Publications

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2010
G. Tylka, Corn Nematodes and Soybean Cyst Nematode: Similar But Very Different, Integrated crop management news, 2010.
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.
M. M. Arias, Tylka, G., Leandro, L., and Munkvold, G., Effects of soybean cyst nematode infestation and resistance on Fusarium root rot on soybeans, Phytopathology, vol. 100, no. 6. AMER PHYTOPATHOLOGICAL SOC 3340 PILOT KNOB ROAD, ST PAUL, MN 55121 USA, pp. S30-S30, 2010.
G. L. Tylka, Gebhart, G. D., Marett, C. C., and Mullaney, M. P., Evaluation of Soybean Varieties Resistant to Soybean Cyst Nematode in Iowa--2008. Iowa State University University Extension, 2010.
L. J. Giesler, Bradley, C., Dorrance, A., Niblack, T., Tylka, G., Jardine, D., Malvick, D., Sweets, L., Markell, S., and Osborne, L., Improving management of soybean cyst nematode through extension demonstration and outreach, PHYTOPATHOLOGY, vol. 100, no. 6. AMER PHYTOPATHOLOGICAL SOC 3340 PILOT KNOB ROAD, ST PAUL, MN 55121 USA, pp. S185-S185, 2010.
G. L. Tylka, MAXIMIZING EFFECTIVENESS OF EXTENSION EDUCATION EFFORTS, JOURNAL OF NEMATOLOGY, vol. 42, no. 3. SOC NEMATOLOGISTS PO BOX 311, MARCELINE, MO 64658 USA, pp. 274-275, 2010.
G. L. Tylka, Gebhart, G. D., and Marett, C. C., Performance of SCN-resistant soybean varieties in fields infested with different soybean cyst nematode HG types, PHYTOPATHOLOGY, vol. 100, no. 6. AMER PHYTOPATHOLOGICAL SOC 3340 PILOT KNOB ROAD, ST PAUL, MN 55121 USA, pp. S190-S190, 2010.
J. L. Rotundo, Tylka, G. L., and Pedersen, P., Source of Resistance Affect Soybean Yield, Yield Components, and Biomass Accumulation in-Infested Fields, Crop science, vol. 50, no. 6, pp. 2565-2574, 2010.
D. Mueller, Robertson, A., Sisson, A., and Tylka, G., Soybean Diseases. Iowa State University University Extension, 2010.
2009
G. Tylka, Check SCN Resistant Soybean Roots for SCN Females, Integrated crop management news, 2009.
G. Tylka, Common corn nematode characteristics, Integrated crop management news, 2009.
G. L. Tylka and Marett, C. C., Comparing Yields of Soybean Varieties with Different Sources of SCN Resistance in Strip Trials, 2009.
G. Tylka, Fall Is Great Time to Sample For SCN, But Not Corn Nematodes, Integrated crop management news, 2009.
G. Tylka, It is Time to Sample for Corn Nematodes, Integrated crop management news, 2009.
T. Niblack, Tylka, G., Arelli, P., Bond, J., Diers, B., Donald, P., Faghihi, J., Ferris, V., Gallo, K., and Heinz, R., Proposal for a Standard Greenhouse Method for Assessing Soybean Cyst Nematode Resistance in Soybean: SCE08 (Standardized Cyst Evaluation 2008), Soybean Rust Workshop, pp. 78-79, 2009.
G. Tylka, Quick facts About Corn Nematodes, Integrated crop management news, 2009.
M. Studham, MacIntosh, G. C., Avendaño, F., Soh, D., and Tylka, G. L., The soybean resistance gene Rag1 does not protect against soybean cyst and root-knot nematodes, Plant Health Progress, no. April, 2009.
N. P. Rogovska, Blackmer, A. M., and Tylka, G. L., Soybean yield and soybean cyst nematode densities related to soil pH, soil carbonate concentrations, and alkalinity stress index, Agronomy journal, vol. 101, no. 5, pp. 1019-1026, 2009.
T. Niblack, Tylka, G. L., Arelli, P., Bond, J., Diers, B., Donald, P., Faghihi, J., Ferris, V. R., Gallo, K., and Heinz, R. D., A standard greenhouse method for assessing soybean cyst nematode resistance in soybean: SCE08 (Standardized Cyst Evaluation 2008), Plant Health Progress doi, vol. 10, 2009.
2008
G. Tylka, Be Careful with Susceptible Soybean Variety in Rotation to Manage SCN, Integrated crop management news, 2008.
G. Tylka, Check Fields for Soybean Cyst Nematode, Integrated crop management news, 2008.
G. L. Tylka and Marett, C. C., Comparing Yields and Nematode Control of Soybean Varieties with Different Sources of SCN Resistance in Strip Trials, 2008.
A. E. Robertson, Mueller, D., and Tylka, G. Lee, Corn Diseases. Iowa State University, Extension and Outreach, 2008.
G. Tylka and Marett, C., Effects of N-Hibit Seed Treatment on Soybean Yields–2008 Iowa Research, Integrated crop management news, 2008.
G. Tylka, Fall is Ideal Time to Check for Presence of SCN, Integrated crop management news, 2008.
G. Tylka, Now is the Time to Sample for Corn Nematodes, Integrated crop management news, 2008.
I. A. Zasada, Avendaño, F., Li, Y. C., Logan, T., Melakeberhan, H., Koenning, S. R., and Tylka, G. L., Potential of an alkaline-stabilized biosolid to manage nematodes: case studies on soybean cyst and root-knot nematodes, Plant Disease, vol. 92, no. 1, pp. 4-13, 2008.
D. V. Charlson, Harkins, K. R., and Tylka, G. L., Relationship between juvenile hatching and acridine orange fluorescence of Heterodera glycines eggs, Nematology, vol. 10, no. 5, pp. 603-610, 2008.
G. Tylka, SCN Confirmed for First Time in Lyon County, Integrated crop management news, 2008.
G. Tylka, Soil Sample Results Can Reveal if SCN Management is Working, Integrated crop management news, 2008.
G. Tylka, Soybean cyst nematode confirmed in Ida County in 2008, Integrated crop management news, 2008.
G. Tylka, Soybean Cyst Nematode Females now Apparent on Soybean Roots, Integrated crop management news, 2008.
G. L. Tylka, Soybean cyst nematode management field guide, 2008.
G. Tylka, Spring Sampling OK for Two Corn Nematode Species, Integrated crop management news, 2008.
G. Tylka, Winter Annual Weeds and SCN–Is There Cause for Concern, Integrated crop management news, 2008.
2007
A. Robertson and Tylka, G. L., Building the" Rust Fast Track System" for Identifying Asian Soybean Rust in Iowa, Journal of Extension, vol. 45, no. 3, 2007.
G. L. Tylka, Current status of the soybean cyst nematode as a threat to soybean production in the Midwest, Proc. 18th Annual Integrated Crop Management Conf., Ames, IA, pp. 28-29, 2007.
W. L. Gavassoni, Tylka, G. L., and Munkvold, G. P., Effects of tillage practices on dissemination and spatial patterns of Heterodera glycines and soybean yield, Plant disease, vol. 91, no. 8, pp. 973-978, 2007.
G. Tylka and Marett, C., Field testing of N-Hibit seed treatment in 2007 for management of SCN in Iowa, Integrated crop management, 2007.
G. M. Tabor, Tylka, G. L., and Bronson, C. R., Genotype B of Cadophora gregata reduces quantity and quality of soybean yield, Phytopathology, vol. 97, no. 7. AMER PHYTOPATHOLOGICAL SOC 3340 PILOT KNOB ROAD, ST PAUL, MN 55121 USA, pp. S113-S113, 2007.
G. M. Tabor, Tylka, G. L., and Bronson, C. R., Genotypes A and B of Cadophora gregata differ in ability to colonize susceptible soybean, Plant disease, vol. 91, no. 5, pp. 574-580, 2007.
G. Tylka, Nematodes in corn production: A growing problem, Integrated crop management, 2007.
G. Tylka, New cyst nematode species on corn, Integrated crop management, 2007.
G. Tylka, new take on soil sampling fields for SCN, Integrated crop management, 2007.
G. Tylka, Results of SCN-resistant soybean variety testing become available, Integrated crop management, 2007.
G. Tylka, Sample fields this fall for SCN to figure out 2007 or plan for 2008, Integrated crop management, 2007.
G. Tylka, Sample now for most corn nematodes, Integrated Crop Management, 2007.
G. Tylka, SCN females on roots signal infestations and possibly ineffectiveness of resistance, Integrated crop management, 2007.
G. Tylka, SCN-resistant soybean varieties: Not all are created equal, Integrated crop management, 2007.
V. Lawson, Tylka, G. L., Marett, C. C., and Gebhart, G. D., SCN-Resistant Soybean Variety Trial, 2007.

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