total N budgets are constructed. Leaching of DON into stream and d...

journal_title：Journal of environmental quality

authors： van Kessel C,Clough T,van Groenigen JW

更新日期：2009-02-06 00:00:00

abstract：:Excessive or N-based application of poultry manure for crops may result in significant risk of P loss with surface runoff. This study assessed P loss immediately after poultry manure application to soybean [Glycine max (L.) Merr.] residue with and without tillage at eight Iowa fields. Manure from chickens (Gallus gall...

journal_title：Journal of environmental quality

authors： Kaiser DE,Mallarino AP,Haq MU,Allen BL

更新日期：2009-01-13 00:00:00

abstract：:Conversions of Mollisols from prairie to cropland and subsequent changes in crop production practices in the Midwestern USA have resulted in changes in soil organic matter. Few studies have used archived samples, long-term resampling of soils to a depth of 1 m, and space for time studies to document these changes. We ...

journal_title：Journal of environmental quality

authors： David MB,McIsaac GF,Darmody RG,Omonode RA

更新日期：2009-01-13 00:00:00

abstract：:Lake Allatoona is a large reservoir north of Atlanta, GA, that drains an area of about 2870 km2 scheduled for a phosphorus (P) total maximum daily load (TMDL). The Soil and Water Assessment Tool (SWAT) model has been widely used for watershed-scale modeling of P, but there is little guidance on how to estimate P-relat...

journal_title：Journal of environmental quality

authors： Radcliffe DE,Lin Z,Risse LM,Romeis JJ,Jackson CR

更新日期：2009-01-13 00:00:00

abstract：:Decay rates are central parameters in modeling pesticide fate and transport in the environment. Pesticide decay is usually modeled as a first-order process, and variations in half-life can have significant impacts on model predictions. Decay rates for the foliage and thatch components of turf are scarce, and most simu...

journal_title：Journal of environmental quality

authors： Magri A,Haith DA

更新日期：2009-01-13 00:00:00

abstract：:Microbial mineralization of urea and uric acid in poultry litter results in the production of ammonia, which can lead to decreased poultry performance, malodorous emissions, and loss of poultry litter value as a fertilizer. Despite the fact that this is a microbial process, little is known about how the microbial popu...

journal_title：Journal of environmental quality

authors： Cook KL,Rothrock MJ Jr,Warren JG,Sistani KR,Moore PA Jr

更新日期：2008-10-23 00:00:00

abstract：:Limited information is available on streams in the Adirondack region of New York, although streams are more prone to acidification than the more studied Adirondack lakes. A stream assessment was therefore undertaken in the Oswegatchie and Black River drainages; an area of 4585 km(2) in the western part of the Adironda...

journal_title：Journal of environmental quality

authors： Lawrence GB,Roy KM,Baldigo BP,Simonin HA,Capone SB,Sutherland JW,Nierzwicki-Bauer SA,Boylen CW

更新日期：2008-10-23 00:00:00

abstract：:Water quality in streams is dependent on landscape metrics at catchment and wetland scales. A study was undertaken to evaluate the correlation between landscape metrics, namely patch density and area, shape, heterogeneity, aggregation, connectivity, land-use ratio, and water quality variables (salinity, nutrients, sed...

journal_title：Journal of environmental quality

authors： Moreno-Mateos D,Mander U,Comín FA,Pedrocchi C,Uuemaa E

更新日期：2008-10-23 00:00:00

abstract：:Current phytotoxicity plant test protocols for US pesticide registration require testing for effects on seedling emergence and early growth without regard to other important factors, such as plant reproduction. Yield and quality reduction can have significant economic and ecological effects. Therefore, field trials we...

journal_title：Journal of environmental quality

authors： Pfleeger T,Olszyk D,Plocher M,Yilma S

更新日期：2008-10-23 00:00:00

abstract：:Pharmaceuticals used in animal feeding operations have been detected in various environmental settings. There is a growing concern about the impact on terrestrial and aquatic organisms and the development of antibiotic-resistant strains of microorganisms. Pharmaceutical use in milking cows is relatively limited compar...

journal_title：Journal of environmental quality

authors： Watanabe N,Harter TH,Bergamaschi BA

更新日期：2008-09-01 00:00:00

abstract：:Protection of ground water for present and future use requires monitoring and understanding of the mechanisms controlling long-term quality of ground water. In this study, spatial and temporal trends in concentrations of nitrate and pesticides in ground water in the eastern San Joaquin Valley, California, were evaluat...

journal_title：Journal of environmental quality

authors： Burow KR,Shelton JL,Dubrovsky NM

更新日期：2008-09-01 00:00:00

abstract：:Land application of co-produced waters from coalbed natural gas (CBNG) wells is one management option used in the Powder River Basin (PRB) of Wyoming and Montana. Unfortunately, the co-produced CBNG waters may be saline and/or sodic. The objective of this study was to examine the effects of irrigation with CBNG waters...

journal_title：Journal of environmental quality

authors： Vance GF,King LA,Ganjegunte GK

更新日期：2008-09-01 00:00:00

abstract：:The Langmuir model is commonly used for describing the sorption behavior of reactive solutes to surfaces and is often fit to sorption data using nonlinear least squares regression. An important assumption of least squares regression is that the predictor variable is error free. In the case of sorption data, this assum...

journal_title：Journal of environmental quality

authors： Bolster CH

更新日期：2008-08-08 00:00:00

abstract：:This study used manual full cross-sectional flow discrete sampling and suspended sediment concentration (SSC) methods to gravimetrically characterize noncolloidal hetero-disperse particulate matter (PM). This PM was examined as suspended, settleable, and sediment fractions to assess the distinct transport behavior of ...

journal_title：Journal of environmental quality

authors： Sansalone JJ,Kim JY

更新日期：2008-08-08 00:00:00

abstract：:Compared with open (treeless) pasture systems, silvopastoral agroforestry systems that integrate trees into pasture production systems are likely to enhance soil carbon (C) sequestration in deeper soil layers. To test this hypothesis, total soil C contents at six soil depths (0-5, 5-15, 15-30, 30-50, 50-75, and 75-125...

journal_title：Journal of environmental quality

authors： Haile SG,Nair PK,Nair VD

更新日期：2008-08-08 00:00:00

abstract：:Bioalkylation and colloid formation of selenium during selenate removal in upflow anaerobic sludge bed (UASB) bioreactors was investigated. The mesophilic (30 degrees C) UASB reactor (pH = 7.0) was operated for 175 d with lactate as electron donor at an organic loading rate of 2 g COD L(-1) d(-1) and a selenium loadin...

journal_title：Journal of environmental quality

authors： Lenz M,Smit M,Binder P,van Aelst AC,Lens PN

更新日期：2008-08-08 00:00:00

abstract：:This paper reports the use of a new technique, flow field-flow fractionation (FlFFF), for the characterization of soil sampled under grassland. FlFFF can be used to determine the fine colloidal material in the <1 microm fraction obtained by gravitational settling of 1% m/v soil suspensions. The aim of this work was to...

journal_title：Journal of environmental quality

authors： Gimbert LJ,Haygarth PM,Worsfold PJ

更新日期：2008-06-23 00:00:00

abstract：:Tile drained land with phosphorus (P)-rich topsoil is prone to P loss, which can impair surface water quality via eutrophication. We used by-products from steel and energy industries to mitigate P loss from tile drains. For each by-product, P sorption maximum (P(max)) and strength (k) were determined, while a fluvariu...

journal_title：Journal of environmental quality

authors： McDowell RW,Sharpley AN,Bourke W

更新日期：2008-06-23 00:00:00

abstract：:Most states in the USA have adopted P Indexing to guide P-based management of agricultural fields by identifying the relative risk of P loss at farm and watershed scales. To a large extent, this risk is based on hydrologic principles that frequently occurring storms can initiate surface runoff from fields. Once initia...

journal_title：Journal of environmental quality

authors： Sharpley AN,Kleinman PJ,Heathwaite AL,Gburek WJ,Weld JL,Folmar GJ

更新日期：2008-06-23 00:00:00

abstract：:It is generally recognized that soil N(2)O emissions can exhibit pronounced day-to-day variations; however, measurements of soil N(2)O flux with soil chambers typically are done only at discrete points in time. This study evaluated the impact of sampling frequency on the precision of cumulative N(2)O flux estimates ca...

journal_title：Journal of environmental quality

authors： Parkin TB

更新日期：2008-06-23 00:00:00

abstract：:Landscape representations based on land cover databases differ significantly from the real landscape. Using a land cover database with high uncertainty as input for emission inventory analyses can cause propagation of systematic and random errors. The objective of this study was to analyze how different land cover rep...

journal_title：Journal of environmental quality

authors： Nol L,Verburg PH,Heuvelink GB,Molenaar K

更新日期：2008-05-02 00:00:00

abstract：:Pesticide transport through the unsaturated zone is a function of chemical and soil characteristics, application, and water recharge rate. The fate and transport of 82 pesticides and degradates were investigated at five different agricultural sites. Atrazine and metolachlor, as well as several of the degradates of atr...

journal_title：Journal of environmental quality

authors： Hancock TC,Sandstrom MW,Vogel JR,Webb RM,Bayless ER,Barbash JE

更新日期：2008-05-02 00:00:00

abstract：:Enzyme catalyzed reactions are generally considered the rate-limiting step in organic matter degradation and may be significantly influenced by the structure and composition of plant communities. Changes in these rates have the potential to effect long-term peat accumulation and influence the topography of a wetland e...

journal_title：Journal of environmental quality

authors： Penton CR,Newman S

更新日期：2008-05-02 00:00:00

abstract：:Quantification of soil carbon (C) cycling as influenced by management practices is needed for C sequestration and soil quality improvement. We evaluated the 10-yr effects of tillage, cropping system, and N source on crop residue and soil C fractions at 0- to 20-cm depth in Decatur silt loam (clayey, kaolinitic, thermi...

journal_title：Journal of environmental quality

authors： Sainju UM,Senwo ZN,Nyakatawa EZ,Tazisong IA,Reddy KC

更新日期：2008-05-02 00:00:00

abstract：:Manure application supplies plant nutrients, but also leads to trace element accumulation in soil. This study investigated total and EDTA-extractable B, Cd, Co, Cu and Zn in soil after 25 annual manure applications. The residual effect of 14 annual manure applications followed by 11 yr with no applications was also in...

journal_title：Journal of environmental quality

authors： Benke MB,Indraratne SP,Hao X,Chang C,Goh TB

更新日期：2008-05-02 00:00:00

abstract：:Pasture management and broiler litter application rate are critical factors influencing the magnitude of nutrients being transported by runoff from fields. We investigated the impact of pasture management and broiler litter application rate on nutrient runoff from bermudagrass (Cynodon dactylon) pastures. The experime...

journal_title：Journal of environmental quality

authors： Sistani KR,Brink GE,Oldham JL

更新日期：2008-03-01 00:00:00

abstract：:A lignocellulosic substrate (LS) obtained from our local agroindustry was used as a low-cost and effective adsorbent for the removal of pesticides from wastewaters. The studied pesticides were terbumeton (N-(1,1-dimethyl)-Nethyl-6-methoxy-1,3,5-triazine-2,4-diamine), desethyl terbumeton (N-(1,1-dimethylethyl)-6-methox...

journal_title：Journal of environmental quality

authors： Boudesocque S,Guillon E,Aplincourt M,Martel F,Noël S

更新日期：2008-03-01 00:00:00

abstract：:The frequency and intensities of dust exposures in and near farm fields, which potentially contribute to high intensity human exposure events, are undocumented due to the transient nature of local dust plumes and the difficulties of making accurate concentration measurements. The objective of this study is to measure ...

journal_title：Journal of environmental quality

authors： Hiscox AL,Miller DR,Holmén BA,Yang W,Wang J

更新日期：2008-03-01 00:00:00

abstract：:Poultry litter treatment with alum (Al(2)(SO(4))(3) . 18H(2)O) lowers litter phosphorus (P) solubility and therefore can lower litter P release to runoff after land application. Lower P solubility in litter is generally attributed to aluminum-phosphate complex formation. However, recent studies suggest that alum addit...

journal_title：Journal of environmental quality

authors： Warren JG,Penn CJ,McGrath JM,Sistani K

更新日期：2008-02-11 00:00:00

abstract：:Aqueous degradation rates, which include hydrolysis and epimerization, for chlortetracycline (CTC), oxytetracycline (OTC), tetracycline (TET), lincomycin (LNC), sulfachlorpyridazine (SCP), sulfadimethoxine (SDM), sulfathiazole (STZ), trimethoprim (TRM), and tylosin A (TYL) were studied as a function of ionic strength ...

journal_title：Journal of environmental quality

authors： Loftin KA,Adams CD,Meyer MT,Surampalli R

更新日期：2008-02-11 00:00:00

abstract：:Is nitrate harmful to humans? Are the current limits for nitrate concentration in drinking water justified by science? There is substantial disagreement among scientists over the interpretation of evidence on the issue. There are two main health issues: the linkage between nitrate and (i) infant methaemoglobinaemia, a...

journal_title：Journal of environmental quality

authors： Powlson DS,Addiscott TM,Benjamin N,Cassman KG,de Kok TM,van Grinsven H,L'Hirondel JL,Avery AA,van Kessel C

更新日期：2008-02-11 00:00:00

abstract：:A microplate method was developed as a tool to test phages for their ability to control Salmonella in aqueous environments. The method used EPA (U.S. Environmental Protection Agency) worst case water (WCW) in 96-well plates. The WCW provided a consistent and relatively simple defined turbid aqueous matrix, high in tot...

journal_title：Journal of environmental quality

authors： McLaughlin MR,Brooks JP

更新日期：2008-01-04 00:00:00

abstract：:The effectiveness of various management practices to reduce phosphorus (P) loss from soil to water can potentially be improved by using by-product materials that have the capacity to sorb phosphorus. This study evaluated the P sorption and desorption potential, and the physicochemical characteristics of various phosph...

journal_title：Journal of environmental quality

authors： Leader JW,Dunne EJ,Reddy KR

更新日期：2008-01-04 00:00:00

abstract：:The Universal Soil Loss Equation (USLE) and its derivatives are widely used for identifying watersheds with a high potential for degrading stream water quality. We compared sediment yields estimated from regional application of the USLE, the automated revised RUSLE2, and five sediment delivery ratio algorithms to meas...

journal_title：Journal of environmental quality

authors： Boomer KB,Weller DE,Jordan TE

更新日期：2008-01-04 00:00:00

abstract：:Determining the survival of zoonotic pathogens in livestock manure and runoff is critical for understanding the environmental and public health risks associated with these wastes. The occurrence and persistence of the bacterial pathogens Escherichia coli O157:H7 and Campylobacter spp. in a passive beef cattle feedlot ...

journal_title：Journal of environmental quality

authors： Berry ED,Woodbury BL,Nienaber JA,Eigenberg RA,Thurston JA,Wells JE

更新日期：2007-10-24 00:00:00

abstract：:Carbon (C) and nitrogen (N) play an important role in the restoration of ecosystem functions of reclaimed mine soils (RMSs). Postreclamation land use in RMSs affects soil C and N pools and fluxes. We compared the effects of 28-yr-old postreclamation land uses (forest, hay, and pasture) on selected chemical properties ...

journal_title：Journal of environmental quality

authors： Shrestha RK,Lal R

更新日期：2007-10-24 00:00:00

abstract：:The purpose of this study was to determine the response of antibiotics and antibiotic resistance genes (ARG) to manure management. A pilot field study was conducted using horse manure containing no antibiotics, into which chlortetracycline (CTC), tylosin (TYL), and monensin (MON) were spiked and compared to unspiked c...

journal_title：Journal of environmental quality

authors： Storteboom HN,Kim SC,Doesken KC,Carlson KH,Davis JG,Pruden A

更新日期：2007-10-16 00:00:00

abstract：:Acidic (pH 4.1) and high Cd, Pb, and Zn mine tailings (mean +/- SD: 17 +/- 0.4, 3800 +/- 100, and 3500 +/- 100 mg kg(-1), respectively) from an alluvial tailings deposit in Leadville, Colorado were amended with municipal biosolids (BS) (224 Mg ha(-1)) and different types of lime (calcium carbonate equivalent of 224 Mg...

journal_title：Journal of environmental quality

authors： Svendson A,Henry C,Brown S

更新日期：2007-10-16 00:00:00

abstract：:A significant portion of the NO3 from agricultural fields that contaminates surface waters in the Midwest Corn Belt is transported to streams or rivers by subsurface drainage systems or "tiles." Previous research has shown that N fertilizer management alone is not sufficient for reducing NO3 concentrations in subsurfa...

journal_title：Journal of environmental quality

authors： Kaspar TC,Jaynes DB,Parkin TB,Moorman TB

更新日期：2007-08-31 00:00:00