Abstract：
:Three promising phytoextracting perennial weed species [ L. (ox-eye daisy), L. (curly dock), and L. (Canada goldenrod)] were planted in monoculture plots at two polychlorinated biphenyl (PCB)-contaminated sites in southern Ontario and followed over 2 yr to investigate the effects of plant age, contaminant characteristics, and species-specific properties on PCB uptake and accumulation patterns in plant tissues. Results from this study indicate that, for each of these weed species, shoot contaminant concentrations and total biomass are dependent on plant age and life cycle (vegetative and reproductive stages), which affects the total amount of PCBs phytoextracted on a per-plant basis. Even at suboptimal planting densities of 3 to 5 plants m, all three weed species extracted a greater quantity of PCBs per unit area (4800-10,000 μg m) than the known PCB-accumulator L. ssp (cv Howden pumpkins) (1500-2100 μg m) at one of the two sites. Calculated PCB extractions based on theoretical optimal planting densities were significantly higher at both sites and illustrate the potential of these weeds for site remediation. This study also demonstrates that plants may accumulate PCBs along the stem length in a similar manner as plants.
journal_name
J Environ Qualjournal_title
Journal of environmental qualityauthors
Ficko SA,Rutter A,Zeeb BAdoi
10.2134/jeq2011.0144subject
Has Abstractpub_date
2011-11-01 00:00:00pages
1870-7issue
6eissn
0047-2425issn
1537-2537journal_volume
40pub_type
杂志文章abstract：:Efficient use of manure nutrients by crops is necessary to minimize losses to the environment. This field study examined the possibility of replacing side-banded mineral P with precision-placed high-P sludge (6.2-11.0% dry matter) obtained after settling dairy manure slurry. The sludge was injected at about 30 kg P ha...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2011.0284
更新日期：2012-03-01 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
pub_type： 杂志文章
doi：10.2134/jeq2007.0024
更新日期：2008-05-02 00:00:00
abstract：:Practical guidelines addressing the timing of manure and nutrient application must consider the concerns of the farm operators while ensuring the protection of the environment. An approach was developed and analyzed through case studies to determine the first recommended day in the spring, and the last in the fall, fo...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2005.0430
更新日期：2007-01-09 00:00:00
abstract：:Beef cattle feedlots emit large amounts of the greenhouse gases (GHG) methane (CH) and nitrous oxide (NO), as well as ammonia (NH), which contributes to NO emission when NH is deposited to land. However, there is a lack of simultaneous, in situ, and nondisturbed measurements of the major GHG gas components from beef c...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2015.06.0278
更新日期：2015-11-01 00:00:00
abstract：:The pastoral grazing of farmed red deer (Cervus elaphus) is common in New Zealand. However, red deer have a natural instinct to seek out water and wallow in it. Often, in headwater catchments, they will create a wallow in a wet area connected to a waterway. Aesthetically, wallowing areas can be unpleasant and give the...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2007.0015
更新日期：2007-07-17 00:00:00
abstract：:Long-term monitoring data from agricultural watersheds are needed to determine if efforts to reduce nutrient transport from crop and pasture land have been effective. Goodwater Creek Experimental Watershed (GCEW), located in northeastern Missouri, is a high-runoff-potential watershed dominated by claypan soils. The ob...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2014.02.0059
更新日期：2015-01-01 00:00:00
abstract：:Terbuthylazine (TA) is a herbicide that has been introduced for weed control in corn cultivations as a direct replacement for atrazine. Because incorporation of different organic amendments (OAs) is a common practice in this crop, this study investigated the effects of different OAs, including urban sewage sludge, pou...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2008.0162
更新日期：2009-02-25 00:00:00
abstract：:Human activities have caused toxic metal pollution and ecological risks to agricultural soil. In this study, 291 topsoil samples, collected in the agricultural soil system of Yuzhong, China, were selected to study the toxic metals and metalloids contamination characteristics, source and ecological risk based on geosta...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.1002/jeq2.20163
更新日期：2020-10-01 00:00:00
abstract：:Water resources protection from nitrate nitrogen (NO3-N) contamination is an important public concern and a major national environmental issue. The abilities of the SOIL-SOILN model to simulate water drainage and nitrate N fluxes from orchardgrass (Dactylis glomerata L.) were evaluated using data from a 3-yr field exp...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2001.302584x
更新日期：2001-03-01 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
pub_type： 杂志文章
doi：
更新日期：2010-11-01 00:00:00
abstract：:The short life span of many street trees in the Montreal downtown area may be due in part to higher than standard concentrations of trace metals in the tree pit soils. The effects of land use, soil organic matter, and time since tree planting in a given tree pit (soil age) were studied with respect to the total concen...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2013.02.0055
更新日期：2013-09-01 00:00:00
abstract：:There is interest in understanding effects of amending soil with manure in a cultivation setting and if composting can provide benefits. Raw or composted manure from cattle administered with and without sulfamethazine, chlortetracycline, and tylosin was amended to loamy sand and silty clay loam soils, where lettuce ( ...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2018.02.0078
更新日期：2018-11-01 00:00:00
abstract：:The objectives of this study were to determine the effect of bedding material (corn stover, soybean stover, wheat straw, switchgrass, wood chips, wood shavings, corn cobs, and shredded paper) on concentration of odorous volatile organic compounds (VOC) in bedded pack material and to determine the effect of bedding mat...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2012.0251
更新日期：2013-01-01 00:00:00
abstract：:Acidity of water from abandoned underground mines decreases over time, and the rate of decrease can help formulate remediation approaches and treatment system designs. The objective of this study was to determine an overall acidity decay rate for above-drainage underground mines in northern West Virginia from a large ...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2009.0229
更新日期：2010-04-13 00:00:00
abstract：:Polyacrylamide (PAM) treatment of irrigation water is a growing conservation technology in irrigated agriculture in recent years. There is a concern regarding the environmental impact of PAM after its application. The effects of anionic PAM on the sorption characteristics of four widely used herbicides (metolachlor, a...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2002.1226
更新日期：2002-07-01 00:00:00
abstract：:Reactions of heavy metals with soil are important in determining metal fates in the environment. Sorption characteristics of two heavy metals, Cd and Pb, in three tropical soils (Mollisol, Oxisol, and Ultisol) from Puerto Rico were assessed at varying metal concentrations (0 to 1.2 mM) and pH values (approximately 2 t...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：
更新日期：2002-03-01 00:00:00
abstract：:Animal manure contains partially digested feed fiber and grains where phosphorus (P) is bound in organic compounds that include myo-inositol 1,2,3,5/4,6-hexakis dihydrogenphosphate or phytic acid (IP6). Information is needed on the effects of other (non-IP6) organic ligands (LIGND) on the enzymatic dephosphorylation o...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：:Fall application of anhydrous ammonia in Manitoba is common but its impact on nitrous oxide (NO) emissions is not well known. A 2-yr study compared application before freeze-up in late fall to spring pre-plant application of anhydrous ammonia on nitrous oxide (NO) emissions from a clay soil in the Red River Valley, Ma...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2015.03.0159
更新日期：2016-07-01 00:00:00
abstract：:Alum [Al(SO4) ·14HO] addition to poultry litter has been shown to reduce ammonia (NH) concentrations in poultry houses; however, its effects on greenhouse gas (GHG; NO, CH, and CO) emissions is unknown. The objectives of this study were to determine the effects of alum additions on (i) in-house NH and GHG concentratio...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2014.09.0404
更新日期：2015-09-01 00:00:00
abstract：:The effect of irrigation with reclaimed effluent (RE) (after secondary treatment) on the mechanisms and rates of nitrite formation, N2O emissions, and N mineralization is not well known. Grumosol (Chromoxerert) soil was incubated for 10 to 14 d with fresh water (FW) and RE treated with 15NO3- and 15NH4+ to provide a b...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2004.0852
更新日期：2004-05-01 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
pub_type： 杂志文章
doi：10.2134/jeq2007.0381
更新日期：2008-06-23 00:00:00
abstract：:Heavy metal pollution of soil has been recognized as a major factor impeding soil microbial processes. From this perspective, we studied responses of the soil biological activities to metal stress simulated by soil amendment with Zn, Pb, and Cd chlorides. The amounts of heavy metal salts added to five metal-polluted s...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2003.1346
更新日期：2003-07-01 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：:In their natural state, river floodplains are heterogeneous and dynamic ecosystems that may retain and remove large quantities of nitrogen from surface waters. We compared the soil nitrogen dynamics in different types of habitat patches in a restored and a channelized section of a Thur River floodplain (northeast Swit...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2012.0059
更新日期：2012-11-01 00:00:00
abstract：:An important aspect for the evaluation of fire effects in slash-and-burn agricultural system, as well as in wildfire, is the soil burn severity. The objective of this study is to estimate the maximum temperature reached in real soil burn events using energy dispersive X-ray fluorescence (EDXRF) as an analytical tool, ...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2015.06.0305
更新日期：2016-05-01 00:00:00
abstract：:The use of alternative N sources relative to conventional ones could mitigate soil-surface NO emissions. Our objective was to evaluate the effect of anhydrous ammonia (AA), urea, and polymer-coated urea (ESN) on NO emissions for continuous corn ( L.) production. Corn received 110 kg N ha in 2009 and 180 kg N ha in 201...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2013.12.0496
更新日期：2015-03-01 00:00:00
abstract：:This study compares two methods of dairy manure application-surface broadcast and shallow disk injection-on the fate and transport of natural estrogens in surface runoff from 12 field plots in central Pennsylvania. Ten natural surface runoff events were sampled over a 9-mo period after fall manure application. Results...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2016.05.0173
更新日期：2016-11-01 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
pub_type： 杂志文章
doi：10.2134/jeq2006.0468
更新日期：2007-08-31 00:00:00
abstract：:This paper reviews trace metal dynamics in floodplain soils using the Elbe floodplains in Germany as an example of extraordinary importance because of the pollution level of its sediments and soils. Trace metal dynamics are determined by processes of retention and release, which are influenced by a number of soil prop...
journal_title：Journal of environmental quality
pub_type： 杂志文章,评审
doi：10.2134/jeq2008.0299
更新日期：2009-05-20 00:00:00
abstract：:Eutrophication of surface waters due to nonpoint source pollution from urban environments has raised awareness of the need to decrease runoff from roads and other impervious surfaces. These concerns have led to precautionary P application restrictions on turf and requirements for vegetative buffer strips. The impacts ...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2006.0232
更新日期：2007-01-25 00:00:00
