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 experiment was conducted on a Ruston fine sandy loam with a factorial arrangement on 21 large paddocks. Runoff water was collected from natural rainfall events from 2001 to 2003. Runoff water and soil samples were analyzed for nutrients and sediments. Runoff was generally greater (29%) from grazed than hayed pastures regardless of the litter application rate. There was greater inorganic N in the runoff from grazed paddocks when litter rate was based on N rather than P. The mean total P loss per runoff event for all treatments ranged from 7 to 45 g ha(-1) and the grazed treatment with litter applied on N basis had the greatest total P loss. Total dissolved P was the dominant P fraction in the runoff, ranging from 85% to 93% of the total P. The soluble reactive P was greater for treatments with litter applied on N basis regardless of pasture management. Runoff total sediments were greater for N-based litter application compared to those which received litter on P basis. Our results indicate that litter may be applied on N basis if the pasture is hayed and the soil P is low. In contrast, litter rates should be based on a P-basis if pasture is grazed.
journal_name
J Environ Qualjournal_title
Journal of environmental qualityauthors
Sistani KR,Brink GE,Oldham JLdoi
10.2134/jeq2007.0191subject
Has Abstractpub_date
2008-03-01 00:00:00pages
718-24issue
2eissn
0047-2425issn
1537-2537journal_volume
37pub_type
杂志文章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
pub_type： 杂志文章
doi：10.2134/jeq2007.0583
更新日期：2008-06-23 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
pub_type： 杂志文章
doi：10.2134/jeq2009.0392
更新日期：2010-07-01 00:00:00
abstract：:The accumulation of polycyclic aromatic hydrocarbons (PAH) in soil, plants, and water may impart negative effects on ecosystem and human health. We quantified the concentration and distribution of 41 PAH (n = 32), organic C, total N, and S (n = 140) and investigated PAH sources using a chronosequence of floodplain soi...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2009.0270
更新日期：2010-02-19 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：: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：:This study was undertaken to determine the fate of As, Mo, and V (trace elements, TEs) in the sediments of a constructed wetland in use for the remediation of potentially toxic trace element-contaminated agricultural drainwater. After three years of wetland operation, sediment cores were collected to determine changes...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2003.2428
更新日期：2003-11-01 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：:Buffer strips between land and waters are widely applied measures in diffuse pollution management, with desired outcomes across other factors. There remains a need for evidence of pollution mitigation and wider habitat and societal benefits across scales. This paper synthesizes a collection of 16 new primary studies a...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2019.01.0020
更新日期：2019-03-01 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：:A vegetated filter strip (VFS) is a measure commonly implemented in agricultural landscapes for the purpose of improving water quality. However, much of the evidence to support their effectiveness comes from warm regions dominated by rainfall driven runoff. This study assessed the performance of VFS plots and compared...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2018.12.0452
更新日期：2019-07-01 00:00:00
abstract：:Spray irrigation of forested land can provide an effective system for nutrient removal and treatment of municipal wastewater. Evolution of N2 + N2O from denitrifying activity is an important renovation pathway for N applied to forested land treatment systems. Federal and state guidance documents for design of forested...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2001.3041411x
更新日期：2001-07-01 00:00:00
abstract：:Accurately capturing dynamic soil response to disturbance effects in agroecosystem models remains elusive, thereby limiting projections of climate change mitigation potential. Perennial grasses cultivated in zero-tillage management systems hold promise as sustainable agroecosystems. High-yielding tropical C grasses of...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2017.07.0280
更新日期：2018-07-01 00:00:00
abstract：:The adsorption of chromate on mineral surfaces has received much attention due to its toxicity in natural systems. Spectroscopic studies have demonstrated that chromate forms inner-sphere complexes on variable-charge surfaces. However, in natural systems chromate has been observed to be fairly mobile, which has been e...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2004.1703
更新日期：2004-09-01 00:00:00
abstract：:Every year, the production of coal-bed natural gas in the Powder River Basin results in the discharge of large amounts of coal-bed methane water (CBMW) in Wyoming; however, no sustainable disposal methods for CBMW are currently available. A greenhouse study was conducted to evaluate the potential to use CBMW as a sour...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2016.10.0403
更新日期：2017-05-01 00:00:00
abstract：:Consumption of microbially contaminated ground water can cause adverse health effects and the processes involved in pathogen transport in aquifers need to be understood. The influences of distance, flow velocity, and colloid size on colloid transport were examined in homogenous pea-gravel media using an 8-m column and...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2005.0286
更新日期：2006-07-06 00:00:00
abstract：:A field study was initiated in 1992 to investigate the long-term impacts of beef feedlot manure application (composted and uncomposted) on nutrient accumulation and movement in soil, corn silage yield, and nutrient uptake. Two application strategies were compared: providing the annual crop nitrogen (N) requirement (N-...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2004.0363
更新日期：2005-08-09 00:00:00
abstract：:DIMBOA (3,4-dihydro-2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3-one), a major benzoxazinone of Poaceae plants, was isolated and purified from corn seedlings. The effect of isolated and purified DIMBOA on the degradation of atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine], and its toxic breakdown produc...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2004.0409
更新日期：2005-11-07 00:00:00
abstract：:Although the reduction of nutrient loading between uplands and streams is sometimes considered evidence of the effect of wetlands acting as buffer zones, the influence of valley bottom wetlands (VBWs) on NO(3)(-) loading has seldom been assessed at the catchment scale. The objective of this study was to quantify the i...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2006.0091
更新日期：2006-10-27 00:00:00
abstract：:To control ammonia (NH(3)) volatilization from the dairy cattle (Bos taurus) manure composting process, a compost pile was covered with mature compost and the gas emissions evaluated using the dynamic chamber system. The peak of NH(3) volatilization observed immediately after piling up of the compost was reduced from ...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2008.0083
更新日期：2009-02-06 00:00:00
abstract：:Triclosan (TCS) and triclocarban (TCC), widely used as antibacterial agents, have been frequently detected in biosolids. Biosolids land application may introduce pharmaceuticals and personal care products (PPCPs) such as TCS and TCC into the environment. Microcosm studies were conducted to investigate TCS and TCC tran...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2009.0055
更新日期：2010-07-01 00:00:00
abstract：:In the relatively pristine ecosystem in Kejimkujik Park, Nova Scotia, methylmercury (MeHg) concentrations in loons, Gavia immer, are among the highest recorded anywhere in the world. This study investigated the influence of bedrock lithology on MeHg concentrations in wetlands. Twenty-five different wetland field sites...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2003.2085
更新日期：2003-11-01 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
pub_type： 杂志文章
doi：10.2134/jeq2013.02.0066
更新日期：2013-09-01 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：:A field study was initiated to determine survival, growth characteristics, and metal uptake of two montane riparian willow species, Geyer (Salix geyeriana Andersson) and mountain (S. monticola Bebb) willow, grown in amended fluvial mine tailing deposits. Revegetation was done with staked and previously rooted cuttings...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2008.0153
更新日期：2009-02-25 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
pub_type： 杂志文章
doi：10.2134/jeq2007.0100
更新日期：2007-10-24 00:00:00
abstract：:Perchlorate (ClO4-) contamination of ground water and surface water is a widespread problem, particularly in the western United States. This study examined the effect of biodegradation on perchlorate fate and transport in soils. Solute transport experiments were conducted on two surface soils. Pulses of solution conta...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2003.4000
更新日期：2003-01-01 00:00:00
abstract：:Denitrifying bioreactors using woodchips or other slow-release carbon sources can be an effective method for removing nitrate (NO) from wastewater and tile drainage. However, the ability of these systems to remove fecal microbes from wastewater has been largely uninvestigated. In this study, reductions in fecal indica...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2015.06.0326
更新日期：2016-05-01 00:00:00
abstract：:Laboratory microcosm experiments were used to assess the effects of environmental parameters on the persistence of the Bacteroides 16S rRNA genes derived from equine fecal samples in stream water to investigate the utility of Bacteroides spp. as fecal indicator organisms. Quantitative real-time polymerase chain reacti...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2008.0258
更新日期：2009-04-27 00:00:00
abstract：:In this study, seven organic amendments (biosolid compost, farm yard manure, fish manure, horse manure, spent mushroom, pig manure, and poultry manure) were investigated for their effects on the reduction of hexavalent chromium [chromate, Cr(VI)] in a mineral soil (Manawatu sandy soil) low in organic matter content. A...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2003.1200
更新日期：2003-01-01 00:00:00
abstract：:An emerging poultry manure management practice is in-house windrowing to disinfect the litter. However, this practice is likely to increase emissions of ammonia (NH) and nitrous oxide (NO) from the windrowed litter. The objective of this study was to quantitatively compare NH and NO emissions from broiler houses with ...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2016.09.0368
更新日期：2017-05-01 00:00:00
