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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.
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. L. Hladik, Bradbury, S., Schulte, L. A., Helmers, M., Witte, C., Kolpin, D. W., Garrett, J. D., and Harris, M., Neonicotinoid insecticide removal by prairie strips in row-cropped watersheds with historical seed coating use, Agriculture, Ecosystems, and Environment, vol. 241, pp. 160-167, 2017.
M. L. Hladik, Bradbury, S., Schulte, L. A., Helmers, M., Witte, C., Kolpin, D. W., Garrett, J. D., and Harris, M., Neonicotinoid insecticide removal by prairie strips in row-cropped watersheds with historical seed coating use, Agriculture, Ecosystems, and Environment, vol. 241, pp. 160-167, 2017.
M. L. Hladik, Bradbury, S., Schulte, L. A., Helmers, M., Witte, C., Kolpin, D. W., Garrett, J. D., and Harris, M., Neonicotinoid insecticide removal by prairie strips in row-cropped watersheds with historical seed coating use, Agriculture, Ecosystems, and Environment, vol. 241, pp. 160-167, 2017.
M. Perez-Suarez, Castellano, M. J., Kolka, R., Asbjornsen, H., and Helmers, M., Nitrogen and carbon dynamics in prairie vegetation strips across topographical gradients in mixed Central Iowa agroecosystems, Agriculture, Ecosystems, and Environment, vol. 188, p. 11, 2014.
M. J. Helmers, Grudens-Shuck, N., and Youngquist, T. D., Novel Use of Conceptual Change Framework Improves Video on Challenging Science Topic, Journal of Extension, vol. 57, no. 1IAW2, 2019.PDF icon novel_use_of_conceptual_change_framework_improves_video_on_challenging_science_topic.pdf (558.77 KB)
X. Zhou, Helmers, M. J., Asbjornsen, H., Kolka, R., Tomer, M. D., and Cruse, R. M., Nutrient removal by prairie filter strips in agricultural landscapes, Journal of Soil and Water Conservation, vol. 69, pp. 54-64, 2014.
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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.
J. W. Doudna, O'Neal, M. E., Tyndall, J. C., and Helmers, M. J., Perspectives of extension agents and farmers toward multifunctional agriculture in the United States Corn Belt, Journal of Extension, vol. 53, no. 6, 2015.
L. A. Schulte, MacDonald, A. L., Niemi, J. B., and Helmers, M. J., Prairie strips as a mechanism to promote land sharing by birds in industrial agricultural landscapes, Agriculture, Ecosystems, and Environment, vol. http://dx.doi.org/10.1016/j.agee.2016.01.007, 2016.
N. Grudens-Schuck, Helmers, M. J., Youngquist, T. D., and Johnson, M. S., Prairie strips for sediment and nutrient control and biodiversity, Journal of Extension, vol. 55, no. 1, 2017.
L. A. Schulte, Niemi, J., Helmers, M. J., Liebman, M., Arbuckle, J. G., James, D. E., Kolka, R. K., O'Neal, M. E., Tomer, M. D., Tyndall, J. C., Asbjornsen, H., Drobney, P., Neal, J., Van Ryswyk, G., and Witte, C., Prairie strips improve biodiversity and the delivery of multiple ecosystem services from corn–soybean croplands, PNAS, 2017.
E. Heaton, Moore, L. Schulte, Helmers, M., Liebman, M., and Milster, F., Producing food, feed and energy: How can agriculture do it all?, 25th Annual Integrated Crop Management Conference. Iowa State University, Ames, Iowa, 2013.PDF icon producing_food_feed_and_energy_how_can_agriculture_do_it_all_.pdf (2.95 MB)
E. Heaton, Moore, L. Schulte, Helmers, M., Liebman, M., and Milster, F., Producing food, feed and energy: How can agriculture do it all?, 25th Annual Integrated Crop Management Conference. Iowa State University, Ames, Iowa, 2013.PDF icon producing_food_feed_and_energy_how_can_agriculture_do_it_all_.pdf (2.95 MB)