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F. Workneh, Tylka, G. L., Yang, X. B., Faghihi, J., and Ferris, J. M., ECOLOGY AND POPULATION BIOLOGY-Regional Assessment of Soybean Brown Stem Rot, Phytophthora sojae, and Heterodera glycines Using Area-Frame Sampling: Prevalence and Effects of Tillage, Phytopathology, vol. 89, no. 3, pp. 204-211, 1999.
F. Workneh, Yang, X. B., and Tylka, G. L., Soybean brown stem rot, Phytophthora sojae, and Heterodera glycines affected by soil texture and tillage relations, Phytopathology, vol. 89, no. 10, pp. 844-850, 1999.
F. Workneh, Yang, X. B., and Tylka, G. L., Soybean brown stem rot, Phytophthora sojae, and Heterodera glycines, pp. 844-850, 1999.
F. Workneh, Tylka, G. L., Yang, X. B., Faghihi, J., and Ferris, J. M., Assessment of soybean brown stem rot, Phytophthora sojae, and Heterodera glycines in the north central United States using area-frame sampling: prevalence and effects of tillage, Phytopathology, vol. 89, pp. 204-211, 1999.
F. Workneh, Tylka, G. L., Yang, X. B., Faghihi, J., and Ferris, J. M., Regional assessment of soybean brown stem rot, Phytophthora sojae, and Heterodera glycines using area-frame sampling: Prevalence and effects of tillage, Phytopathology, vol. 89, no. 3, pp. 204-211, 1999.
F. Workneh, Yang, X. B., and Tylka, G. L., Effect of tillage practices on vertical distribution of Phytophthora sojae, Plant disease, vol. 82, no. 11, pp. 1258-1263, 1998.
A. T. S. Wong and Tylka, G. L., Eight nonhost weed species of Heterodera glycines in Iowa, Plant disease, vol. 78, no. 4, pp. 365-367, 1994.
A. T. S. Wong, Tylka, G. L., and Hartzler, R. G., Effects of eight herbicides on in vitro hatching of Heterodera glycines, Journal of nematology, vol. 25, no. 4, p. 578, 1993.
R. N. Wisner and Tylka, G. L., Soybean Rust and the Food Processing Industry, 2005.
S. N. Wiggs and Tylka, G. L., The nature of the relationship between Soybean Cyst Nematode population densities and soil pH, PHYTOPATHOLOGY, vol. 101, no. 6. AMER PHYTOPATHOLOGICAL SOC 3340 PILOT KNOB ROAD, ST PAUL, MN 55121 USA, pp. S191-S191, 2011.
T. Weis, Tylka, G., Hartzler, B., and Heuchelin, S., Inter-Cropping Soybean into Corn (Maize) to Reduce Soybean Cyst Nematode (SCN) Egg Density in a CS Rotation, 2003.
J. Wang, Niblack, T. L., Tremain, J. A., Wiebold, W. J., Tylka, G. L., Marett, C. C., Noel, G. R., Myers, O., and Schmidt, M. E., Soybean cyst nematode reduces soybean yield without causing obvious aboveground symptoms, Plant Disease, vol. 87, no. 6, pp. 623-628, 2003.
J. Wang, Donald, P. A., Niblack, T. L., Bird, G. W., Faghihi, J., Ferris, J. M., Grau, C., Jardine, D. J., Lipps, P. E., and MacGuidwin, A. E., Soybean cyst nematode reproduction in the north central United States, Plant Disease, vol. 84, no. 1, pp. 77-82, 2000.