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D. W. Ragsdale, Hodgson, E. W., McCornack, B. P., Koch, K. A., Venette, R. O. B. E. R. T. C., and Potter, B. D., “Soybean aphid and the challenge of integrating recommendations within an IPM system”, Proceedings: Illinois Crop Prot. Technol. Conf., Univ. of Illinois Coop. Ext., Champain-Urbana, IL, pp. 103-110, 2006.
D. W. Ragsdale, McCornack, B. P., Venette, R. C., Potter, B. D., MacRae, I. V., Hodgson, E. W., O'Neal, M. E., Johnson, K. D., O'Neil, R. J., and DiFonzo, C. D., “Economic threshold for soybean aphid (Hemiptera: Aphididae)”, Journal of Economic Entomology, vol. 100, no. 4, pp. 1258-1267, 2007.
A. E. Robertson, Mueller, D. S., Wiggs, S. N., and Hodgson, E. W., “2011 Evaluation of Fungicide and Insecticide Seed Treatments on Soybean in Iowa”, 2012.
A. E. Robertson, Mueller, D. S., Wiggs, S. N., and Hodgson, E. W., “Evaluation of Fungicide and Insecticide Seed Treatments on Soybean at Three Locations in Iowa in 2012”, 2013.
A. E. Robertson, Mueller, D. S., Wiggs, S. N., O'Neal, M. E., and Hodgson, E. W., “Evaluation of Foliar Fungicides and Insecticides on Soybean”, 2011.
A. E. Robertson, Mueller, D. S., Wiggs, S. N., and Hodgson, E. W., “Evaluation of Fungicide and Insecticide Seed Treatments on Soybeans”, 2012.