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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., 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., 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, 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.
G. L. Tylka and Flynn, P., Interpreting SCN soil sample results. Iowa State University, University Extension, 1999.
G. L. Tylka and Flynn, P., Interpreting SCN soil sample results/; prepared by Gregory L. Tylka and Paula Flynn., IPM 61, 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, 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.