Search Results - "Sharpley, A.N."

Recognizing the role of soil organic phosphorus in soil fertility and water quality by Dodd, R.J., Sharpley, A.N.

“…•Reviews the impact of the USDA's soil health initiative on soil organic P pools.•Shows that promoting organic C stores increases organic P in agricultural…”
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Approximating Phosphorus Release from Soils to Surface Runoff and Subsurface Drainage by McDowell, R.W., Sharpley, A.N.

“…ABSTRACT Phosphorus application in excess of crop needs has increased the concentration of P in surface soil and runoff and led many states to develop P‐based…”
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Linking Soil Erosion to Instream Dissolved Phosphorus Cycling and Periphyton Growth by Brennan, R.B., Scott, J.T., Sharpley, A.N., Lally, H.T., Jarvie, H.P., Bowes, M.J., Haggard, B.E., Gbur, E.

“…Phosphorus (P) is a limiting nutrient in freshwater systems and when present in runoff from agricultural lands or urban centers may contribute to excessive…”
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An empirical model for dissolved phosphorus in runoff from surface-applied fertilizers by Vadas, P.A., Owens, L.B., Sharpley, A.N.

“…Dissolved phosphorus (P) in runoff from surface-applied fertilizers can be relatively great, but commonly used, field or watershed-scale computer models often…”
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Variation of phosphorus leached from Pennsylvanian soils amended with manures, composts or inorganic fertilizer by McDowell, R.W., Sharpley, A.N.

“…The continued application of P as fertilizer or manure at rates exceeding crop requirements can increase soil P concentrations and the potential for P loss to…”
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Atmospheric deposition contributes little nutrient and sediment to stream flow from an agricultural watershed by McDowell, R.W., Sharpley, A.N.

“…Atmospheric deposition of nutrients within agricultural watersheds has received scant attention and is poorly understood compared to nutrient transport in…”
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Analysis of Potentially Mobile Phosphorus in Arable Soils Using Solid State Nuclear Magnetic Resonance by McDowell, R.W., Condron, L.M., Mahieu, N., Brookes, P.C., Poulton, P.R., Sharpley, A.N.

“…ABSTRACT In many intensive agroecosystems continued inputs of phosphorus (P) over many years can significantly increase soil P concentrations and the risk of P…”
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Analysis of potentially mobile phosphorus in arable soils using solid state nuclear magnetic resonance by MCDOWELL, R. W, CONDRON, L. M, MAHIEU, N, BROOKES, P. C, POULTON, P. R, SHARPLEY, A. N

“…In many intensive agroecosystems continued inputs of phosphorus (P) over many years can significantly increase soil P concentrations and the risk of P loss to…”
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Seasonal flow, nutrient concentrations and loading patterns in stream flow draining an agricultural hill-land watershed by Pionke, H.B., Gburek, W.J., Schnabel, R.R., Sharpley, A.N., Elwinger, G.F.

“…The effects of seasonality on nutrient patterns and export in streamflow were determined for a 7.3 km 2 agricultural hill-land watershed in Pennsylvania for a…”
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Runoff transport of faecal coliforms and phosphorus released from manure in grass buffer conditions by Stout, W.L, Pachepsky, Y.A, Shelton, D.R, Sadeghi, A.M, Saporito, L.S, Sharpley, A.N

“…Aims: To test the hypothesis that faecal coliform (FC) and phosphorus (P) are transported similarly in surface runoff through the vegetative filter strip after…”
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Effect of plot scale and an upslope phosphorus source on phosphorus loss in overland flow by McDowell, R.W., Sharpley, A.N.

“… Phosphorus (P) in overland flow is mediated by soil P, added P, erosion, and hydrological processes and their interaction as affected by landscape position…”
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Effect of Mixing Soil Aggregates on the Phosphorus Concentration in Surface Waters by Maguire, R.O., Edwards, A.C., Sims, J.T., Kleinman, P.J.A., Sharpley, A.N.

“…ABSTRACT At any time, the phosphorus (P) concentration in surface waters is determined by a complex interaction of inputs of soluble P and sorption–desorption…”
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Soil phosphorus dynamics following land application of unsaturated and partially saturated red mud and water treatment residuals by Brennan, R.B., Murnane, J.G., Sharpley, A.N., Herron, S., Brye, K.R., Simmons, T.

“…The secondary use of P-sorbing industrial by-products as a fertilizer or soil conditioner is gaining increased attention, particularly in light of diminishing…”
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New Gold Rush: Fueling Ethanol Production while Protecting Water Quality by Simpson, T.W, Sharpley, A.N, Howarth, R.W, Paerl, H.W, Mankin, K.R

“…Renewable fuel production, particularly grain-based ethanol, is expanding rapidly in the USA. Although subsidized grain-based ethanol may provide a…”
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Extractability of added phosphorus in short-term equilibration tests of Portuguese soils by Indiati, R, Neri, U, Sharpley, A.N, Fernandes, M.L

“…As soil phosphorus (P) availability changes with soil type and time after fertilizer application, use of a P availability index, "F" (fraction of added P…”
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Amounts, forms, and solubility of phosphorus in soils receiving manure by Sharpley, A.N, McDowell, R.W, Kleinman, P.J.A

“…Continually land-applying manure at rates exceeding crop removal can change soil P chemistry and increase soil P to levels that are of environmental concern…”
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Relating soil phosphorus to dissolved phosphorus in runoff: a single extraction coefficient for water quality modeling by Vadas, P.A, Kleinman, P.J.A, Sharpley, A.N, Turner, B.L

“…Phosphorus transport from agricultural soils contributes to eutrophication of fresh waters. Computer modeling can help identify agricultural areas with high…”
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Nonpoint pollution of surface waters with phosphorus and nitrogen by Carpenter, S. R., Caraco, N. F., Correll, D. L., Howarth, R. W., Sharpley, A. N., Smith, V. H.

“…Agriculture and urban activities are major sources of phosphorus and nitrogen to aquatic ecosystems. Atmospheric deposition further contributes as a source of…”
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Freeze-thaw effects on phosphorus loss in runoff from manured and catch-cropped soils by Bechmann, M.E, Kleinman, P.J.A, Sharpley, A.N, Saporito, L.S

“…Concern over nonpoint source P losses from agricultural lands to surface waters in frigid climates has focused attention on the role of freezing and thawing on…”
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Phosphorus Loss from an Agricultural Watershed as a Function of Storm Size by Sharpley, A.N, Kleinman, P.J.A, Heathwaite, A.L, Gburek, W.J, Folmar, G.J, Schmidt, J.P

“…Phosphorus (P) loss from agricultural watersheds is generally greater in storm rather than base flow. Although fundamental to P-based risk assessment tools,…”
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