Publications

M. J. Helmers, Zhou, X., Asbjornsen, H., and Kolka, R., “Water quality benefits of perennial filter strips in row-cropped watersheds”, 2011.

H. Asbjornsen, Mora, G., and Helmers, M. J., “Variation in water uptake dynamics among contrasting agricultural and native plant communities in the Midwestern US”, Agriculture, ecosystems & environment, vol. 121, pp. 343-356, 2007.

M. J. Helmers, Zhou, X., Asbjornsen, H., Kolka, R., Tomer, M. D., and Cruse, R. M., “Sediment removal by prairie filter strips in row-cropped ephemeral watersheds”, Journal of environmental quality, vol. 41, pp. 1531-1539, 2012.

X. Zhou, Helmers, M. J., Asbjornsen, H., Kolka, R., and Tomer, M. D., “Perennial filter strips reduce nitrate levels in soil and shallow groundwater after grassland-to-cropland conversion”, Journal of environmental quality, vol. 39, pp. 2006-2015, 2010.

B. Chen, Krajewski, W. F., Zhou, X., and Helmers, M. J., “Organized variability of surface runoff responses across neighboring hillslopes in Iowa”, Journal of Hydrology, vol. 523, pp. 1-13, 2015.

V. Hernandez-Santana, Zhou, X., Helmers, M. J., Asbjornsen, H., Kolka, R., and Tomer, M., “Native prairie filter strips reduce runoff from hillslopes under annual row-crop systems in Iowa, USA”, Journal of HydrologyJournal of Hydrology, vol. 477, pp. 94-103, 2013.

M. Perez-Bidegain, Helmers, M. J., and Cruse, R., “Modeling phosphorus transport in an agricultural watershed using the WEPP model”, Journal of Environmental Quality, vol. 39, pp. 2121-2129, 2010.

G. Arbuckle J Jr, Helmers, M. J., Liebman, M. Z., and Schulte, L. A., “From vulnerability to resiliency: Iowa agriculture in the age of biorenewables”, 2008.

T. E. Smith, Kolka, R. K., Zhou, X., Helmers, M. J., Cruse, R. M., and Tomer, M. D., “Effects of native perennial vegetation buffer strips on dissolved organic carbon in surface runoff from an agricultural landscape”, Biogeochemistry, vol. 120, pp. 121-132, 2014.

A. M. Roberts, Helmers, M. J., and Fillery, I. R. P., “The adoptability of perennial-based farming systems for hydrologic and salinity control in dryland farming systems in Australia and the United States of America”, Crop and Pasture Science, vol. 60, pp. 83-99, 2009.

D. R. Lockett, Zhou, X., and Helmers, M. J., “Impacts of Incorporating Prairie Vegetation within Row Crop Production on Soil Hydraulic Properties”, 2011 Louisville, Kentucky, August 7-10, 2011. American Society of Agricultural and Biological Engineers, p. 1, 2011.