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 were prepared from sediment and ground water collected from different parts of a wetland representing different redox conditions. The slurries were amended with O2, NO3-, SO4(2-), and CO2, or CO2 alone as electron acceptors to simulate the in situ conditions and their ability to mineralize the herbides mecoprop, metsulfuron-methyl, isoproturon and atrazine. In addition, the abundance of bacteria able to utilize O2, NO3-, SO4(2-) + CO2, and CO2 as electron acceptors was investigated along with the O2-reducing and methanogenic potential of the sediment. The recalcitrance to bacterial degradation depended on both the type of herbicide and the redox conditions pertaining. Mecoprop was the most readily degraded herbicide, with 36% of [ring-U-14C]mecoprop being mineralized to 14CO2 under aerobic conditions after 473 d. In comparison, approximately 29% of [phenyl-U-14C]metsulfuron-methyl and 16% of [ring-U-14C]isoproturon mineralized in aerobic slurries during the same period. Surprisingly, 8 to 13% of mecoprop also mineralized under anaerobic conditions. Neither metsulfuron-methyl nor isoproturon were mineralized under anaerobic conditions and atrazine was not mineralized under any of the redox conditions examined. The present study is the first to report mineralization of meco-prop in ground water in a wetland area, and the first to report mineralization of a phenoxyalcanoic acid herbicide under both aerobic and anaerobic conditions.
journal_name
J Environ Qualjournal_title
Journal of environmental qualityauthors
Larsen L,Jørgensen C,Aamand Jdoi
10.2134/jeq2001.30124xsubject
Has Abstractpub_date
2001-01-01 00:00:00pages
24-30issue
1eissn
0047-2425issn
1537-2537journal_volume
30pub_type
杂志文章abstract：:Environmental regulations on greenhouse gas (GHG) emissions from corn (Zea mays L.)-ethanol production require accurate assessment methods to determine emissions savings from coproducts that are fed to livestock. We investigated current use of coproducts in livestock diets and estimated the magnitude and variability i...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2009.0283
更新日期：2010-02-19 00:00:00
abstract：:Water flow and P dynamics in a low-relief landscape manipulated by extensive canal and ditch drainage systems were modeled utilizing an ontology-based simulation model. In the model, soil water flux and processes between three soil inorganic P pools (labile, active, and stable) and organic P are represented as databas...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2009.0509
更新日期：2010-09-01 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
pub_type： 杂志文章
doi：10.2134/jeq2006.0042
更新日期：2006-10-27 00:00:00
abstract：:Drift from pesticide spray application can result in contamination of nontarget environments such as surface waters. Azinphos-methyl (AZI) and endosulfan (END) deposition in containers of water was studied in fruit orchards in the Western Cape, South Africa. Additionally, attention was given to the contamination in fa...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2001.303814x
更新日期：2001-05-01 00:00:00
abstract：:Hyperaccumulated Ni can defend plant tissues against herbivores and pathogens. The effectiveness of this defense, however, has not been tested with a viral pathogen. Turnip mosaic virus (TuMV) accumulation was studied in two serpentine species of Streptanthus with different Ni uptake abilities. Plants of a Ni hyperacc...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2001.30185x
更新日期：2001-01-01 00:00:00
abstract：:The purpose of this study was to determine the effect of PO on the sorption and transport of glyphosate [-(phosphonomethyl) glycine, GPS] in soils. The results of batch experiments indicated significant competition between PO and GPS in two different soils, with PO being preferentially sorbed. The 24-h Freundlich part...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2018.06.0252
更新日期：2019-01-01 00:00:00
abstract：:The objective of the Parafield Aquifer Storage Transfer and Recovery research project in South Australia is to determine whether stormwater from an urban catchment that is treated in a constructed wetland and stored in an initially brackish aquifer before recovery can meet potable water standards. The water produced b...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2010.0078
更新日期：2010-11-01 00:00:00
abstract：:On-site septic systems require appropriate soil characteristics to provide effective wastewater treatment. The objective of this study was to evaluate siting practices and treatment efficacy of on-site septic systems within the Cannonsville Reservoir watershed (115900 ha) in the state of New York. Using digital soil s...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2004.1989
更新日期：2004-11-01 00:00:00
abstract：:Biosolids can be a source of metals and metal nanoparticles. The objective of this study was to quantify and characterize the accumulation and transport of silver (Ag) in a natural soil that has received agronomically recommended rates of biosolids as fertilizer from 1994 to 2017. Total Ag concentrations were measured...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.1002/jeq2.20156
更新日期：2020-11-01 00:00:00
abstract：:Since its discovery in 1669, phosphorus (P) in the form of fertilizer has become an essential input for many agroecosystems. By introducing a concentrated P source, fertilizers increase short-term P export potential soon after their application and longer-term export potential by increasing soil fertility (legacy P). ...
journal_title：Journal of environmental quality
pub_type： 杂志文章,评审
doi：10.2134/jeq2019.02.0085
更新日期：2019-09-01 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
pub_type： 杂志文章
doi：10.2134/jeq2007.0061
更新日期：2008-09-01 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
pub_type： 杂志文章
doi：10.2134/jeq2009.0491
更新日期：2010-09-01 00:00:00
abstract：:In this study, we develop and apply a methodology to reduce an existing monitoring network to find an optimal configuration of a smaller network. We use a criterion based on locally weighted regression with two different weight functions. The methodology is applied to the Dutch national SO2 network and offers the poss...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2002.1210
更新日期：2002-01-01 00:00:00
abstract：:There are growing concerns regarding the fate of nutrients, especially phosphorus (P), from land application of animal waste. One approach being studied to reduce runoff losses of P is to treat manure or the soil receiving manure with chemical amendments such as gypsum. This study used rainfall simulations to examine ...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2012.0422
更新日期：2014-01-01 00:00:00
abstract：:The potential excessive nutrient and/or microbial loading from mismanaged land application of organic fertilizers is forcing changes in animal waste management. Currently, it is not clear to what extent different rates of poultry litter impact soil microbial communities, which control nutrient availability, organic ma...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2005.0470
更新日期：2006-07-06 00:00:00
abstract：:Livestock impacts on total suspended solids (TSS) and pathogen (e.g., ) levels in rangeland streams are a serious concern worldwide. Herded stream crossings by domestic sheep () are periodic, necessary managerial events on high-elevation rangelands, but their impacts on stream water quality are largely unknown. We eva...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2012.0005
更新日期：2012-09-01 00:00:00
abstract：:Pig (Sus scrofa domesticus) slurry (PS) is commonly applied as fertilizer to agricultural fields. Knowledge of PS nitrogen content is essential for good management, but PS nitrogen content is highly variable, not only between farms but also within a farm. Laboratory analysis of animal slurries is often expensive and i...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2011.0352
更新日期：2012-05-01 00:00:00
abstract：:Integrated buffer zones (IBZs) have recently been introduced in the Northwestern Europe temperate zone to improve delivery of ecosystem services compared with the services associated with long-established vegetated buffer zones. A common feature of all the studied IBZ sites is that tile drainage, which previously disc...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2018.05.0216
更新日期：2019-03-01 00:00:00
abstract：:Sulfur received extensive study as an input to terrestrial ecosystems from acidic deposition during the 1980s. With declining S deposition inputs across the eastern United States, there have been many studies evaluating ecosystem response, with the exception of agricultural watersheds. We used long-term (22 and 18 yr)...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2015.12.0613
更新日期：2016-07-01 00:00:00
abstract：:Cotton (Gossypium hirsutum L.) defoliant runoff was recently identified as an ecological risk. However, assessments are not supported by field studies. Runoff potential of three defoliant active ingredients, dimethipin (2,3-dihydro-5,6-dimethyl-1,4-dithiin 1,1,4,4-tetraoxide), thidiazuron (N-phenyl-N-1,2,3-thidiazol-5...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2003.2180
更新日期：2003-11-01 00:00:00
abstract：:Accretion of organic matter in wetlands provides long-term storage for nutrients and other contaminants. Water-table fluctuations and resulting alternate flooded and drained conditions may substantially alter the stability of stored materials including phosphorus (P). To study the effects of hydrologic fluctuation on ...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2001.302668x
更新日期：2001-03-01 00:00:00
abstract：:Copper sulfate (CuSO4) is applied periodically to commercial channel catfish (Ictalurus panctatus) ponds as an algicide or parasiticide. Current understanding of the chemistry of copper in soil-water systems suggests that copper may accumulate in pond sediments, although the forms and potential bioavailability of copp...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2001.303912x
更新日期：2001-05-01 00:00:00
abstract：:Broiler litter contains 17β-estradiol, estrone, and testosterone, which can contaminate surface waters when surface applied to grasslands and no-till fields. The objective of this study was to evaluate the effects of litter type (full or cake cleanout), litter treatment (none or sodium bisulfate), and number of flocks...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2017.08.0301
更新日期：2018-01-01 00:00:00
abstract：:Land application of biosolids is an effective means of recycling plant nutrients and is the primary method of biosolids reuse endorsed by the USEPA. One issue concerning biosolids application is the extent of the contribution of biosolids-borne plant nutrients to the overall crop concentration and uptake or removal of...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2015.06.0303
更新日期：2016-07-01 00:00:00
abstract：:Agriculture in the midwestern United States is a major anthropogenic source of nitrous oxide (NO) and is both a source and sink for methane (CH), but the degree to which cropping systems differ in emissions of these gases is not well understood. Our objectives were to determine if fluxes of NO and CH varied among crop...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2014.02.0077
更新日期：2014-11-01 00:00:00
abstract：:Changes in surface land use may threaten groundwater quality and ecosystem integrity, particularly in shallow aquifers where links between groundwater and surface activities are most intimate. In this study we examine the response of groundwater ecosystem to agricultural land uses in the shallow alluvial aquifer of th...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2012.0018
更新日期：2013-03-01 00:00:00
abstract：:A procedure involving alkaline extraction and solution 31P nuclear magnetic resonance (NMR) spectroscopy was developed and optimized for the characterization of P in animal manures (broiler, swine, beef cattle). Inclusion of ethylenediaminetetraacetic acid (EDTA) in the alkaline extraction solution recovered between 8...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：
更新日期：2004-03-01 00:00:00
abstract：:For (134/137)Cs, and many other soil contaminants, research into transfer to plants has focused on particular crops and phytoremediation candidates, producing uptake data for a small proportion of all plant taxa. Despite the significance of differences in uptake between plant taxa, the capacity of soil-to-plant transf...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2004.0454
更新日期：2005-08-09 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
pub_type： 杂志文章
doi：10.2134/jeq2016.04.0124
更新日期：2018-03-01 00:00:00
abstract：:Soil spatial variability has a profound influence on most agronomic and environmental processes at field and landscape scales, including site-specific management, vadose zone hydrology and transport, and soil quality. Mobile sensors are a practical means of mapping spatial variability because their measurements serve ...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2015.09.0458
更新日期：2016-07-01 00:00:00
