Fischer, D. R. G. Harvey, T. Bauman, S. Phillips, S. Hart, G. Johnson, J. Kells, P. Westra, J. Lindquist. 2004. Common lambsquarters (Chenopodium album) interference with corn across the North central United States. Weed Sci. 52: 1034-1038.

Vetter, S.A., S. Chen, D.L. Wyse, G.A. Johnson, and P.M. Porter. 2004. Effect of rotation crops on Heterodera glycines population density in a preliminary green house study. J. Nematology 36:351.

Banerjee, S., G. Johnson, N. Schneider, and B. Durgan. 2005. Modeling Replicated Weed Growth Using Spatially Varying Growth Curves. Environmental and Ecological Statistics.  12:357-377.

Adam S. Davis, John Cardina, Frank Forcella, Gregg A. Johnson, George Kegode, John L. Lindquist, Edward C. Luschei, Karen A. Renner, Christy L. Sprague, Martin M. Williams. 2005. Environmental factors affecting seed persistence of annual weeds across the U.S. corn belt. Weed Sci. 53: 860-868.

D.R. Miller, S. Y. Chen, P.M. Porter, G.A Johnson, D.L. Wyse, S.R. Stetina, L.D. Klossner, and G.A. Nelson. 2005. Rotation Crop Evaluation for Management of the Soybean Cyst Nematode in Minnesota. Agron. J.  98:569-578.

Hoverstad, T.R., G.A. Johnson, J.L. Gunsolus, and R.P. King. 2006. Evaluating the Economic Risk of Herbicide-Based Weed Management Systems in Corn and Soybean Using Stochastic Dominance Testing. Weed Technol. 2:422-429.

Banerjee, S. and G. Johnson. 2006. Coregionalized single- and multiple-resolution spatially varying growth curve modeling with application to weed growth. Biometrics. 864-876.

Hoverstad, T.R., G.A. Johnson, J.L. Gunsolus, and R.P. King. 2006. Evaluating the Economic Risk of Herbicide-Based Weed Management Systems in Corn and Soybean Using Stochastic Dominance Testing. Weed Technol. 2:422-429.