Research Topics
| Brian E HaggardSummaryAffiliation: University of Arkansas Country: USA Publications
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Detail Information
Publications
Water quality impacts of converting to a poultry litter fertilization strategyR D Harmel
USDA ARS, Grassland Soil and Water Research Laboratory, 808 East Blackland Road, Temple, TX 76502, USA
J Environ Qual 33:2229-42. 2004..Results demonstrate that a properly managed annual litter application (4.5 Mg ha(-1) or less depending on litter N and P content) with supplemental N should supply necessary nutrients without detrimental water quality impacts...- Variations in stream water and sediment phosphorus among select Ozark catchmentsBrian E Haggard
Biological and Agricultural Engineering Dep, University of Arkansas, 203 Engineering Hall, Fayetteville, AR 72701, USA
J Environ Qual 36:1725-34. 2007..Thus, M3P and EPC 0 estimates from stream sediments may be valuable yet simple indicators of whether benthic sediments act as sinks or sources of P in fluvial systems, as well as estimating changes in stream SRP concentrations... - Phosphorus concentrations, loads, and sources within the Illinois River drainage area, northwest Arkansas, 1997-2008Brian E Haggard
Arkansas Water Resources Center, Univ of Arkansas, Division of Agriculture, 203 Engineering Hall, Fayetteville, AR 72701, USA
J Environ Qual 39:2113-20. 2010.... - Pharmaceuticals and other organic chemicals in selected north-central and northwestern Arkansas streamsBrian E Haggard
Biological and Agricultural Engineering Department, University of Arkansas, 203 Engineering Hall, Fayetteville, AR 72701, USA
J Environ Qual 35:1078-87. 2006.... 
Net changes in antibiotic concentrations downstream from an effluent dischargeBrian E Haggard
Arkansas Water Resources Center, University of Arkansas Division of Agriculture, 203 Engineering Hall, Fayetteville, AR 72701, USA
J Environ Qual 38:343-52. 2009..This study illustrates that some antibiotics do not travel conservatively in streams and that uptake processes occur over the scale of kilometers, linking upstream effluent sources to downstream processing over large spatial scales...- Phosphorus flux from bottom sediments in Lake Eucha, OklahomaB E Haggard
USDA ARS, Poultry Production and Product Safety Research Unit, 203 Engineering Hall, Fayetteville, AR 72701, USA
J Environ Qual 34:724-8. 2005..13 mg m(-2) d(-1)). The internal P load (12 Mg yr(-1)) from reservoir bottom sediments was almost 25% of the external P load (approximately 48 Mg yr(-1)) estimated using a calibrated watershed model... - Change point analysis of phosphorus trends in the Illinois River (Oklahoma) demonstrates the effects of watershed managementJ Thad Scott
University of Arkansas, Fayetteville, AR, USA
J Environ Qual 40:1249-56. 2011..Furthermore, the study demonstrates how detecting changes in long-term water quality data sets requires statistical methods capable of identifying change point and nonlinear responses... - Predicting dissolved phosphorus in runoff from manured field plotsP A Vadas
USDA ARS, Pasture Systems and Watershed Management Research Unit, Building 3702, Curtin Road, University Park, PA 16802 3702, USA
J Environ Qual 34:1347-53. 2005..Future work should test the model at field or watershed scales and at longer time scales... - Biological assessment to support ecological recovery of a degraded headwater systemScott D Longing
Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701, USA
Environ Manage 46:459-70. 2010..Monitoring future biological recovery and determining the contribution of changing assemblages to specific ecological processes would provide a critical underpinning for adaptive management and ecologically-effective restoration... - Evaluation of the phosphorus source component in the phosphorus index for pasturesP B DeLaune
Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701, USA
J Environ Qual 33:2192-200. 2004..83). These data indicate that the P index for pastures can accurately assess the risk of P loss from fields receiving poultry litter applications in Arkansas and provide a more realistic risk assessment than threshold soil test P levels... - Reducing phosphorus runoff from swine manure with dietary phytase and aluminum chlorideD R Smith
USDA ARS, National Soil Erosion Research Laboratory, Purdue University, 275 South Russell Street, West Lafayette, IN 47907, USA
J Environ Qual 33:1048-54. 2004..Results from this study indicate that producers should use dietary manipulation with phytase and AlCl3 manure amendments to reduce potential P losses from fields fertilized with swine manure... - Dredging of drainage ditches increases short-term transport of soluble phosphorusDouglas R Smith
USDA ARS, National Soil Erosion Research Laboratory, 275 Russell Street, West Lafayette, IN 47907, USA
J Environ Qual 35:611-6. 2006..Transport of soluble P immediately after dredging will likely increase in drainage ditches; however, dredging is a necessary management tool to ensure adequate discharge of water from surrounding fields... - Runoff water quality from broiler litter-amended tall fescue in response to natural precipitation in the Ozark HighlandsB C Menjoulet
Dep Crop, Soil, and Environmental Sciences, Univ of Arkansas, Fayetteville, AR 72701, USA
J Environ Qual 38:1005-17. 2009..Since precipitation is temporally variable, evaluating runoff water quality in response to natural precipitation over several years is key to ascertaining the long-term impacts of surface-applied soil amendments like broiler litter... - Development of a phosphorus index for pastures fertilized with poultry litter--factors affecting phosphorus runoffPaul B DeLaune
Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72701, USA
J Environ Qual 33:2183-91. 2004..A modification of the P index using scientific data should strengthen the ability of the P index concept to evaluate locations and management alternatives for P losses...