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G. L. Tylka, Spring Sampling Not Recommended for Nematodes on Corn—Except for Sandy Fields, 2012.
G. Tylka, Sample fields this fall for SCN to figure out 2007 or plan for 2008, Integrated crop management, 2007.
G. L. Tylka, Nematode-protectant seed treatments: New options for nematode management in row crops, PHYTOPATHOLOGY, vol. 103, no. 6. AMER PHYTOPATHOLOGICAL SOC 3340 PILOT KNOB ROAD, ST PAUL, MN 55121 USA, pp. 174-174, 2013.
G. Tylka, Check Fields for Soybean Cyst Nematode, Integrated crop management news, 2008.
G. L. Tylka, McCarville, M. T., Marett, C. C., Gebhart, G. D., Soh, D. H., Mullaney, M. P., and O'Neal, M. E., DIRECT COMPARISON OF SOYBEAN CYST NEMATODE REPRODUCTION ON RESISTANT SOYBEAN VARIETIES IN GREENHOUSE AND FIELD EXPERIMENTS, JOURNAL OF NEMATOLOGY, vol. 45, no. 4. SOC NEMATOLOGISTS PO BOX 311, MARCELINE, MO 64658 USA, pp. 322-323, 2013.
G. L. Tylka, Yield losses of Heterodera glycines-resistant soybean cultivars in Iowa in 1996, J. Nematol, vol. 29, p. 610, 1997.
G. L. Tylka, Sanogo, C., and Souhrada, S. K., Relationships among Heterodera glycines population densities, soybean yields, and soil pH, J. Nematol, vol. 30, pp. 519-520, 1998.
G. L. Tylka, of Soybean Cyst Nematode Field Guide Available, 2012.
G. Tylka, Nematodes in corn production: A growing problem, Integrated crop management, 2007.
G. L. Tylka, A 10-Year Summary of Testing for Nematodes that Feed on Corn in Iowa, 2011.
G. Tylka, Sample now for most corn nematodes, Integrated Crop Management, 2007.
G. L. Tylka and Flynn, P., Interpreting SCN soil sample results/; prepared by Gregory L. Tylka and Paula Flynn., IPM 61, 1999.
G. L. Tylka, Gebhart, G. D., Marett, C. C., and Mullaney, M. P., Evaluation of Soybean Varieties Resistant to Soybean Cyst Nematode, 2011.
G. L. Tylka, Gebhart, G. D., and Marett, C. C., Evaluation of soybean varieties resistant to soybean cyst nematode in Iowa, Iowa State University IPM Bulletin, vol. 52, 2002.
G. L. Tylka, Hussey, R. S., and Roncadori, R. W., Axenic germination of vesicular-arbuscular mycorrhizal fungi: effects of selected Streptomyces species, Phytopathology, vol. 81, no. 7, pp. 754-759, 1991.
G. Tylka, Winter annual weeds and SCN: What's the connection, Integrated crop management, 2007.
G. Tylka, Soybean Cyst Nematode Females now Apparent on Soybean Roots, Integrated crop management news, 2008.
G. L. Tylka, Trial Results Show Dual Benefits of SCN Resistance, 2014.
G. Tylka, Soh, D., and Coats, J., Glucosinolate breakdown products for management of Heterodera glycines, J. Nematol, vol. 609, 1997.
G. L. Tylka, Possible Breakdown of SCN Resistance Topic of New Webcast, 2012.
G. Tylka, Soybean cyst nematode: Still a major threat to soybean production, Integrated crop management, 2007.
G. L. Tylka, 2012 Season is Not a Good One to “Roll the Dice” with SCN, 2012.
G. Tylka, Results of SCN-resistant soybean variety testing become available, Integrated crop management, 2007.
G. L. Tylka, Management of Nematode Diseases: Options, in Encyclopedia of Plant and Crop Science, Taylor & Francis, 2004, pp. 684-688.
G. Tylka, new take on soil sampling fields for SCN, Integrated crop management, 2007.
G. L. Tylka, Da Silva, M. Batista, R Saeugling, A., and Marlay, S., Effects of Nematode-Protectant Seed Treatments on Corn Yields and Nematode Population Densities, 2011.
G. L. Tylka, Soybean cyst nematode-resistant soybean varieties for Iowa. PM 1649. Iowa State Univ, Ext. Serv., Ames. Soybean cyst nematode-resistant soybean varieties for Iowa. PM, vol. 1649, Submitted.
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.
G. L. Tylka, SCN Females Already Seen on Soybean Roots, 2013.
G. L. Tylka, Gebhart, G. D., and Marett, C. C., Iowa 2005 soybean cyst nematode-resistant soybean variety trial results, Crop Manage, 2003.
G. L. Tylka and Hunter, B. B., QUANTITATIVE RECOVERY OF CYLINDROCLADIUM-SCOPARIUM FROM NURSERY SOILS IN PENNSYLVANIA, PHYTOPATHOLOGY, vol. 75, no. 5. AMER PHYTOPATHOLOGICAL SOC 3340 PILOT KNOB ROAD, ST PAUL, MN 55121, pp. 629-629, 1985.
G. L. Tylka, Stunted, Yellowing or Wilting Corn: Could Nematodes Be the Cause?, 2012.
G. Tylka, SCN-resistant soybean varieties: Not all are created equal, Integrated crop management, 2007.
G. L. Tylka, Da Silva, M. Batista, and Pecinovsky, K. T., Effects of Seed Treatments and a Soil-applied Nematicide on Corn Yields and Nematode Population Densities, 2012.
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.
G. L. Tylka, Comparing Nematode Management Products on Corn in Strip Trials, 2011.
G. Tylka, Fall is Ideal Time to Check for Presence of SCN, Integrated crop management news, 2008.
G. Tylka, It is Time to Sample for Corn Nematodes, Integrated crop management news, 2009.
G. L. Tylka, Todd, T. C., Niblack, T. L., MacGuidwin, A. E., and Jackson, T., Sampling for Plant-parasitic Nematodes in Corn Strip Trials Comparing Nematode Management Products, Submitted.
G. Tylka, A biorational approach to soybean cyst nematode management in Iowa, Leopold Center Progress Reports, vol. 3, pp. 41-44, 1994.
G. L. Tylka, Niblack, T. L., Walk, T. C., Harkins, K. R., Barnett, L., and Baker, N. K., Flow cytometric analysis and sorting of Heterodera glycines eggs, Journal of nematology, vol. 25, no. 4, p. 596, 1993.
G. L. Tylka, Symptoms of SCN Damage Apparent Early, Yield Loss Likely Great in 2012, 2012.
G. Tylka, Winter Annual Weeds and SCN–Is There Cause for Concern, Integrated crop management news, 2008.
G. L. Tylka and da Silva, M. Batista, Effects of Seed Treatments and a Soil-applied Nematicide on Iowa Corn Yields and Nematode Population Densities—2011, 2012.
G. Tylka, Now is the Time to Sample for Corn Nematodes, Integrated crop management news, 2008.
G. L. Tylka, Managing Soybean Cyst Nematode for Maximum Soybean Productivity, 2008 Illinois Crop Protection Technology Conference, p. 7, Submitted.
G. Tylka, Spring Sampling OK for Two Corn Nematode Species, Integrated crop management news, 2008.
G. Lee Tylka, Interactions of vesicular-arbuscular mycorrhizal fungi with Heterodera glycines and soil actinomycetes, University of Georgia, 1990.
G. L. Tylka and Marett, C. C., Distribution of the Soybean Cyst Nematode, Heterodera glycines, in the United States and Canada: 1954 to 2014, Plant Health Progress, no. doi:10.1094/PHP-BR-14-0006, 2014.
G. L. Tylka, Hundreds of SCN-resistant Soybean Varieties Available for 2014, 2014.

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