Project Activities

Press Releases | Project Reports | Symposia Organized and Moderated | Extension and Outreach Presentations | Extension Articles |
Select Scientific Publications
| Theses & Dissertations | Conference Proceedings | Abstracts

Press Releases

Project Reports

Symposia Organized and Moderated

Symposium at the 18th International Plant Protection Congress
(Berlin, Germany, August 26, 2015)

“Plant Disease and Irrigation” (Moderator: Chuan Hong, Virginia Tech, USA, and Walter Wohanka, Geisenheim University, Germany)

Symposium at the 7th International IPM Symposium
(Memphis, TN - March 27, 2012)

“Plant Health Management in a Thirty World” (Moderator: Chuan Hong, Virginia Tech, Virginia Beach, VA, USA)

Extension and Outreach Presentations

in addition to the Webinar Series

  1. Hong, C. X. 2016. Building pathogen mitigation features into recycling irrigation systems. APS Potomac Division Meeting/ Pro-active Management of Specialty Crop Pathogens Using Systems-based Approaches Symposium, Richmond, VA, March 23 to 25, 2016
  2. Hong, C. X.  2016.  Plant health science and innovation in the 21st century. Office of National Programs, USDA Agricultural Research Service, Beltsville, MD, August 5, 2016
  3. Hong, C. X.  2016. Recycled irrigation water quality dynamics and implications for crop health and production. The 41st Annual Conference of International Plant Propagators Society – Southern Region of North America, Virginia Beach, VA, October 22 to 26, 2016
  4. Ferraro, N., Bosch, D. J., and Pease, J. 2015. Economic analysis of recapturing and recycling irrigation on container horticultural nurseries. Southern Nursery Growers’ Association. Atlanta, Georgia. July 21, 2015.
  5. Hong, C. X. 2015. Specialty crop science and technology in the 21st century. Office of National Programs, USDA Agricultural Research Service, Beltsville, MD, May 22, 2015
  6. Hong, C. X. 2015. Integrated pest management in the 21st century. University of California, Davis, CA, July 21, 2015
  7. Hong, C. X. 2015. Revisit the notion of Phytophthora species as water molds. The 1st International Soilborne Oomycetes Conference, Duck Key, FL, December 8 to 10, 2015
  8. Kong, P., and Hong, C. X.  2015.  Genetic diversity and abundance of cyanobacteria and associated microbial communities in agricultural runoff containment reservoirs.  Phytobiomes 2015: Designing a New Paradigm for Crop Improvement, Washington, DC, June 29 to July 2, 2015
  9. Kong, P., Richardson, P. A., Yang, X, Zhang, H. B., Ghimire, S. R., Moorman, G. W., Lea-Cox, J. D., Copes, W. E., Ross, D. R., Ristvey, A. G., Boyle, K. J., Bosch, D., Pease, J., and Hong, C. X. 2015. Building crop health into water recycling. The 18th International Plant Protection Congress, Berlin, Germany, August 24 to 27, 2015
  10. Yang, X., and Hong, C. X.  2015.  Comparative analysis of oomycete diversity between water and sediment in a runoff water sedimentation reservoir in Virginia. Phytobiomes 2015: Designing a New Paradigm for Crop Improvement, Washington, DC, June 29 to July 2, 2015
  11. Kong, P., Richardson, P. A., Yang, X, Zhang, H. B., Ghimire, S. R., Copes, W. E., Moorman, G. W., Lea-cox, J. D., and Hong, C. X.  2014. Biology of Phytophthora species in aquatic ecosystems. The 7th IUFRO Working Party 7.02.09 on Phytophthora in Forests and Natural Ecosystems. Esquel, Chubut, Argentina, November 10 to 14, 2014
  12. Yang, X., Cope, W. E., and Hong, C. X.  2014. Phytophthora species found in irrigation systems and their risk assessments. The 19th Ornamental Workshop on Diseases and Insects, Hendersonville, NC, September 29 to October 3, 2014
  13. Yang, X., Tyler, B. M., and Hong, C. X.  2014. A multi-locus phylogeny for the genus Phytophthora.  The 7th IUFRO Working Party 7.02.09 on Phytophthora in Forests and Natural Ecosystems. Esquel, Chubut, Argentina, November 10 to 14, 2014
  14. Hong, C. X.  2013.  Making the most out of the agricultural chemical dollars. Eastern Shore Agricultural Conference, Belle Haven, VA, January 4, 2013
  15. Hong, C. X.  2013.  Plant health management in a thirsty world. Department of Molecular Biology and Chemistry, Christopher Newport University, Newport News, VA, February 22, 2013
  16. Hong, C. X. 2013.  Treasure hunt in agricultural runoff water containment basins, Recent Advancements in Biological Control session of APS Potomac Division Meeting, Shepherdstown, WV, April 4, 2013
  17. Hong, C. X.  2013.  Getting down to the basics with Phytophthora. Beech Summit, Longwood Garden, Kennett Square, PA, April 5, 2013
  18. Hong, C. X. 2013.  Recycled water quality dynamics and implications for ornamental horticultural crop health and production.  Horticulture Department, Virginia Tech, Blacksburg, VA, May 6, 2013
  19. Hong, C. X. 2013.  Water dispersal of Phytophthora species. Department of Plant Pathology and Plant-Microbe Biology, Cornell University, Ithaca, NY, June 26, 2013
  20. Hong, C. X. 2013.  Recycling irrigation system – a focal point of plant biosecurity and agricultural water sustainability in the 21st century. EITC: Precision Agriculture – Future Challenges and Directions.  Ithaca, NY, June 27, 2013
  21. Hong, C. X.  2013.  Water treatment updates. VNLA Field Day, Gloucester, VA, August 8, 2013
  22. Hong, C. X.  2013.  Recycled water quality dynamics and implications for crop health. Water Management for Ornamental Crops Workshop, Virginia Beach, VA, October 29, 2013
  23. Moorman, G. W. 2013.  Plant pathogens in irrigation water. Northwestern Pennsylvania Greenhouse Seminar. Erie, PA. February 21, 2013
  24. Kong, P., Cafà, G., Hao, W., Yang, X., Ghimire, S., Richardson, P. A., and Hong, C. X. 2013.  Irrigation systems for crop health, water security and environmental sustainability. VNLA Field Day, Gloucester, VA, August 8, 2013
  25. Hong, C. X.  2012.  Water dispersal of plant pathogens in a thirsty world. University of Hertfordshire. United Kingdom. April 27, 2012
  26. Hong, C. X.  2012.  Controlling Phytophthoras in surface water sources. American Nursery and Landscape Association Grower/Distribution Tour. Suffolk, VA, September 20, 2012
  27. Moorman, G. W.  2012.  Root rots and their management. Central Susquehanna Vegetable and Greenhouse Meeting. Mifflinburg, PA. January 24, 2012
  28. Moorman, G. W.  2012.  Plant pathogens in irrigation water. Western PA Spring Greenhouse Night-Lighter. North Belle Vernon, PA.  March 22, 2012
  29. Hong, C. X.  2011.  Irrigation pathogen mitigation without water treatment.  36th Annual Conference of the International Plant Propagators Society - Southern Region of North America. Valdosta, GA. October 24, 2011
  30. Lea-Cox, J. D. 2011. Project design with the end in mind.  Graduate Student Workshop.  108th Annual American Society for Horticulture Science Conference. Waikoloa, HI. September 26, 2011
  31. Lea-Cox, J.D. 2011. Visualizing and interpreting large sensor datasets for daily specialty crop management decisions. Computer Applications in Horticulture Workshop. 108th Annual American Society for Horticulture Science Conference. Waikoloa, HI, September 26, 2011
  32. Lea-Cox, J.D. 2011.  What is the big picture with water and its availability? How can you cope with the future water needs?  2011 Pest Management Conference.  Carroll Community College, Westminster, MD, December 1, 2011
  33. Majsztrik, J., Lea-Cox, J. D., Ross, D. S., and Ristvey, A. G. 2011.  Sustainable nursery production: choosing the management practices that fit your nursery.  Advanced Nutrient Management Twilight Session.  Wye Research and Education Center, Queenstown, MD, September  14, 2011
  34. Moorman, G. W.  2011. Harbors of plant pathogens in greenhouses. Flowers Canada. Niagara Falls, Ontario, Canada,  September 4, 2011
  35. Moorman, G. W.  2011. Disease diagnosis workshop. Flowers Canada. Niagara Falls, Ontario, Canada, September 4, 2011
  36. Moorman, G. W.  2011.  Oomycetes in irrigation water: Challenges and opportunities. Northeastern Division-American Phytopathological Society annual meeting symposium. New Brunswick, NJ, October 13, 2011

Extension Articles

SCRI Project Update Series I – Recycled Water Quality

  1. Hong, C. X.  2016.  Understanding recycled water quality.  Connect (in press)
  2. D'Alessio, N., Hartter, D., Boyle, K. J., Bosch, D. J., and Pease, J.  2015.  Adding value to ornamental plants.  American Nurseryman (January):16-18.
  3. Hong, C. X.  2015.  Keep it clean – new research provides an improved protocol for chlorine water treatment practices. The March 2015 issue of Nursery Management (page 22-24) at NurseryMag.com
  4. Hong, C. X.  2015.  Irrigation water quality for a sustainable green industry. Virginia Nursery and Landscape Association (VNLA) Newsletter 85(4):51
  5. Rees, G., Cultice, A., Pease, J., Bosch, D. J., and Boyle, K. J.  2015. Irrigation systems and practices in Mid-Atlantic nurseries.  American Nurseryman (February):14-19
  6. Rees, G., Cultice, A., Pease, J., Bosch, D. J., and Boyle, K. J.  2015. Disease management issues and practices in Mid-Atlantic nurseries.  American Nurseryman (March):20-24
  7. Hong C. X. 2014. Water reuse and recycle. The July 2014 issue of Nursery Management (page 56) at NurseryMag.com
  8. Hong, C. X.  2014.  Three reasons to irrigate plants in the early to mid-morning. VNLA Newsletter 84(1):66-68
  9. Hong, C. X.  2013.  Recycled water quality and management implications. VNLA Newsletter  83(3):55-56
  10. Hong, C. X.  2013.  Water pH dictates chlorine performance. VNLA Newsletter 83 (4):58-60
  11. Yang, X., Richardson, P. A., Kong, P., Olson, H. A., and Hong, C. X.  2013.  New pathogens causing root and stem rot of Begonia. VNLA Newsletter 83(2):46-48

Other Topics

  1. Yang, X., Richardson, P. A., Kong, P., Olson, H. A., and Hong, C. X.  2013.  New pathogens causing root and stem rot of Begonia. VNLA Newsletter 83(2):46-48

Online Knowledge Center: Irrigation Water Management for Ornamental Horticulture Under the eXtension Environment at http://campus.extension.org/course/view.php?id=301

Learning modules

  1. Copes, W. E.  2016.  Is chlorine dioxide a viable alternative disinfectant for chlorine gas?
  2. Hong, C. X.  2016.  Where should I build my new production facility for crop health?
  3. Hong, C. X.  2016.  How may layout of a recycling irrigation system affect pathogen risk?
  4. Hong, C. X.  2016.  How to make the most out of my chlorination dollars?
  5. Hong, C. X.  2016.  How may water quality in containment ponds change and what does it mean to my crops?
  6. Hong, C. X.  2016.  What are my options in managing irrigation water pH?
  7. Lea-Cox, J.  2016.  How should I manage irrigation and surface water for pathogen risk mitigation?
  8. Moorman, G. W.  2016.  What plant pathogens could be in my water?
  9. Moorman, G. W.  2016.  How do plant pathogens enter irrigation systems and move around?
  10. Moorman, G. W.  2016.  How can I determine whether my water is clean or contaminated?
  11. Moorman, G. W.  2016.  What are current water treatments for greenhouse production?
  12. Pease, J.  2016.  What are my economic perspectives of capturing and reuse of runoff water for irrigation?
  13. Ristvey, A.  2016.  Why is substrate management vital for pathogen risk mitigation?

Fact sheets

  1. Copes, W. E., Yang, X., and Hong, C. X. 2015. Well water can be free of Phytophthora species. SCRI Project Factsheet – Pathogen Mitigation Series #5.
  2. Kong, P., Zhang, H. B., and Hong, C. X.  2015.  Water pH dynamics and implications for pathogen management in recycling irrigation ponds. SCRI Project Factsheet – Pathogen Mitigation Series #2
  3. Kong, P., Zhang, H. B., and Hong, C. X.  2015.  Dissolved oxygen dynamics and implications for pathogen management in recycling irrigation ponds.  SCRI Project Factsheet – Pathogen Mitigation Series #3
  4. Kong, P., Zhang, H. B., and Hong, C. X.  2015.  Electrical conductivity dynamics and implications for pathogen management in recycled irrigation water. SCRI Project Factsheet – Pathogen Mitigation Series #4
  5. Yang, X., and Hong, C. X. 2015. Diversity, risk and management of Phytophthora species in irrigation water for ornamental crops. SCRI Project Factsheet – Pathogen Mitigation Series #1.
  6. Zhang, H. B., and Hong, C. X.  2015. Thermal Stratification in Recycling Irrigation Ponds. SCRI Project Factsheet–Recycled Water Quality Series #1
  7. Zhang, H. B., and Hong, C. X.  2015.  Water pH in recycling irrigation ponds. SCRI Project Factsheet–Recycled Water Quality Series #2
  8. Zhang, H. B., and Hong, C. X.  2015.  Dissolved oxygen in recycling irrigation ponds. SCRI Project Factsheet–Recycled Water Quality Series #3

To enroll this knowledge center, learners need to create an account but they do NOT need a password to log in to view the materials. Please follow the steps below to create an account if you do not one yet. You will be able to use this account to access any courses under eXtension environment that are open to the public like “Irrigation Water Management for Ornametnal Horticulture”.

  1. Open your web browser to http://campus.extension.org
  2. Click “Create New Account” as marked on a Print Screen below.



  3. Complete the online form and click the “Create My New Account” button at the bottom of the page.
  4. Check your email account for a confirmation email from eXtension Campus Help Desk.
    1. If you do not see a confirmation email within 2 hours check your junk/spam folders first, then email campushelp@extension.org with your username and email address, and ask for a manual confirmation.
  5. Open the email and click on the confirmation link provided to confirm your account.
  6. A web page will open indicating that “Your registration has been confirmed”.
  7. In the upper right hand corner, you will need to search for your desired course (Irrigation Water Management for Ornamental Horticulture).

Selected Scientific Publications

  1. Brazee, N. J., Yang, X., and Hong, C. X.  2016. Phytophthora caryae sp. nov., a new species from streams and rivers in eastern United States. Plant Pathology, published online at http://onlinelibrary.wiley.com/doi/10.1111/ppa.12619/pdf
  2. Choudhari, C. E., Burgos-Garay, M. L., Moorman, G. W., and Hong, C. X.  2016.  Pythium and Phytopythium species in two Pennsylvania greenhouse irrigation water tanks. Plant Disease 100:926-932
  3. Cultice, A., Bosch, D. J., Pease, J., Boyle, K. J., and Xu, W. B. 2016. Horticultural growers’ willingness to adopt recycling of irrigation water. Journal of Agricultural and Applied Economics. 48: 99-118
  4. Hong, C. X. 2016. Koch’s postulates in the genomics era. Science eLetters at http://science.sciencemag.org/content/351/6270/224.e-letters
  5. Jung, T., Chang, T. T., Bakonyi, J., Seress, D., Pérez-Sierra, A., Yang, X., Hong, C. X., Scanu, B., Fu, C. H., Hsueh, K. L, Abad-Campos, P., Léon, M., and Jung, M. H. 2016.  Diversity of Phytophthora species in natural ecosystems of Taiwan and association with disease symptoms. Plant Pathology, published online at DOI: 10.1111/ppa.12564
  6. Kong, P., and Hong, C. X.  2016.  Environmental bacteria promote infection of host and nonhost plants by Phytophthora species. Nature Scientific Reports, published online at http://www.nature.com/articles/srep33239
  7. Zhang, H. B., Richardson, P. A., Belayeh, B. E., Ristvey, A., Lea-Cox, J. D., Copes, W. E., Moorman, G. W., and Hong, C. X.  2016.  Recycling irrigation reservoirs: thermal stratification and its implications for crop health and production. Journal of the American Water Resources Association 52:620-631.
  8. Copes, W. E., Yang, X., and Hong, C. X.  2015. Phytophthora species recovered from irrigation reservoirs in Mississippi and Alabama nurseries and pathogenicity of three new species.  Plant Disease 99:1390-1395
  9. Yang, X., Balci, Y., Brazee, N. J., Lyod, A. L., and Hong, C. X.  2015.  Phytophthora intercalaris sp. nov., a new species recovered from stream and irrigation water in eastern United States. International Journal of Systematic and Evolutionary Microbiology doi: 10.1099/ijsem.0.000800
  10. Yang, X., and Hong, C. X. 2015.  Comparative analysis of Phytophthora, Phytopythium and Pythium diversity in sediments in an agricultural runoff sedimentation reservoir. Plant Pathology Published online at DOI: 10.1111/ppa.12488
  11. Zhang, H. B., Richardson, P. A., Belayeh, B. E., Ristvey, A., Lea-Cox, J. D., Copes, W. E., Moorman, G. W., and Hong, C. X.  2015. Characterization of water quality in stratified recycling irrigation reservoirs. Agricultural Water Management 160:76-83
  12. Zhang, H. B., Richardson, P. A., Belayeh, B. E., Ristvey, A., Lea-Cox, J. D., Copes, W. E., Moorman, G. W., and Hong, C. X.  2015. Comparative analysis of water quality between runoff entrance and middle of recycling irrigation reservoirs. Water 7:3861-3877
  13. Hong, C. X., Moorman, G. W., Wohanka, W., and Büttner, C.  2014.  Biology, Detection and Management of Plant Pathology in Irrigation Water.  American Phytopathological Society. St. Paul, MN
  14. Copes, W. E., Barbeau, B. and Chastagner, G. A. 2014.   Chlorine dioxide for irrigation water treatment.  Pages 251-266  In Biology, Detection and Management of Plant Pathology in Irrigation Water.  C. X. Hong, G. W. Moorman, W. Wohanka, and C. Büttner, eds.  American Phytopathological Society. St. Paul, MN
  15. Elmer, W. H., Buck, J., Ahonsi, M. O., and Copes, W. E.  2014.  Emerging technologies for irrigation water treatment.  Pages 289-302  In Biology, Detection and Management of Plant Pathology in Irrigation Water.  C. X. Hong, G. W. Moorman, W. Wohanka, and C. Büttner, eds.  American Phytopathological Society. St. Paul, MN
  16. Hao, W., and Hong, C. X.  2014. Heat treatment induced bacterial changes in irrigation water and their implications for plant disease management. World Journal of Microbiology and Biotechnology  DOI 10.1007/s11274-013-1583-y
  17. Hao, W., Vinatzer, B. A., and Hong, C. X.  2014.  Pasteurization for irrigation water treatment.  Pages 187-196  In Biology, Detection and Management of Plant Pathology in Irrigation Water.  C. X. Hong, G. W. Moorman, W. Wohanka, and C. Büttner, eds.  American Phytopathological Society. St. Paul, MN
  18. Hong, C. X.  2014.  Control of plant pathogens in irrigation water. Compendium of Rhododendron and Azalea Diseases. R. Linderman, and D. M. Benson, eds. American Phytopathological Society. St. Paul, MN (in press)
  19. Hong, C. X.  2014.  Component analysis of irrigation water in plant disease epidemiology.  Pages 111-122  In Biology, Detection and Management of Plant Pathology in Irrigation Water.  C. X. Hong, G. W. Moorman, W. Wohanka, and C. Büttner, eds.  American Phytopathological Society. St. Paul, MN
  20. Hong, C. X. 2014.  Economic threshold of plant pathogens in irrigation water.  Pages 175-184  In Biology, Detection and Management of Plant Pathology in Irrigation Water.  C. X. Hong, G. W. Moorman, W. Wohanka, and C. Büttner, eds.  American Phytopathological Society. St. Paul, MN
  21. Hong, C. X., Moorman, G. W., Wohanka, W., and Büttner, C.  2014.  A partial list of plant pathogens found in different water sources and crop production systems.  Pages 389-412  In Biology, Detection and Management of Plant Pathology in Irrigation Water.  C. X. Hong, G. W. Moorman, W. Wohanka, and C. Büttner, eds.  American Phytopathological Society. St. Paul, MN
  22. Ivors, K. L., and Moorman, G. W.  2014.  Oomycete plant pathogens in irrigation water.  Pages 57-64 In Biology, Detection and Management of Plant Pathology in Irrigation Water.  C. X. Hong, G. W. Moorman, W. Wohanka, and C. Büttner, eds.  American Phytopathological Society. St. Paul, MN
  23. Kong, P., and Lea-Cox, J. D.  2014.  Water quality dynamics and influences on pathogen mitigation in irrigation reservoirs.  Pages 333-346  In Biology, Detection and Management of Plant Pathology in Irrigation Water.  C. X. Hong, G. W. Moorman, W. Wohanka, and C. Büttner, eds.  American Phytopathological Society. St. Paul, MN
  24. Lea-Cox, J. D., and Ross, D. S.  2014.  Water management to minimize pathogen movement in containerized production systems.  Pages 377-388  In Biology, Detection and Management of Plant Pathology in Irrigation Water.  C. X. Hong, G. W. Moorman, W. Wohanka, and C. Büttner, eds.  American Phytopathological Society. St. Paul, MN
  25. Moorman, G. W.  2014.  Irrigation water relation to greenhouse crop health. Pages 23-30  In Biology, Detection and Management of Plant Pathology in Irrigation Water.  C. X. Hong, G. W. Moorman, W. Wohanka, and C. Büttner, eds.  American Phytopathological Society. St. Paul, MN
  26. Moorman, G. W.,  Gevens, A. J., Granke, L. L., Hausbeck, M. K., Hendricks, K.,  Roberts, P. D., and Pettitt, T. R.  2014. Sources and distribution systems of irrigation water and their potential crop health risk.  Pages 3-12  In Biology, Detection and Management of Plant Pathology in Irrigation Water.  C. X. Hong, G. W. Moorman, W. Wohanka, and C. Büttner, eds. American Phytopathological Society. St. Paul, MN
  27. Ristvey, A. G., and Moorman, G. W.  2014.  An integrated approach to minimizing plant pathogens in runoff water from containerized production systems. Pages 365-376  In Biology, Detection and Management of Plant Pathology in Irrigation Water.  C. X. Hong, G. W. Moorman, W. Wohanka, and C. Büttner, eds.  American Phytopathological Society. St. Paul, MN
  28. Ross, D. S.  2014. Water resources and designs of recycling irrigation system for healthy crops. Pages 321-332  In Biology, Detection and Management of Plant Pathology in Irrigation Water.  C. X. Hong, G. W. Moorman, W. Wohanka, and C. Büttner, eds.  American Phytopathological Society. St. Paul, MN
  29. Yang, X., Copes, W. E., and Hong, C. X. 2014. Two novel species representing a new clade and cluster of Phytophthora species. Fungal Biology 118:72-82 (http://www.sciencedirect.com/science/article/pii/S1878614613001682)
  30. Yang, X., Gallegly, M. E., and Hong, C. X.  2014. A new high-temperature tolerant species in the clade 9 of the genus Phytophthora: P. hydrogena sp. nov. Mycologia 106:57-65 (online at doi:10.3852/13-043) (http://www.mycologia.org/content/106/1/57.short)
  31. Yang, X., and Hong, C. X. 2014. Halophytophthora fluviatilis sp. nov. from freshwater in Virginia.  FEMS Microbiology Letters 352:230-237 (online at doi: 10.1111/1574-6968.12391) (http://femsle.oxfordjournals.org/content/femsle/352/2/230.full.pdf)
  32. Yang, X., Richardson, P. A., and Hong, C. X. 2014. Phytophthora×stagnum nothosp. nov., a new hybrid from irrigation reservoirs at ornamental plant nurseries in Virginia. PLoS One at http://dx.plos.org/10.1371/journal.pone.0103450
  33. Kong, P. 2013.  Carbon dioxide as a potential water disinfestant for Phytophthora disease risk mitigation. Plant Disease 97:369-372 (http://apsjournals.apsnet.org/doi/pdf/10.1094/PDIS-09-12-0844-RE)
  34. Olson, H. A., Jeffers, S. N., Ivors, K. L., Steddom, K. C., Williams-Woodward, J. L., Mmbaga, M. T., Benson, D. M., and Hong, C. X.  2013.  Diversity and mefenoxam sensitivity of Phytophthora spp. associated with the ornamental horticulture industry in the southeastern US.  Plant Disease 97:86-92 (http://apsjournals.apsnet.org/doi/pdf/10.1094/PDIS-04-12-0348-RE)
  35. Pistininzi, M., Weiss, E., Achtemeier, L., and Hong, C. X. 2013.  Zoospore production biology of pythiaceous plant pathogens.  Journal of Phytopathology  162:69-80 (Online at doi: 10.1111/jph.12154) (http://onlinelibrary.wiley.com/doi/10.1111/jph.12154/abstract)
  36. Yang, X., Copes, W. E., and Hong, C. X.  2013. Phytophthora mississippiae sp. nov., a new species recovered from irrigation reservoirs at a plant nursery in Mississippi.  Journal of Plant Pathology and Microbiology (http://dx.doi.org/10.4172/2157-7471.1000180)
  37. Yang, X., and Hong, C. X. 2013. Phytophthora virginiana sp. nov., a high-temperature tolerant species from irrigation water in Virginia. Mycotaxon 126:167-176 (http://www.ingentaconnect.com/content/mtax/mt/2013/00000126/00000001/art00022)
  38. Yang, X., Kong, P., and Hong, C. X. 2013.  Evaluation of fungicide drenches for control of Phytophthora root rot of petunia, 2012. Plant Disease Management Reports 7:OT002
  39. Yang, X., Richardson, P. A., and Hong, C. X. 2013. Evaluation of nonregistered fungicide for control of rose downy mildew, 2012. Plant Disease Management Reports 7:OT001
  40. Yang, X., Richardson, P. A., Kong, P., and Hong, C. X. 2013.  Fungicidal control of Phytophthora aerial blight on annual vinca in Virginia, 2012. Plant Disease Management Reports 7:OT005
  41. Yang, X., Richardson, P. A., Olson, H. A., and Hong, C. X. 2013. Root and stem rot of begoniacaused by Phytopythium helicoides in Virginia. Plant Disease 97:1385 (https://www.apsnet.org/publications/plantdisease/2013/October/Pages/97_10_1385.2.aspx)
  42. Hao, W., Ahonsi, M. O., Vinatzer, B. A., and Hong, C. X., 2012.  Inactivation of Phytophthora and bacterial species in water by a potential energy-saving heat treatment. European Journal of Plant Pathology 134:357-365 (online at doi: 10.1007/s10658-012-9994-4) (http://link.springer.com/article/10.1007/s10658-012-9994-4)
  43. Hong, C. X., Richardson, P. A., Hao, W., Ghimire, S. R., Kong, P., Moorman, G. W., Lea-Cox, J. D., and Ross, D. S.  2012.  Phytophthora aquimorbida sp. nov. and Phytophthora taxon ‘aquatilis’ recovered from irrigation reservoirs and a stream in Virginia, USA. Mycologia doi:10.3852/11-055 (http://www.mycologia.org/content/104/5/1097.full.pdf+html)
  44. Kong, P., Lea-Cox, J. D., and Hong, C. X.  2012.  Effect of electrical conductivity on survival of Phytophthora alni, P. kernoviae and P. ramorum in a simulated aquatic environment.  Plant Pathology  61:1179-1186 (Online at doi: 10.1111/j.1365-3059.2012.02614.x) (http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3059.2012.02614.x/abstract)
  45. Kong, P., Lea-Cox, J. D., Moorman, G. W. and Hong, C. X. 2012. Survival of Phytophthora alni, P. kernoviae and P. ramorum in a simulated aquatic environment at different levels of pH.  FEMS Microbiology Letters 332:54-60 (Online at doi: 10.1111/j.1574-6968.2012.02574.x) (http://onlinelibrary.wiley.com/doi/10.1111/j.1574-6968.2012.02574.x/epdf)
  46. Man in 't Veld, W. A., Rosendahl, K. C. H. M., and Hong, C. X. 2012. Phytophthora Xserendipita sp. nov., a new species generated by natural hybridization. Mycologia 104:1390-1396 (Online at doi:10.3852/11-272) (http://www.mycologia.org/content/early/2012/06/07/11-272.full.pdf)
  47. Yang, X., Richardson, P. A., Ghimire, S. R., Kong, P., and Hong, C. X.  2012.  Phytophthora hedraiandra detected from irrigation water at a perennial plant nursery in Virginia.  Plant Disease 96:915 (https://www.researchgate.net/publication/263009093_Phytophthora_hedraiandra_detected_from_
    irrigation_water_at_a_perennial_ornamental_plant_nursery_in_Virginia
    )
  48. Garzón, C. D., Molineros, J. E., Yánez, J. M., Flores, F. J., Jiménez-Gasco, M. M., and Moorman, G. W.  2011. Sublethal doses of mefenoxam enhance Pythium damping-off of geraniums. Plant Disease 95:1233-1238 (http://apsjournals.apsnet.org/doi/pdf/10.1094/PDIS-09-10-0693)
  49. Ghimire, S. R., Richardson, P. A., Kong, P., Hu, J. H., Lea-Cox, J. D., Ross, D. R., Moorman, G. W., and Hong, C. X.  2011.  Distribution and diversity of Phytophthora species in nursery irrigation reservoir adopting water recycling system during winter months.  Journal of Phytopathology 159:713-719 (Online at doi: 10.1111/j.1439-0434.2011.01831.x) (http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0434.2011.01831.x/abstract)
  50. Hong, C. X., Gallegly, M. E., Richardson, P. A., and Kong, P.  2011.  Phytophthora pini Leonian resurrected to distinct species status.  Mycologia  103:351-360 (http://www.mycologia.org/content/103/2/351.full.pdf+html)
  51. Ahonsi, M. O., Doan S., Demuren, A., Banko, T. J., Copes, W. E., and Hong, C. X.  2010. Effects of hydrostatic pressure, agitation and CO2 stress on Phytophthora nicotianae zoospores in simulated recycled irrigation water. Pest Management Science 66:696-704 (https://www.researchgate.net/publication/41722861_Effects_of_hydrostatic_pressure_agitation_
    and_CO2_stress_on_Phytophthora_nicotianae_zoospore_survival
    )
  52. Hao, W., Richardson, P. A., and Hong, C. X.  2010.  Foliar blight of annual vinca (Catharanthus roseus) caused by Phytophthora tropicalis in Virginia. Plant Disease 94:274 (http://apsjournals.apsnet.org/doi/abs/10.1094/PDIS-94-2-0274A)
  53. Hong, C. X., Gallegly, M. E., Richardson, P. A., Kong, P., Moorman, G. W., Lea-Cox, J. D., and Ross, D. R.  2010.  Phytophthora hydropathica, a new species isolated from irrigation water, Rhododendron catawbiense and Kalmia japonica. Plant Pathology 59:913-921 (http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3059.2010.02323.x/pdf)
  54. Kong, P. and Hong, C. X. 2010. Zoospore density-dependent behaviors of Phytophthora nicotianae are autoregulated by extracellular products. Phytopathology 100:632-637 (http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-100-7-0632)
  55. Kong, P., Lee, B. W. K., Zhou, Z. S., and Hong, C. X. 2010. Zoosporic plant pathogens produce bacterial autoinducer-2 that affects Vibrio harveyi quorum sensing. FEMS Microbiology Letters 303:55-60 (http://onlinelibrary.wiley.com/doi/10.1111/j.1574-6968.2009.01861.x/epdf)
  56. Kong, P., Tyler, B. M., Richardson, P. A., Lee, B. W. K., Zhou, S. H., and Hong, C. X. 2010. Zoospore interspecific signaling promotes plant infection by Phytophthora species. BMC Microbiology http://www.biomedcentral.com/1471-2180/10/313 (http://www.biomedcentral.com/content/pdf/1471-2180-10-313.pdf)
  57. Lea-Cox, J. D., Zhao, H., Ross, D. S., Bilderback, T. E., Harris, J. R., Day, S. D., Hong, C. X., Yeager, T. H., Beeson, R. C. Jr., Bauerle, W. L., Ristvey, A. G., Lorscheider, M., Dickinson, S., and Ruter, J. M. 2010. A nursery and greenhouse online knowledge center: learning opportunities for sustainable practice. HortTechnology 20:509-517 (http://horttech.ashspublications.org/content/20/3/509.full.pdf+html)
  58. Lee, S. H., Garzón, C. D., and Moorman, G. W. 2010. Genetic structure and distribution of Pythium aphanidermatum populations in Pennsylvania greenhouses based on analysis of AFLP and SSR markers. Mycologia 102:774-784 (http://www.mycologia.org/content/102/4/774.full.pdf+html)

Theses & Dissertations

  1. D’Alessio., N. 2015. Segmentation of the market for labeled ornamental plants by environmental preferences: A latent class analysis. M.S. Thesis. Virginia Tech, Blacksburg, VA
  2. Ferraro, N. 2015.  Economic analysis of recapturing and recycling irrigation techniques on horticulture nurseries.  M.S. Thesis. Virginia Tech, Blacksburg, VA
  3. Lanze, C. 2015. Characterization of Pythium and Phytopythium species frequently found in irrigation water. M. S. thesis. The Pennsylvania State University, University Park, PA
  4. Yang, X. 2014. New species and phylogeny of the genus Phytophthora. Ph.D. Dissertation. Virginia Tech, Blacksburg, VA
  5. Burgos-Garay, M. L.  2013.  Effect of heterotrophic bacterial communities on Pythium spp. in recycled irrigation water. Ph. D. Dissertation. The Pennsylvania State University, University Park, PA
  6. Cultice, A.  2013.  Horticultural producers' willingness to adopt water recirculation technology in the Mid-Atlantic region. M.S. Thesis. Virginia Tech, Blacksburg, VA
  7. Hartter, D. 2012.  Understanding consumers’ ornamental plant preferences for disease-free and water conservation labels, Department of Agricultural and Applied Economics.  M.S. Thesis. Virginia Tech, Blacksburg, VA
  8. Hao, H. 2012.  A potential energy efficient heat treatment and its underlying biological mechanisms, Ph.D. Dissertation. Virginia Tech, Blacksburg, VA

Conference Proceedings

  1. Lea-Cox, J. D, Belayneh, B., Kim, J., and Majsztrik, J. C. 2012.  The value of weather data for daily nursery management decisions. Proceedings of Southern Nursery Association Research Conference 57:87-93
  2. Majsztrik, J. C., Ristvey, A. G., and Lea-Cox, J. D. 2012.  An in-depth look at fertilizer and irrigation practices in Maryland’s ornamental nursery industry.  Proceedings of Southern Nursery Association Research Conference 57:35-42

Abstracts

  1. Mirsoleymani, Z., Mostowfizadeh-Ghalamfarsa, R., Yang, X., and Hong, C. X. 2016. Genetic diversity of Phytophthora parsiana causing pistachio gummosis in Iran. Phytopathology 106(in press)
  2. Mirsoleymani, Z., Mostowfizadeh-Ghalamfarsa, R., Yang, X., and Hong, C. X. 2016. Redesignation of Phytophthora taxon walnut as P. regia sp. nov. Phytopathology 106(in press)
  3. Copes, W. E., Yang, X., and Hong, C. X.  2015. Phytophthora species recovered from irrigation reservoirs in Mississippi and Alabama nurseries and pathogenicity of three new species. Archived at http://www.apsnet.org/meetings/Documents/2015_meeting_abstracts/aps2015abP34.htm
  4. Kong, P., McDowell, J., and Hong, C. X.  2015. Zoospore exudates suppress plant defense gene expression in Arabidopsis thaliana.  The 18th International Plant Protection Congress, Berlin, Germany, August 24 to 27, 2015
  5. Kong, P., Richardson, P. A., Yang, X., Zhang, H. B., Ghimire, S. R., Moorman, G. W., Lea-Cox, J. D., Copes, W. E., Ross, D. S., Ristvey, A. G., Boyle, K. J., Bosch, D., Pease, J. and Hong, C. X.  2015. Building crop health into water recycling systems.  The 18th International Plant Protection Congress, Berlin, Germany, August 24 to 27, 2015
  6. Yang, X., Brazee, N. J., Loyd, A., and Hong, C. X. 2015. Phytophthora intercalaris, a novel species from streams and irrigation water in eastern United States. Archived at http://www.apsnet.org/meetings/Documents/2015_meeting_abstracts/aps2015abP509.htm
  7. Yang, X., Tyler, B. M., and Hong, C. X.  2014.  Constructing a new phylogeny for the genus Phytophthora.  Phytopathology 104:S133
  8. Hao, W., and Hong, C. X.  2013.  Biological control of Phytophthora nicotianae by heat-tolerant bacteria in irrigation water.  Phytopathology 103:S2.56
  9. Hong, C. X.  2013.  Diversity and significance of waterborne pathogens to plant biosecurity under a changing climate. 10th International Congress of Plant Pathology, Beijing, China, August 25-31, 2013
  10. Hong, C. X., and Moorman, G. W.  2013.  Diversity and significance of plant pathogens as agricultural water contaminants.  2013 AWRA Spring Specialty Conference on Agricultural Hydrology and Water Quality II, St. Louis, MO, March 25-27, 2013
  11. Kong, P., and Hong, C. X. 2013.  Aquatic biology of oomycete plant pathogens. 10th International Congress of Plant Pathology, Beijing, China, August 25-31, 2013
  12. Richardson, P. A., Kong, P., Cafà, G., and Hong, C. X.  2013.  Tracking water quality dynamics in a multi-basin agricultural water recycling system, 2013 AWRA Spring Specialty Conference on Agricultural Hydrology and Water Quality II, St. Louis, MO, March 25-27, 2013
  13. Richardson, P. A., Kong, P., Cafà, G., Lea-Cox, J. D., Belayneh, B. E., Ristvey, A. G., and Hong, C. X.  2013.  Dramatic fluctuations of water quality in agricultural runoff containment basins.  2013 AWRA Spring Specialty Conference on Agricultural Hydrology and Water Quality II, St. Louis, MO, March 25-27, 2013
  14. Yang, X., Copes, W. E., and Hong, C. X.  2013.  Three novel Phytophthora species from irrigation water in Mississippi.  Phytopathology 103:S2.164
  15. Burgos-Garay, M., Edson, J., and Moorman, G. W. 2012. Influence of Pythium aphanidermatum, P. irregulare, and P. cryptoirregulare on the bacterial community in recycled irrigated water. Phytopathology 102:S1.2
  16. Hong, C. X., and Richardson, P. A. 2012. Validation of water quality fluctuation patterns in runoff water containment basins of eastern and central Virginia.  Phytopathology 102:S4.55
  17. Yang, X., and Hong, C. X. 2012.  Isolation of Phytophthora and Pythium species from different depths of sediments in a runoff water sedimentation pond of eastern Virginia. Phytopathology 102:S4.140
  18. Hao, W., Vinatzer, B. A., and Hong, C. X.  2011.  Effect of temperature on survival of Phytophthora and bacterial species in irrigation water.  Phytopathology 101:S69
  19. Hong, C. X., Richardson, P. A., Ghimire, S. R., Kong, P., Hu, J. H., Moorman, G. W., Lea-Cox, J. D., and Ross, D. S.  2011.  Diversity of Phytophthora species identified in a nursery irrigation runoff water containment basin of eastern Virginia.  Phytopathology 101:S74
  20. Hong, C. X., Richardson, Kong, P., Edgerton, T., Asaro, C., and Oak, S. W. 2011.  Phytophthora species identified from streams in Virginia.  Phytopathology 101:S74
  21. Kong, P., Lea-Cox, J. D., Moorman, G. W., and Hong, C. X.  2011.  Survival of three quarantine pathogens in a simulated aquatic system at different levels of pH.  Phytopathology 101:S93
  22. Lea-Cox, J. D., and Majsztrik, J. C. 2011. Considering the value of real-time sensor information.  108th Annual American Society for Horticulture Science Conference. Waikoloa, HI.  HortScience 46(9): S210
  23. Majsztrik, J., Lea-Cox, J. D., Ross, D. S., and Ristvey, A. G. 2011.  Modeling nitrogen, phosphorus, and water dynamics in the nursery and greenhouse industry.108th Annual American Society for Horticulture Science Conference. Waikoloa, HI.  HortScience 46(9): S160-161
  24. Majsztrik, J., Lea-Cox, J. D., Ross, D. S., and Ristvey, A. G. 2011.  An in-depth analysis of water and nutrient management in the nursery and greenhouse industry in Maryland. 108th Annual American Society for Horticulture Science Conference. Waikoloa, HI.  HortScience 46(9): S220-221
  25. Gallegly, M. E., Hong, C. X., Richardson, P. A., and Kong, P. 2010.  Phytophthora pini, a valid distinct species. Phytopathology 100:S207
  26. Hao, W., and Hong, C. X.  2010. Effect of temperature on survival of chlamydospores and oospores of Phytophthora species in irrigation water. Phytopathology  100:S47
  27. Hong, C. X., Richardson, P. A., Ghimire, S. R., Hao, W., Kong, P., Moorman, G. W., Lea-Cox, J. L., and Ross, D. S.  2010. Two new homothallic species of Phytophthora from irrigation reservoirs and natural waterways in Virginia.  Phytopathology  100:S51
  28. Parkunan, V., Johnson, C. S., and Hong, C. X.  2010. Genetic diversity of the tobacco black shank pathogen, Phytophthora nicotianae, in Virginia. Phytopathology  100:S97