Trace element concentrations in soil, corn leaves, and grain after cessation of biosolids applications.

abstract：:Based on limited data for the removal of radioactive (99)Tc by freshwater phytoplankton, it has been thought that phytoplankton are unsuitable for remediation of (99)Tc-contaminated waters. This work sought to verify the validity of this assumption by studying the removal of (99)TcO(4)(-) by freshwater and brackish wa...

journal_title：Journal of environmental quality

authors： Ishii N,Uchida S

更新日期：2006-10-27 00:00:00

abstract：:In many regions, conservation tillage has replaced conventional tilling practices to reduce soil erosion, improve water conservation, and increase soil organic matter. However, tillage can have marked effects on soil properties, specifically nutrient redistribution or stratification in the soil profile. The objective ...

journal_title：Journal of environmental quality

authors： Cade-Menun BJ,Carter MR,James DC,Liu CW

更新日期：2010-09-01 00:00:00

abstract：:Transitional ecotones such as vegetated buffer strips, stream banks, and streambeds retain phosphorus (P) in the immediate surroundings of farmland. Yet the fate of P in these ecotones remains unclear. Our objectives were to (i) test the difference in the P pool composition of soil and sediment between sites surrounde...

journal_title：Journal of environmental quality

authors： Neidhardt H,Achten F,Kern S,Schwientek M,Oelmann Y

更新日期：2019-09-01 00:00:00

abstract：:Batch sequential extraction techniques for fractionating metals or metalloids in soils are time consuming and subject to several potential errors. The development of a continuous-flow sequential extraction method for soil As is described and assessed, having the benefits of simplicity, rapidity, less risk of contamina...

journal_title：Journal of environmental quality

authors： Shiowatana J,McLaren RG,Chanmekha N,Samphao A

更新日期：2001-11-01 00:00:00

abstract：:Field-scale relationships between soil test phosphorus (STP) and flow-weighted mean concentrations (FWMCs) of dissolved reactive phosphorus (DRP) and total phosphorus (TP) in runoff are essential for modeling phosphorus losses, but are lacking. The objectives of this study were (i) to determine the relationships betwe...

journal_title：Journal of environmental quality

authors： Little JL,Nolan SC,Casson JP,Olson BM

更新日期：2007-07-17 00:00:00

abstract：:Excess NO leaching from the agricultural Midwest via tile drainage water has contributed to both local drinking water and national Gulf of Mexico benthic hypoxia concerns. Both in-field and edge-of-field practices have been designed to help mitigate NO flux to surface waters. Edge-of-field practices focus on maximizin...

journal_title：Journal of environmental quality

authors： Groh TA,Davis MP,Isenhart TM,Jaynes DB,Parkin TB

更新日期：2019-03-01 00:00:00

abstract：:Long-term water quality records for assessing natural variability, impact of management, and that guide regulatory processes to safeguard water resources are rare for California oak woodland rangelands. This study presents a 20-yr record (1981-2000) of nitrate-nitrogen (NO(3)-N) and suspended sediment export from a ty...

journal_title：Journal of environmental quality

authors： Lewis DJ,Singer MJ,Dahlgren RA,Tate KW

更新日期：2006-10-27 00:00:00

abstract：:The influence of different environmental factors on methane oxidation and degradation of hydrochlorofluorocarbons (HCFCs) was investigated in microcosms containing soil sampled at Skellingsted Landfill, Denmark. The soil showed a high capacity for methane oxidation resulting in a maximum oxidation rate of 104 microg C...

journal_title：Journal of environmental quality

authors： Scheutz C,Kjeldsen P

更新日期：2004-01-01 00:00:00

abstract：:High levels of fecal bacteria are a concern for recreational waters; however, the source of contamination is often unknown. This study investigated whether direct sequencing of a bacterial gene could be utilized for detecting genetic differences between bacterial strains for microbial source tracking. A 525-nucleotide...

journal_title：Journal of environmental quality

authors： Ram JL,Ritchie RP,Fang J,Gonzales FS,Selegean JP

更新日期：2004-05-01 00:00:00

abstract：:Sediment delivery from hillslopes to rivers is spatially variable and may lead to long-term delays between initial erosion and related sediment yield at the watershed outlet. Consideration of spatial variability is important for developing sound strategies for water quality improvement and soil protection at the water...

journal_title：Journal of environmental quality

authors： Bonumá NB,Rossi CG,Arnold JG,Reichert JM,Minella JP,Allen PM,Volk M

更新日期：2014-01-01 00:00:00

abstract：:Nitrogen (N) and phosphorus (P) loading from the Mississippi/Atchafalaya River Basin (MARB) has been linked to hypoxia in the Gulf of Mexico. To describe where and from what sources those loads originate, SPAtially Referenced Regression On Watershed attributes (SPARROW) models were constructed for the MARB using geosp...

journal_title：Journal of environmental quality

authors： Robertson DM,Saad DA

更新日期：2013-09-01 00:00:00

abstract：:Most farms have a centralized location to fill spray tanks with pesticides and to flush and clean application equipment. These sites, depending on the frequency of use, could be significant sources of surface and groundwater contamination. One approach to minimize this contamination is to install a treatment system, s...

journal_title：Journal of environmental quality

authors： Chu B,Eivazi F

更新日期：2018-03-01 00:00:00

abstract：:Herbicides may leach from agricultural fields into ground water feeding adjacent wetlands. However, only little is known of the fate of herbicides in wetland areas. The purpose of the study was to examine the potential of a riparian fen to mineralize herbides that could leach from an adjacent catchment area. Slurries ...

journal_title：Journal of environmental quality

authors： Larsen L,Jørgensen C,Aamand J

更新日期：2001-01-01 00:00:00

abstract：:Interest in the use of biochar from pyrolysis of biomass to sequester C and improve soil productivity has increased; however, variability in physical and chemical characteristics raises concerns about effects on soil processes. Of particular concern is the effect of biochar on soil N dynamics. The effect of biochar on...

journal_title：Journal of environmental quality

authors： Schomberg HH,Gaskin JW,Harris K,Das KC,Novak JM,Busscher WJ,Watts DW,Woodroof RH,Lima IM,Ahmedna M,Rehrah D,Xing B

更新日期：2012-07-01 00:00:00

abstract：:Maryland will impose restrictions on poultry litter application to soils with excessive P by the year 2005. Alternative uses for poultry litter are being considered, including burning as a fuel to generate electricity. The resulting ash contains high levels of total P, but the availability for crop uptake has not been...

journal_title：Journal of environmental quality

authors： Codling EE,Chaney RL,Sherwell J

更新日期：2002-05-01 00:00:00

abstract：:Water quality concerns and revised regulations are changing how confined animal feeding operations manage manure. Devising acceptable and feasible changes in manure practices requires a full understanding of the forces shaping current manure management decisions. Previous theoretical models have shown that a wide rang...

journal_title：Journal of environmental quality

authors： Lory JA,Massey RE,Zulovich JM,Hoehne JA,Schmidt AM,Carlson MS,Fulhage CD

更新日期：2004-05-01 00:00:00

abstract：:Transport of phosphorus (P) from agricultural fields to water bodies deteriorates water quality and causes eutrophication. To reduce P losses and optimize P use efficiency by crops, better knowledge is needed of P turnover in soil and the efficiency of best management practices (BMPs). In this review, we examined thes...

journal_title：Journal of environmental quality

authors： Bergström L,Kirchmann H,Djodjic F,Kyllmar K,Ulén B,Liu J,Andersson H,Aronsson H,Börjesson G,Kynkäänniemi P,Svanbäck A,Villa A

更新日期：2015-03-01 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：:The rapid economic and industrial growth of China, exemplified by a 10-fold increase in its gross domestic product in the past 15 years, has lifted millions of its citizens out of poverty but has simultaneously led to severe environmental problems. The World Health Organization estimates that approximately 2.4 million...

journal_title：Journal of environmental quality

authors： Zhang M,Xu J

更新日期：2011-11-01 00:00:00

abstract：:The state of Iowa requires developing total maximum daily loads (TMDLs) for over 400 water bodies that are listed on the 303(d) list of the impaired waters. The Raccoon River watershed, which covers approximately 9400 km2 of prime agriculture land and represents a typical Midwestern corn-belt region in west-central Io...

journal_title：Journal of environmental quality

authors： Manoj K,Wolter CF,Schilling KE,Gassman PW

更新日期：2010-07-01 00:00:00

abstract：:Placement strategies for P fertilizer can affect P availability to crops and influence the amounts and forms of P removed from soil in runoff, contributing to eutrophication. On the Canadian prairies, most runoff occurs during snowmelt. Two adjacent farm fields in Saskatchewan, Canada, were used to assess the effects ...

journal_title：Journal of environmental quality

authors： Wiens JT,Cade-Menun BJ,Weiseth B,Schoenau JJ

更新日期：2019-05-01 00:00:00

abstract：:Nitrogen sources in the Mississippi River basin have been linked to degradation of stream ecology and to Gulf of Mexico hypoxia. In 2013, the USGS and the USEPA characterized water quality stressors and ecological conditions in 100 wadeable streams across the midwestern United States. Wet conditions in 2013 followed a...

journal_title：Journal of environmental quality

authors： Van Metre PC,Frey JW,Musgrove M,Nakagaki N,Qi S,Mahler BJ,Wieczorek ME,Button DT

更新日期：2016-09-01 00:00:00

abstract：:The Abbotsford-Sumas Aquifer is a shallow, predominantly unconfined aquifer that spans regions in southwestern British Columbia, Canada and northwestern Washington, USA. The aquifer is prone to nitrate contamination because of extensive regional agricultural practices. A 22-month ground water nitrate assessment was pe...

journal_title：Journal of environmental quality

authors： Mitchell RJ,Babcock RS,Gelinas S,Nanus L,Stasney DE

更新日期：2003-05-01 00:00:00

abstract：:Phytoextraction has the potential to remove heavy metals from contaminated soil, and chelants can be used to improve the capabilities of phytoextraction. However, environmentally persistent chelants can cause metal leaching and groundwater pollution. A column experiment was conducted to evaluate the viability of biode...

journal_title：Journal of environmental quality

authors： Zhao S,Jia L,Duo L

更新日期：2016-05-01 00:00:00

abstract：:Closed chambers used to measure soil-atmosphere exchange of trace gases including nitrous oxide (N(2)O) and carbon dioxide (CO(2)) generate errors due to suppression of the gas concentration gradient at the soil-atmosphere interface. A method is described here for estimating the magnitude of flux underestimation arisi...

journal_title：Journal of environmental quality

authors： Venterea RT

更新日期：2009-12-30 00:00:00

abstract：:The Water Erosion Prediction Project (WEPP) model has been tested for its ability to predict soil erosion, runoff, and sediment delivery over a wide range of conditions and scales for both hillslopes and watersheds. Since its release in 1995, there has been considerable interest in adding a chemical transport element ...

journal_title：Journal of environmental quality

authors： Perez-Bidegain M,Helmers MJ,Cruse R

更新日期：2010-11-01 00:00:00

abstract：:Surface application of manure in reduced tillage systems generates nuisance odors, but their management is hindered by a lack of standardized field quantification methods. An investigation was undertaken to evaluate odor emissions associated with various technologies that incorporate manure with minimal soil disturban...

journal_title：Journal of environmental quality

authors： Brandt RC,Elliott HA,Adviento-Borbe MA,Wheeler EF,Kleinman PJ,Beegle DB

更新日期：2011-03-01 00:00:00

abstract：:Pesticides are responsible for nearly 1900 water quality impairments in the United States. Impacts of pesticide runoff on aquatic ecosystems can be mitigated by implementing management practices such as constructed wetlands, grass buffers, and vegetated ditches. A new practice currently being examined is the use of ri...

journal_title：Journal of environmental quality

authors： Moore MT,Locke MA,Cullum RF

更新日期：2018-11-01 00:00:00

abstract：:Polyacrylamide (PAM) is applied to 400000 irrigated hectares annually in the USA to control irrigation-induced erosion, yet the fate of dissolved PAM applied in irrigation water is not well documented. We determined the fate of PAM added to furrow streams under two treatments: Initial-10, 10 mg L(-1) PAM product appli...

journal_title：Journal of environmental quality

authors： Lentz RD,Sojka RE,Mackey BE

更新日期：2002-03-01 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