Wiersma, J. J., and Kandel, H. J. 2004. The response of Fusarium graminearum infected seed of hard red spring wheat to Vitavax Extra RTU and Dividend XL seed treatments. Online. Plant Health Progress doi:10.1094/PHP-2004-0416-01-RS.

Wiersma, J.J. and C.D. Mottberg. 2004. Evaluation of five fungicide application timings for control of leaf spotting diseases and Fusarium Head Blight in Hard Red Spring Wheat. Can. J. Plant Pathol. Vol. 27: 25-27.

Wiersma, J.J., C. Sheaffer, G. Nelson, D. Wyse, K. Betts. 2005. Intercropping Legumes in Hard Red Spring Wheat under Semi-Arid Conditions. Online. Crop Management doi:10.1094/CM-2005-0119-01-RS.

Wiersma, J.J. H. Kandel, and Z. Fore. 2006. The feasibility of winter wheat following soybean in Northern Minnesota. Online. Crop Management doi:10.1094/CM-2006-1110-01-RS.

Martinson B., B.R. Durgan, and J.J. Wiersma. 2007. Wild Oat (Avena fatua L.) control with reduced rates of postemergence herbicides. Online. Crop Management doi:10.1094/CM-2007-0219-02-RS.

Wiersma, J.J. 2007 Development and impact of an extension website. Online. Journal of Extension 45 (5): 5RIB5.

Martinson, K., B.R. Durgan, F. Forcella, J.J. Wiersma, K. Spokas, and D. Archer. 2007. An Emergence Model For Wild Oat (Avena fatua L.). Weed Science (accepted).

Wiersma, J.J., and J.K. Ransom (editors). 2005. Small Grains Field Guide. University of Minnesota Extension Service, St. Paul, MN and North Dakota State University Extension Service, Fargo, ND.  Item # MI-07488-S.

Wiersma, J.J., B.R. Durgan, C. Hollingsworth, I.V. MacRae, and G. Rehm. 2006. Winter Wheat in Minnesota. University of Minnesota Extension Service, St. Paul, MN.  Item #AG-MI 08421.