Calibration and validation of DRAINMOD to design subsurface drainage systems for Iowa's tile landscapes von Singh, R., Helmers, M.J., Qi, Zhiming

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Energy use in pig production: An examination of current Iowa systems von Lammers, P. J, Kenealy, M. D, Kliebenstein, J. B, Harmon, J. D, Helmers, M. J, Honeyman, M. S

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Native prairie filter strips reduce runoff from hillslopes under annual row-crop systems in Iowa, USA von Hernandez-Santana, V., Zhou, X., Helmers, M.J., Asbjornsen, H., Kolka, R., Tomer, M.

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Nonsolar energy use and one-hundred-year global warming potential of Iowa swine feedstuffs and feeding strategies von Lammers, P.J, Kenealy, M.D, Kliebenstein, J.B, Harmon, J.D, Helmers, M.J, Honeyman, M.S

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Overland flow modeling in a vegetative filter considering non-planar topography and spatial variability of soil hydraulic properties and vegetation density von Helmers, M.J., Eisenhauer, D.E.

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Corn stover harvest N and energy budgets in central Iowa von Malone, R.W., Herbstritt, S., Ma, L., Richard, T.L., Cibin, R., Gassman, P.W., Zhang, H.H., Karlen, D.L., Hatfield, J.L., Obrycki, J.F., Helmers, M.J., Jaynes, D.B., Kaspar, T.C., Parkin, T.B., Fang, Q.X.

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Modeling Cadmium Transport in Neutral and Alkaline Soil Columns at Various Depths von QI, Zhi-Ming, FENG, Shao-Yuan, HELMERS, M.J.

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Energy use in pig production: An examination of current Iowa systems1 von Lammers, P. J., Kenealy, M. D., Kliebenstein, J. B., Harmon, J. D., Helmers, M. J., Honeyman, M. S.

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Energy and carbon inventory of Iowa swine production facilities von Lammers, P.J., Honeyman, M.S., Harmon, J.D., Helmers, M.J.

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Comparison of Construction Costs for Vegetative Treatment Systems in the Midwestern United States von B. J. Bond

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Water Balance Investigation of Drainage Water Management in Non-Weighing Lysimeters von Riley, K.D, Helmers, M.J, Lawlor, P.A, Singh, R

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Using Total Solids Concentration to Estimate Nutrient Content of Feedlot Runoff Effluent from Solid Settling Basins, Vegetative Infiltration Basins, and Vegetative Treatment Areas von Andersen, D.S, Burns, R.T, Moody, L.B, Helmers, M.J

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Construction Resource Use of Two Different Types and Scales of Iowa Swine Production Facilities von Lammers, P.J, Honeyman, M.S, Harmon, J.D, Kliebenstein, J.B, Helmers, M.J

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Comparison of Timing and Volume of Subsurface Drainage under Perennial Forage and Row Crops in a Tile-Drained Field in Iowa von Goeken, R J, Zhou, X, Helmers, M J

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FLOW PATHWAYS AND SEDIMENT TRAPPING IN A FIELD-SCALE VEGETATIVE FILTER von Helmers, M.J, Eisenhauer, D.E, Dosskey, M.G, Franti, T.G, Brothers, J.M, McCullough, M.C

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Nitrogen loss on tile-drained Mollisols as affected by nitrogen application rate under continuous corn and corn-soybean rotation systems von Helmers, M.J., Zhou, X., Baker, J.L., Melvin, S.W., Lemke, D.W.

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Phosphorus Sorption Capacity of Six Iowa Soils before and after Five Years of Use as Vegetative Treatment Areas von Andersen, Daniel S, Helmers, Matthew J, Burns, Robert T

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MODELING SEDIMENT TRAPPING IN A VEGETATIVE FILTER ACCOUNTING FOR CONVERGING OVERLAND FLOW von Helmers, M.J, Eisenhauer, D.E, Franti, T.G, Dosskey, M.G

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High-frequency, in situ sampling of field woodchip bioreactors reveals sources of sampling error and hydraulic inefficiencies von Maxwell, BM, Birgand, F, Schipper, LA, Barkle, G, Rivas, AA, Helmers, MJ, Christianson, LE

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The conversion of permittivity as measured by a PR2 capacitance probe into soil moisture values for Des Moines lobe soils in Iowa: The conversion of permittivity as measured by a P... von Qi, Z., Helmers, M. J.

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