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J. O. Paz, Batchelor, W. D., Tylka, G. L., and Hartzler, R. G., A modeling approach to quantify the effects of spatial soybean yield limiting factors, Transactions of the ASAE, vol. 44, no. 5, pp. 1329-1334, 2001.
J. O. Paz, Batchelor, W. D., and Tylka, G. L., Method to use crop growth models to estimate potential return for variable-rate management in soybeans, Transactions of the ASAE, vol. 44, no. 5, pp. 1335-1341, 2001.
P. Pedersen and Tylka, G., Soybean cyst nematode and nematicide affect growth pattern of various soybean varieties in Iowa., JOURNAL OF NEMATOLOGY, vol. 39, no. 1. SOC NEMATOLOGISTS PO BOX 311, MARCELINE, MO 64658 USA, pp. 98-98, 2007.
P. Pedersen, Tylka, G. L., Mallarino, A., MacGuidwin, A. E., Koval, N. C., and Grau, C. R., Correlation between Soil pH, Population Densities, and Soybean Yield, Crop science, vol. 50, no. 4, pp. 1458-1464, 2010.
R. N. Perry, Beane, J., Marett, C. C., and Tylka, G. L., Comparison of the rate of embryogenic development of Globodera rostochiensis and G. pallida using flow cytometric analysis, Nematology, vol. 4, no. 4, pp. 553-555, 2002.
C. J. Peterson, Zhao, S. H., Tylka, G. L., and , Cyanohydrins as nematode hatch inhibitors and weed germination inhibitors., ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, vol. 220. AMER CHEMICAL SOC 1155 16TH ST, NW, WASHINGTON, DC 20036 USA, pp. U50-U50, 2000.