Golf Course Management

FEB 2018

Golf Course Management magazine is dedicated to advancing the golf course superintendent profession and helping GCSAA members achieve career success.

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02.18 GOLF COURSE MANAGEMENT 85 The RESEARCH SAYS • Plant nutrient deficiencies, ultra-low mow- ing, and excessively wet or dry irrigation programs are critical stress factors that greatly increase the risk for serious damage from anthracnose. • Avoiding deficiencies in nitrogen and potas - sium is critical to reducing anthracnose severity. • The combination of three BMPs (increased nitrogen, higher mowing and greater top - dressing) was the most effective manage- ment regime for suppressing anthracnose to acceptable levels without the use of fungicides. • Routine topdressing is most beneficial under conditions of lower mowing and lower nitro - gen fertilization. • When adjustments in BMPs for anthrac - nose management are needed to enhance playability (ball roll), superintendents can lower the mowing height, as long as greater nitrogen and routine topdressing practices are also employed. • Fungicide efficacy is improved and a reduc - tion in fungicide inputs (as much as 80%) is feasible with the adoption of BMPs. • Early-curative (threshold) sprays can result in significant reductions in fungicide inputs and excellent disease control as long as BMPs are followed. Unraveling evolutionary relationships among the divergent lineages of Colletotrichum causing anthrac - nose disease in turfgrass and corn. Phytopathology 96:46-60. 7. Danneberger, T.K., J.M. Vargas Jr. and A.L. Jones. 1984. A model for weather-based forecasting of anthracnose on annual bluegrass. Phytopathology 74:448-451. 8. Dernoeden, P.H. 2002. Creeping bentgrass manage - ment: Summer stresses, weeds, and selected mala- dies. John Wiley & Sons, Hoboken, N.J. 9. Hempfling, J.W. 2013. Anthracnose of annual blue - grass putting green turf affected by sand topdressing and cultivation. Master's thesis. Rutgers Univer - sity (https://rucore.libraries.rutgers.edu/rutgers- lib/41785/PDF/1/play/) Accessed Jan. 6, 2018. 10. Hempfling, J.W., B.B. Clarke and J.A. Murphy. 2014. Nitrogen fertility and mowing height effects on fun - gicide control of anthracnose. Page 39. In: T. Molnar and B. Fitzgerald, eds. Proceedings of the 23rd Annual Rutgers Turfgrass Symposium. Center for Turfgrass Science, Rutgers University, New Brunswick, N.J. 11. Hempfling, J.W., B.B. Clarke and J.A. Murphy. 2015. Anthracnose disease on annual bluegrass as influenced by spring and summer topdressing. Crop Science 55(1):437-443. 12. Hempfling, J.W., C.J. Schmid, R. Wang, B.B. Clarke and J.A. Murphy. 2017. Best management practices effects on anthracnose disease of annual blue - grass. Crop Science 57:602-610. doi:10.2135/crop sci2016.06.0492 13. Inguagiato, J.C., and K. Guillard. 2016. Foliar N con - centration and reflectance meters to guide N fertiliza- tion for anthracnose management of annual bluegrass putting green turf. Crop Science 56:3328-3337. 14. Inguagiato, J.C., J.A. Murphy and B.B. Clarke. 2008. Anthracnose severity on annual bluegrass influenced by nitrogen fertilization, growth regulators, and ver - ticutting. Crop Science 48:1595-1607. 15. Inguagiato, J.C., J.A. Murphy and B.B. Clarke. 2009a. Anthracnose disease and annual bluegrass putting green performance affected by mowing practices and lightweight rolling. Crop Science 49:1454-1462. 16. Inguagiato, J.C., J.A. Murphy and B.B. Clarke. 2009b. Anthracnose of annual bluegrass putting green turf influenced by trinexapac-ethyl application interval and rate. International Turfgrass Society Research Journal 11:207-218. 17. Inguagiato, J.C., J.A. Murphy and B.B. Clarke. 2010. Anthracnose development on annual bluegrass affected by seedhead and vegetative growth regula - tors. Applied Turf Science doi:10.1094/ATS-2010- 0923-01-RS 18. Inguagiato, J.C., J.A. Murphy and B.B. Clarke. 2012. Sand topdressing rate and interval effects on anthracnose severity of an annual bluegrass putting green. Crop Science 52:1406-1415. doi:10.2135/crop sci2011.01.0010 19. Inguagiato, J.C., J.A. Murphy and B.B. Clarke. 2013. Topdressing sand particle shape and incorporation effects on anthracnose severity of an annual bluegrass putting green. International Turfgrass Society Research Journal 12:127-133. 20. Landschoot, P., and B. Hoyland. 1995. Shedding some light on anthracnose basal rot. Golf Course Manage - ment 11:52-55. 21. Mann, R.L., and A.J. Newell. 2005. A survey to deter - mine the incidence and severity of pests and diseases on golf course putting greens in England, Ireland, Scotland, and Wales. International Turfgrass Society Research Journal 10:224-229. 22. Murphy, J., J. Inguagiato and B. Clarke. 2012. Best management practices for anthracnose on annual bluegrass: Using the correct cultural practices can lessen the severity of anthracnose disease on annual bluegrass. Golf Course Management 80(5):104-110. 23. Murphy, J., F. Wong, L. Tredway, J.A. Crouch, J. Inguagiato, B. Clarke, T. Hsiang and F. Rossi. 2008. Best management practices for anthracnose on annual bluegrass turf. Golf Course Management 76(8):93- 104. 24. Roberts, J.A., J.C. Inguagiato, B.B. Clarke and J.A. Murphy. 2011. Irrigation quantity effects on anthrac - nose disease of annual bluegrass. Crop Science 51:1244-1252. doi:10.2135/cropsci2010.07.0444 25. Roberts, J.A., and J.A. Murphy. 2014. Anthracnose disease on annual bluegrass as affected by foot traffic and sand topdressing. Plant Disease 98:1321-1325. doi:10.1094/PDIS-08–13–0877-RE 26. Roberts, J.A., J.A. Murphy and B.B. Clarke. 2012. Lightweight rolling effects on anthracnose of annual bluegrass putting greens. Agronomy Journal 104:1176-1181. doi:10.2134/agronj2011.0269 27. Schmid, C.J. 2016. Influence of nutrient management and soil pH on anthracnose severity of annual blue - grass putting green turf. Ph.D. dissertation. Rutgers University (https://rucore.libraries.rutgers.edu/rutgers- lib/51457/) Accessed Jan. 6, 2018. 28. Schmid, C.J., B.B. Clarke and J.A. Murphy. 2017. Anthracnose severity and annual bluegrass qual - ity as influenced by nitrogen source. Crop Science 57:S-285-S-292. doi:10.2135/cropsci2016.06.0494 29. Smiley, R.W., P.H. Dernoeden and B.B. Clarke. 2005. Compendium of turfgrass diseases. 3rd ed. APS Press, St. Paul, Minn. 30. Sprague, H.B., and E.E. Evaul. 1930. Experiments with turfgrasses in New Jersey. New Jersey Agriculture Experiment Station Bulletin 497:1-55. 31. Vargas, J.M., and A.J. Turgeon. 2003. Poa annua: Physiology, culture, and control of annual bluegrass. John Wiley & Sons, Hoboken, N.J. 32. Vincelli, P., B.B. Clarke and G. Munshaw. 2017 Chemi - cal control of turfgrass diseases 2017. Kentucky and Rutgers Cooperative Extension Joint Publication PPA-1 33. Wang, R. 2015. Impact of sand topdressing on turf quality, surface physical properties and disease sever - ity of putting green turfs. Master's thesis, Rutgers Uni- versity. (https://rucore.libraries.rutgers.edu/rutgers- lib/48711/PDF/1/play/) Accessed Jan. 6, 2018. 34. Wong, F.P., and S. Midland. 2004. Fungicide-resistant anthracnose: bad news for greens management. Golf Course Management 72(6):75-80. James Murphy (jamurphy@njaes.rutgers.edu) is an Exten - sion specialist in turfgrass management and Bruce Clarke is director of the Center for Turfgrass Science and an Exten - sion specialist in turfgrass pathology in the Department of Plant Biology at Rutgers, The State University of New Jer - sey, New Brunswick, N.J. John Inguagiato is an associate professor in turfgrass pathology in the Department of Plant Science and Landscape Architecture at the University of Connecticut, Storrs.

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