Juang Chong

Extension Specialist - Turfgrass and Ornamental Crop Entomology
Horticulture Program Team, Plant and Environmental Sciences Department, PeeDee Research and Education Center

Office: Pee Dee Research & Education Center
Phone: 843-519-0479
Email: juanghc@clemson.edu


 Educational Background

Ph.D. Entomology
University of Georgia 2005

M.S. Entomology
University of Georgia 2001

B.S. Ecology and Evolutionary Biology
University of Arizona 1999

 Courses Taught

PLPA/ENT 4060/6060 Diseases and Insects of Turfgrasses
PLPA/ENT 4080/6080 Diseases and Insects of Turfgrasses - Lab


I joined Clemson University in 2007, with research and extension responsibilities in commercial turfgrass and ornamental plant pest management. I work with my stakeholders to develop research and extension programs that improve the management of insect and mite pests in turfgrass and ornamental plant production and maintenance systems.

 Research Interests

My research program seeks to develop and improve pest management programs in turf and ornamental plant systems. I have three major research foci:
1) 1) Documentation of species diversity and seasonal activities of pestiferous and beneficial arthropods in ornamental plant and turfgrass systems; 2) Identification and assessment of the interactions among the arthropod pests, their natural enemies, their host plants, and the environment; and 3) Development and improvement of IPM systems against arthropod pests of turfgrass and ornamental plants that incorporate ecology, environmental toxicology, biological control, chemical control, cultural control, and host plant resistance.
Under these focus areas, my program is conducting research on the biology, ecology and management of many major pests of turfgrass, ornamental plants and vegetables, such as mites, thrips, whiteflies, aphids, scale insects, mealybugs, ambrosia beetles, flatheaded borers and foliar feeding beetles. My program is also working on better understand the roles of pollinators in environmental horticulture and approaches to protect the pollinators.

 Extension and Outreach

My extension program reaches not only greenhouse and nursery growers, landscape care professionals, arborists, ground managers, golf course superintendents, sod producers, industry partners and other stakeholders in South Carolina, but also a national and international audience. This broad reach is achieved through my biweekly newsletter (PestTalks), articles in trade magazines, educational workshops and presentation, and problem solving and consultations via various media.


i. Kheirodin, A., A. M. Simmons, J. C. Legaspi, E. E. Grabarcyzk, M. D. Toews, P. M. Roberts, J.-H. Chong, W. E. Snyder, and J. M. Schmidt. 2020 Can generalist predators control Bemisia tabaci? Insects 11: 823. doi:10.3390/insects11110823

ii. Klingeman, W. E., J. H. Chong, C. Harmon, L. Ames, A. V. LeBude, and P. Chandran. 2020. Scale insect records from ornamental plants help to prioritize plant health resource development. Plant Health Progress 21: 278-287.

iii. (FAS here) Chong, J. H., and J. D. Young. 2020. First records of Alcathoae carolinensis Engelhardt and Synenthedon alleri (Engelhardt) in South Carolina, U.S.A. Journal of Agricultural and Urban Entomology 36: 92-97.

iv. Rhodes, S. A., M. W. Turnbull, and J. H. Chong. 2019. Nitrogen fertilization of host plant influenced the nutritional status and life history of the Madeira mealybug (Hemiptera: Pseudococcidae). Environmental Entomology 48: 1129-1137.

v. Robayo Camacho, E., J.-H. Chong, S. K. Braman, S. D. Frank, and P. B. Schultz. 2018. Natural enemy communities and biological control of Parthenolecanium spp. (Hemiptera: Coccidae) in the southeastern United States. Journal of Economic Entomology 111: 1558-1568.

vi. Fulcher, A., A. LeBude, S. A. White, M. R. Chappell, S. C. Marble, J.-H. Chong, W. Dunwell, F. Hale, W. Klingeman, G. Knox, J. Derr, S. K. Braman, N. W. Gauthier, A. Dale, F. P. Hand, J. Williams-Woodward, and S. Frank. 2017. Advancing integrated pest management adoption and achieving extention impact: A working group success story. HortTechnology 27: 759-764.

vii. Robayo Camacho, E., J.-H. Chong, S. K. Braman, S. D. Frank, and P. B. Schultz. 2017. Life History of Parthenolecanium spp. (Hemiptera: Coccidae) in urban landscapes of the southeastern United States. Journal of Economic Entomology 110: 1668-1675.

viii. Robayo Camacho, E., J.-H. Chong, and P. B. Schultz. 2016. Difference in the abundance of scale insect parasitoids among four cardinal directions. Florida Entomologist 99: 813-815.

ix. Rhodes, S. A., and J.-H. Chong. 2016. Less is more? Basil growth and flowering under below-recommended nitrogen fertilization rates. Journal of Environmental Horticulture 34: 84-90.

x. Ranger, C. M., M. E. Reding, P. B. Schultz, J. B. Oliver, S. D. Frank, K. M. Adesso, J.-H. Chong, B. Simpson, C. Werle, S. Gill, and C. Krause. 2016. Biology, ecology, and management of nonnative ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) in ornamental plant nurseries. Journal of Integrated Pest Management 7: 1-23.

xi. Robayo Camacho, E., and J.-H. Chong. 2015. General biology and current management approaches of soft scale pests (Hemiptera: Coccidae). Journal of Integrated Pest Management 6(1): 17; DOI: 10.1093/jipm/pmv016.

xii. Werle, C. T., J.-H. Chong, B. J. Sampson, M. E. Reding, and J. J. Adamczyk. 2015. Seasonal and spatial dispersal patterns of select ambrosia beetles (Coleoptera: Curculionidae) from forest habitats into production nurseries. Florida Entomologist 98: 884-891.

xiii. Ranger, C. M., P. B. Schultz, S. D. Frank, J.-H. Chong, and M. E. Reding. 2015. Nonnative ambrosia beetles as opportunistic exploiters of living but weakened trees. PLoS One 10(7): e0131496. DOI: 10.1371/journal.pone.0131496.

xiv. Chong, J.-H., and K. R. Hinson. 2015. A comparison of trap types for assessing diversity of Scarabaeoidea on South Carolina golf courses. Journal of Economic Entomology 108: 2383-2396.

xv. Chong, J.-H. 2015. Species richness and seasonal abundance of billbugs (Sphenophorus spp.; Coleoptera: Curculionidae) on South Carolina golf courses. Journal of Urban and Agricultural Entomology 31: 20-28.

xvi. Chong, J.-H., L. F. Aristizabal, and S. P. Arthurs. 2015. Biology and management of Maconellicoccus hirsutus (Green) (Hemiptera: Pseudococcidae) on ornamental plants. Journal of Integrated Pest Management 6: 5; 13 pp. DOI: 10.1093/jipm/pmv004

xvii. White, D. L., R. Pargas, A. Chow, J. Chong, M. Cook, I. Tak. 2014. The Vanishing Firefly Project: Engaging Citizen Scientists with a Mobile Technology and Real-Time Reporting Framework. 5th ACM SIGSPATIAL International Workshop on GeoStreaming (IWGS), Dallas, TX (November 4, 2014).

xviii. Chong, J.-H. and E. R. Camacho. 2014. Distribution, host plants and life history of Melanaspis deklei (Hemiptera: Coccoidea: Diaspididae) in South Carolina, U.S.A. Acta Zoologica Bulgarica, Supplement 6: 13-19.

xix. Chow, A. T., J. H. Chong, M. Cook, and D. White. 2014. Vanishing fireflies: A citizen science project promoting scientific inquiry and environmental stewardship. Science Education & Civil Engagement 6: 23 – 31.

xx. Rameshkumar, A., J. S. Noyes, J. Poorani, and J.-H. Chong. 2013. Description of a new species of Anagyrus Howard (Hymenoptera: Chalcidoidea: Encyrtidae), a promising biological control agent of the invasive Madeira mealybug, Phenacoccus madeirensis Green (Hemiptera: Sternorrhyncha: Pseudococcidae). ZooTaxa 3717: 76-84.

xxi. Fulcher, A., S. A. White, J.-H. Chong, J. C. Neal, J. L. Williams-Woodward, C. Adkins, S. K. Braman, M. R. Chappell, J. F. Derr, W. Dunwell, S. D. Frank, S. A. Gill, F. A. Hale, W. E. Klingeman, A. V. LeBude, K. Rane, and A. S. Windham. 2013. Testing, promoting, and launching an app as an Extension tool: A case study with IPMPro. HortTechnology 23: 407-410.

xxii. Fulcher, A., J.-H. Chong, S. A. White, J. C. Neal, J. L. Williams-Woodward, C. Adkins, S. K. Braman, M. R. Chappell, J. F. Derr, W. Dunwell, S. D. Frank, S. A. Gill, F. A. Hale, W. E. Klingeman, A. V. LeBude, K. Rane, and A. S. Windham. 2013. Developing an app as an Extension education tool: A case study using IPMPro. HortTechnology 23: 402-406.

xxiii. Chong, J.-H., J. S. Weaver, and L. Reid. 2012. New records of bark and ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) from South Carolina, U.S.A. Coleopterists Bulletin 66: 250-252.

xxiv. Wheeler, A. G., and J.-H. Chong. 2012. Geocoris uliginosis (Say) (Hemiptera: Lygaeoidea: Geocoridae): Association with Spanish moss (Tillandsia usneoides) on trees and shrubs. Proceedings of the Entomological Society of Washington 114: 424-429.

xxv. Fulcher, A., W.E. Klingeman, J.-H. Chong, A. LeBude, G.R. Armel, M. Chappell, S.D. Frank, F. Hale, J. Neal, S.A. White, J. Williams-Woodward, K. Ivors, C. Adkins, A. Senesac, and A. Windham. 2012. Stakeholder vision of future direction and strategies for southeastern U.S. nursery pest research and Extension programming. Journal of Integrated Pest Management 3 (2): B1-B7, DOI: http://dx.doi.org/10.1603/IPM11030.

xxvi. LeBude, A. V., S. A. White, A. F. Fulcher, S. Frank, J.-H. Chong, M. R. Chappell, A. Windham, S. K. Braman, W. E. Klingeman III, K. Ivors, F. Hale, W. Dunwell, J. Williams-Woodward, C. Adkins, and J. Neal. 2012. Assessing the integrated pest management practices of southeastern U.S. nursery operations. Pest Management Science DOI: 10.1002/ps.3295.

xxvii. Hinson, K. R., and J.-H. Chong. 2011. New state record for Phyllophaga inepta Horn from South Carolina. Coleopterists Bulletin 65: 192-193.

xxviii. Holguin, C. M., F. P. F. Reay-Jones, J. R. Frederick, P. H. Adler, J.-H. Chong, and A. Savereno. 2010. Insect diversity in switchgrass grown for biofuel in South Carolina. Journal of Agricultural and Urban Entomology 27: 1-29.

xxix. Chong, J.-H., A. L. Roda, and C. Mannion. 2010. Density and natural enemies of the Asian citrus psyllid, Diaphorina citri (Hemiptera: Psyllidae), in the residential landscape of southern Florida. J. Agricultural and Urban Entomology 27: 33-49.

xxx. Chong, J.-H., L. Reid, and M. Williamson. 2010. Distribution, host plants, and damage of the black twig borer, Xylosandrus compactus (Eichhoff), in South Carolina. Journal of Agricultural and Urban Entomology 29: 199-208.

xxxi. Chong, J.–H., G. S. Hodges, and M. Samuel-Foo. 2009. First record and management of the armored scale Melanaspis deklei Dietz & Davidson, in South Carolina. Journal of Agricultural and Urban Entomology 26: 63-75.

xxxii. Chong, J.-H. 2009. First report of the pink hibiscus mealybug, Maconellicoccus hirsutus (Green) (Hemiptera: Pseudococcidae), in South Carolina. Journal of Agricultural and Urban Entomology 26: 87-94.

xxxiii. Chong, J.-H. 2009. Comparative efficacy of neonicotinoids and selected insecticides in suppressing tunneling activity of mole crickets (Orthoptera: Gryllotalpidae) in turfgrass. Journal of Agricultural and Urban Entomology 26: 135-146.

xxxiv. Chong, J.-H., S. K. Braman, and F. C. Waltz. 2009. St Augustinegrass cultivar influences on southern chinch bug and predator populations. Applied Turfgrass Science Online: doi:10.1094/ATS-2009-1123-01-RS.

xxxv. Chong, J.-H., and D. M. Park. 2009. Effects of saline irrigation water on the activities of turfgrass arthropods. International Turfgrass Society Research Journal 11: 619-629.

xxxvi. Chong, J.-H., J. J. Tefel, A. L. Roda, and C. M. Mannion. 2009. Effect of beetle density and time of day on the dispersal of Gratiana boliviana (Coleoptera: Chrysomelidae). Florida Entomologist 92: 99-106.

xxxvii. Chong, J.-H., C. M. Mannion, and A. L. Roda. 2008. Mortality of the lobate lac scale, Paratachardina lobata lobata (Hemiptera: Kerriidae), at near or below freezing temperatures. Florida Entomologist 91: 674-678.

xxxviii. Amarasekare, K. G., J.-H. Chong, N. D. Epsky, and C. M. Mannion. 2008. Effect of constant temperatures on the developmental biology of Paracoccus marginatus Williams and Granara de Willink (Hemiptera: Pseudococcidae). Environmental Entomology 101: 1798-1804.

xxxix. Chong, J.-H., and R. D. Oetting. 2008. Impacts of parasitism on the survivorship and reproduction of the Madeira mealybug (Hemiptera: Psudococcidae). Journal of Entomological Science 43: 169-176.

xl. Chong, J.-H., A. L. Roda, and C. M. Mannion. 2008. Life history of the mealybug, Maconellicoccus hirsutus (Green) (Hemiptera: Psudococcidae), at constant temperatures. Environmental Entomology 37: 323-332.


PestTalks, a biweekly newsletter on pest management