Dissolved organic nitrogen: an overlooked pathway of nitrogen loss from agricultural systems?

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：:Chemical speciation of soil cadmium (Cd) dictates its mobility and potential toxicity in the environment. Our objective was to compare temporal changes in speciation of Cd(II) reacted with samples from six Brazilian soils having varying Cd(II) sorption capacities. Cadmium L-edge X-ray absorption near edge structure (X...

journal_title：Journal of environmental quality

authors： Colzato M,Kamogawa MY,Carvalho HWP,Alleoni LRF,Hesterberg D

更新日期：2017-11-01 00:00:00

abstract：:Nutrient management plans (NMPs) for application of wastewater from concentrated animal feeding operations are designed to meet crop water and nutrient requirements, but implicitly assume that pathogenic microorganisms in the wastewater will be retained and die-off in the root zone. A NMP was implemented on a field pl...

journal_title：Journal of environmental quality

authors： Bradford SA,Segal E

更新日期：2009-06-23 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

authors： Lu J,Wu L,Letey J,Farmer WJ

更新日期：2002-07-01 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

authors： Kwon HY,Grunwald S,Beck HW,Jung Y,Daroub SH,Lang TA,Morgan KT

更新日期：2010-09-01 00:00:00

abstract：:Due to its resistance to many wastewater treatment processes, the antiepileptic drug carbamazepine (CBZ) is routinely found in wastewater effluent. Wastewater irrigation is an alternative to stream discharge of wastewater effluent, which utilizes the soil as a tertiary filter to remove excess nutrients and has the pot...

journal_title：Journal of environmental quality

authors： Walker CW,Watson JE,Williams C

更新日期：2012-07-01 00:00:00

abstract：:Knowledge about environmental impacts associated with the application of anaerobic digestion residue to agricultural land is of interest owing to the rapid proliferation of biogas plants worldwide. However, virtually no information exists concerning how soil-emitted NO is affected by the feedstock hydraulic retention ...

journal_title：Journal of environmental quality

authors： Van Nguyen Q,Jensen LS,Bol R,Wu D,Triolo JM,Vazifehkhoran AH,Bruun S

更新日期：2017-09-01 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：:Fertilizer leaching affects farm profitability and contributes to nonpoint-source pollution of receiving waters. This work aimed to establish nitrate nitrogen export from La Violada Gully in relation to nitrogen fertilization practices in its basin (La Violada Gully watershed, VGW, 19,637 ha) and especially in La Viol...

journal_title：Journal of environmental quality

authors： Isidoro D,Quílez D,Aragüés R

更新日期：2006-04-03 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：:A commonly used method of measuring enteric methane (CH4) emissions from ruminants is the SF6 tracer technique that measures respired and eructated CH4. However, within the animal, a small proportion of CH4 is produced post-ruminally and some of this may escape through the rectum. The comparison of emissions using a c...

journal_title：Journal of environmental quality

authors： McGinn SM,Beauchemin KA,Iwaasa AD,McAllister TA

更新日期：2006-08-09 00:00:00

abstract：:The influence of zoonotic pathogens in animal manure on human health and well-being as a direct or indirect cause of human enteric illness is examined. Available international data are considered, but the study is focused on the developing situation in western Canada, where it is certain there will be further rapid gr...

journal_title：Journal of environmental quality

authors： Guan TY,Holley RA

更新日期：2003-03-01 00:00:00

abstract：:Eco-environmental quality assessment (EQA) is an intricate and challenging task that must take into account numerous natural, economic, political, and social factors, which are subject to multiple conflicting criteria. In this paper, a methodological reference framework is developed for EQA that combines the fuzzy Del...

journal_title：Journal of environmental quality

authors： Wang X,Cao Y,Zhong X,Gao P

更新日期：2012-09-01 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：:Many soils of the Mediterranean region with a semiarid climate are subjected to progressive degradation as a result of water erosion. Biosolids and municipal solid wastes (MSW) were surface-applied once at three rates (40, 80, and 120 Mg ha(-1)) to different plots in a degraded semiarid ecosystem. The study was conduc...

journal_title：Journal of environmental quality

authors： Martínez F,Cuevas G,Calvo R,Walter I

更新日期：2003-03-01 00:00:00

abstract：:Prudent interventions for reducing selenium (Se) in groundwater and streams within an irrigated river valley must be guided by a sound understanding of current field conditions. An emerging picture of the nature of Se contamination within the Lower Arkansas River Valley in Colorado is provided by data from a large num...

journal_title：Journal of environmental quality

authors： Gates TK,Cody BM,Donnelly JP,Herting AW,Bailey RT,Mueller Price J

更新日期：2009-10-29 00:00:00

abstract：:The loss of phosphorus (P) from land to water is detrimental to surface water quality in many parts of New Zealand and Australia. Farming, especially pasture-based dairying, can be a source of P loss, but preventing it requires a range of fully costed strategies because little or no subsidies are available and the eff...

journal_title：Journal of environmental quality

authors： McDowell RW,Nash D

更新日期：2012-05-01 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

authors： Barbarick KA,Ippolito JA,McDaniel JP

更新日期：2016-07-01 00:00:00

abstract：:A shallow-depth ground water area was investigated to identify the dominant processes governing the distribution of hydrocarbon contaminants and hydrogeochemical parameters. The ground water in the study site has been highly contaminated with petroleum hydrocarbons. A preliminary pump-and-treatment remediation technol...

journal_title：Journal of environmental quality

authors： Lee JY,Cheon JY,Lee KK,Lee SY,Lee MH

更新日期：2001-09-01 00:00:00

abstract：:With increasing concern over potential polltion from farm wastes, there is a need for rapid and robust methods that can analyze livestock manure nutrient content. The near infrared spectroscopy (NIRS) method was used to determine nutrient content in diverse poultry manure samples (n=91). Various standard preprocessing...

journal_title：Journal of environmental quality

authors： Chen LJ,Xing L,Han LJ

更新日期：2010-09-01 00:00:00

abstract：:Soil concentrations and degradation rates of methyl isothio-cyanate (MITC), chloropicrin (CP), 1,3-dichloropropene (1,3-D), and dimethyl disulfide (DMDS) were determined under fumigant application scenarios representative of commercial raised bed, plastic mulched vegetable production systems. Five days after applicati...

journal_title：Journal of environmental quality

authors： Chellemi DO,Ajwa HA,Sullivan DA,Alessandro R,Gilreath JP,Yates SR

更新日期：2011-07-01 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

authors： Torbert HA,Watts DB

更新日期：2014-01-01 00:00:00

abstract：:Wetland soils are able to exhibit both consumption and production of greenhouse gases, and they play an important role in the regulation of the global carbon (C) cycle. Still, it is challenging to accurately evaluate the actual amount of C stored in wetlands. The incorporation of remote sensing data into digital soil ...

journal_title：Journal of environmental quality

authors： Kim J,Grunwald S

更新日期：2016-11-01 00:00:00

abstract：:Biochar has been heralded as an amendment to revitalize degraded soils, improve soil carbon sequestration, increase agronomic productivity, and enter into future carbon trading markets. However, scientific and economic technicalties may limit the ability of biochar to consistently deliver on these expectations. Past r...

journal_title：Journal of environmental quality

authors： Spokas KA,Cantrell KB,Novak JM,Archer DW,Ippolito JA,Collins HP,Boateng AA,Lima IM,Lamb MC,McAloon AJ,Lentz RD,Nichols KA

更新日期：2012-07-01 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

authors： Dao TH

更新日期：2004-01-01 00:00:00

abstract：:This study focused on the dissipation of propanil and 3,4 dichloroaniline (3,4 DCA) over time in the soil, field water, inlet water, and outlet water of paddy fields under three management systems: conventional water seeding (CON), conventional water seeding with supplied liquid manure (LMA), and dry seeding (DRY). Pr...

journal_title：Journal of environmental quality

authors： Milan M,Vidotto F,Piano S,Negre M,Ferrero A

更新日期：2012-09-01 00:00:00

abstract：:Use of organic by-products as soil amendments in agricultural production exemplifies a strategy for converting wastes to resources. The overall objective of this research was to evaluate the short- and intermediate-term effects of repeatedly amending sandy soil with paper mill residuals (PMR) and composted PMR in a ve...

journal_title：Journal of environmental quality

authors： Foley BJ,Cooperband LR

更新日期：2002-11-01 00:00:00

abstract：:In northern Florida, year-round forage systems are used in dairy effluent sprayfields to reduce nitrate leaching. Our purpose was to quantify forage N removal and monitor nitrate N (NO3(-)-N) concentration below the rooting zone for two perennial, sod-based, triple-cropping systems over four 12-mo cycles (1996-2000). ...

journal_title：Journal of environmental quality

authors： Woodard KR,French EC,Sweat LA,Graetz DA,Sollenberger LE,Macoon B,Portier KM,Rymph SJ,Wade BL,Prine GM,Van Horn HH

更新日期：2003-05-01 00:00:00

abstract：:The efficacy of vegetative buffer strips (VBS) in removing herbicides deposited from surface runoff is related to the ability of plant species to promote rapid herbicide degradation. A growth chamber study was conducted to compare C-atrazine (ATR) degradation profiles in soil rhizospheres from different forage grasses...

journal_title：Journal of environmental quality

authors： Lin CH,Lerch RN,Kremer RJ,Garrett HE

更新日期：2011-07-01 00:00:00

abstract：:Increasing chloride (Cl) concentration in soil solution has been shown to increase cadmium (Cd) concentration in soil solution and Cd uptake by plants, when grown in phosphate fertilizer- or biosolid-amended soils. However, previous experiments did not distinguish between the effect of Cl on biosolid-borne Cd compared...

journal_title：Journal of environmental quality

authors： Weggler K,McLaughlin MJ,Graham RD

更新日期：2004-03-01 00:00:00