CTAHR logo links to site

University of Hawaii web site College of Trop Agr & Human Resources web site UH at Manoa web site
  • Nematode-trapping fungi catch a root-knot nematode.

  • Mummified aphids on milkweed.

  • Korean Natural Farming methods extract nutrients from kitchen or farm waste using vinegar or sugar.

  • Insectary settings include planting insectary plants and setting up a wasp nesting block next to the pak choi crop.

  • Managing nematodes on pumpkin.

  • Honey bee on basil.

  • Estimating plant available nitrogen of cover crops.

  • Sustainable Pest Management Lab Summer 2017.



LOGO for Sustainable Pest Management Lab


Sustainable Pest Management Laboratory

Dr. Koon-Hui Wang

Dr. Koon-Hui Wang

Dr. Koon-Hui Wang
Associate Professor
Department of Plant and Environmental Protection Sciences
University of Hawaiʻi at Mānoa

Areas of Specialty

Sustainable Pest Management
Soil and Agroecosystem Health Management
Nematode Ecology


  • Ph.D., Plant Pathology, University of Hawaii at Manoa, 2000.
  • M.S., Horticulture, University of Hawaii at Manoa, 1996.
  • B.S., Horticulture, National Taiwan University, 1993.

Contact Information

Department of Plant and Environmental Protection Sciences
3050 Maile Way, Room 310
Honolulu, HI 96822
Office: Gilmore 307A
Phone: (808) 956-2455
Fax: (808) 956-2428

YouTube Channel:


Office Hours: by appointment


Book Chapter

Sipes, B.S., and K.-H. Wang. 2015. Pests, diseases and weeds. In: G. Lobo and R.E. Paull (eds). Handbook of Pineapple Technology: Production, Postharvest Science, and Nutrition. John Wiley & Sons, New York, NY (in press).

Wang, K.-H. and J. Uchida. 2014. Plant Disease Prevention and Management in Sustainable Agricultural Systems. pp. 353-384 In: D. Nandwani (ed.) Sustainable Development and Biodiversity Volume 2: Sustainable Horticultural Systems. Springer International Publishing, Switzerland). 31 pp.

Selected Publications

Koon-Hui Wang, PhD ResearchGate

  1. Kokalis-Burelle, N., R. McSorley, K.-H. Wang, S. Saha, R. McGovern. Rhizosphere microorganisms affected by soil solarization and cover cropping in Capsicum annum and Phaseolus lunatics agroecosystems. Applied Soil Ecology (Accepted 4/14/17).
  2. Leslie, A., K.-H. Wang, S. Meyer, C. R. R. Hooks. Influence of cover crops on arthropods, free-living nematodes, and yield in a succeeding no-till soybean crop. Applied Soil Ecology 117-118:21-31.
  3. Gangaiah, C., A. A. Ahmad, H. V. Nguyen, K.-H. Wang, and T. J. K. Radovich. 2017. Evaluating three invasive algal species as local organic sources of Potassium (K) for pak choi (Brassica rapa, Chinensis group) Growth. HortScience 52(3):436-440. 2017.
  4. Mishra, S., K.-H. Wang,  B. S. Sipes, and M. Tian. 2017. Suppression of root-knot nematode by vermicompost tea prepared from different curing ages of vermicompost. Plant Disease 101: 1-4.
  5. Quintanilla-Tornel, M.A., K.-H. Wang, J. Tavares, C. R. R. Hooks. 2016. Effects of mulching on above and below ground pests and beneficials in a green onion agroecosystem. Agriculture, Ecosystems, & Environment 224: 75-85.
  6. Tavares, J., K.-H. Wang, and C. R. R. Hooks. 2015. An evaluation of insectary plants for management of insect pests in a hydroponic cropping system. Biological Control 91: 1-9 (
  7. Hinds, J., K.-H. Wang, and C. R. R. Hooks. 2015. Growth and yield of zucchini squash (Cucurbita pepo L.) as influenced by a sunn hemp living mulch. Biological Agriculture & Horticulture. 13 pp. DOI: 10.1080/01448765.2015.1017736.
  8. Wang, K.-H., R. Myers, A. Srivastava, and B.S. Sipes. 2015. Using polymerase chain reaction to evaluate preying potential of predatory nematodes against Rotylenchulus reniformis and Meloidogyne incognita. Biological Control 88: 54-60 DOI: 10.1016/j.biocontrol.2015.04.023.
  9. Wang, K.-H., T. Radovich, A. Pant, and Z. Cheng. 2014. Integration of cover crops and vermicompost tea for soil and plant health management in a short-term vegetable cropping system. Applied Soil Ecology 82: 26-37.
  10. Hinds, J., K.-H. Wang, S. P. Marahatta, S. L.F. Meyer, and C. R.R. Hooks. 2013. Sunn Hemp Cover Cropping and Organic Fertilizer Effects on the Nematode Community Under Temperate Growing Conditions. Journal of Nematology 45:265-271.
  11. Cabos, R., K.-H. Wang, B.S. Sipes, W.P. Heller, and T.K. Matsumoto. 2013. Detection of plant-parasitic nematode DNA in the gut of predatory and omnivorous nematodes. Nematropica 43: 44-48.
  12. Ferris, H.,B. S. Griffiths, D. L. Porazinska, T. O. Powers, K.-H. Wang, and M. Tenuta. 2012. Reflections on plant and soil nematode ecology: Past, present and future. Journal of Nematology 44: 115-126.
  13. Marahatta, S. P., K.-H. Wang, B.S. Sipes, and C.R.R. Hooks. 2012. Effects of Tagetes patula on active and inactive stages of root-knot nematodes. Journal of Nematology 44: 26-30.
  14. Marahatta, S. P., K.-H. Wang, B.S. Sipes, and C.R.R. Hooks. 2012. Effects of the integration of sunn hemp and soil solarization on plant-parasitic and free-living nematodes. Journal of Nematology 44: 72-79.
  15. Marahatta, S. P., K.-H. Wang,B.S. Sipes, and C.R.R. Hooks. 2012. Effects of Crotalaria juncea on anhydrobiotic state of Rotylenchulus reniformis. Nematropica 42: 34-40.
  16. Hooks,C. R.R., K.-H. Wang, S.L.F. Meyer, M. Lekveishvili, J. Hinds, E. Zobel, A. Rosario-Lebron, and M. Lee-Bullock. 2011. Impact of no-till cover cropping of Italian ryegrass on above and below ground faunal communities inhabiting a soybean field with special emphasis on soybean cyst nematodes. Journal of Nematology 43: 166-175.
  17. Wang, K.-H., C.R.R. Hooks, and S.P. Marahatta. 2011. Can using a strip-tilled living mulch system enhance organisms higher up in the soil food web hierarchy? Applied Soil Ecology 49: 107-117(doi:10.1016/j.apsoil.2011.06.008).
  18. Hooks, C.R.R., K.-H. Wang, A. Ploeg, R. McSorley. 2010. Using marigold (Tagetes spp.) as a cover crop to protect crops from plant-parasitic nematodes. Applied Soil Ecology 46: 307-320.
  19. Wang, K.-H., B.S. Sipes, and C.R.R. Hooks. 2011. Sunn hemp cover cropping and solarization as alternatives to soil fumigants for pineapple production. Acta Hort (ISHS) 902: 221-232.
  20. Hooks, C.R.R., K.-H. Wang, N.C. Pradhan, R. Manandhar, A. Varsino, and M.G. Wright. 2011. Population distribution and density of Pentalonia nigronervosa Coquerel (Hemiptera: Aphididae) within banana mats: Influence of plant age and height on sampling and management. Journal of Economic Entomology 104:947-955.
  21. Marahatta, S. P., K.-H. Wang, B.S. Sipes, and C.R.R. Hooks. 2010. Strip-till cover cropping for managing nematodes, soil microarthropods and weeds in a bitter melon agroecosystem. Journal of Nematology 42: 111-119.
  22. Wang, K.-H., C.R.R. Hooks. 2009. Plant-parasitic nematodes and their associated natural enemies within banana (Musa spp.) Plantings in Hawaii. Nematropica 39: 57-73.
  23. Hooks, C.R.R, S. Fukuda, E.A. Perez, R. Manandhar, K.-H. Wang, M.G. Wright, and R.P.P. Almeida. 2009. Aphid transmission of Banana bunchy top virus to bananas after treatment with a bananacide. J. Econ. Entomol. 102: 493-499.
  24. Hooks, C.R.R., R. Manandhar, E.A. Perez, K.-H. Wang, and R.P.P. Almeida. 2009. Comparative susceptibility of two banana cultivars to Banana bunchy top virus under laboratory and field environments. J. Econ. Entomol. 102: 897-904.
  25. Wang, K.-H., B. S. Sipes, D. P. Schmitt, A. E. MacGuidwin, M. McKenry, TJ. Bliss, B.R. Kerry, and S. Costa. 2008. Plant nematological contributions to phytopathology. APSnet Plant Pathology Online, St. Paul, MN.
  26. Wang, K.-H., and R. McSorley. 2008. Exposure time to lethal temperatures for Meloidogyne incognita suppression and its implication for soil solarization. J. Nematology 40: 7-12.
  27. Wang, K.-H., R. McSorley, R. N.Gallaher, N. Kokalis-Burelle. 2008. Cover crops and organic mulches for nematode, weed, and plant health management. Nematology 10: 231-242.
  28. Wang, K.-H., R. McSorley, N. Kokalis-Burelle. 2006. Effects of cover cropping, solarization, and soil fumigation on nematode communities. Plant and Soil 286: 229-243.
  29. Wang, K.-H., R. McSorley, P. Bohlen, and S. M. Gathumbi. 2006. Cattle grazing increases microbial biomass and alters soil nematode communities in subtropical pastures. Soil Biol. Biochem 38: 1956-1965.
  30. Wang, K.-H., R. McSorley, A. J. Marshall, and R. N. Gallaher. 2006. Influence of Crotalaria juncea as an organic fertilizer and ammonium nitrate on the nematode communities. Applied Soil Ecology 31: 186-198.
  31. Wang, K.-H. and R. McSorley. 2005. Effect of soil ecosystem management on nematode pests, nutrient cycling, and plant health. APSnet Plant Pathology Online, St. Paul, MN. Jan 19, 2005. 
  32. Wang, K.-H., R. McSorley, A. J. Marshall, and R. N. Gallaher. 2004. Nematode community changes following decomposition of Crotalaria juncea amendment in litterbags. Appl. Soil Ecology 27:31-45.
  33. Wang, K.-H., R. McSorley, R. N. Gallaher. 2004. Effect of Crotalaria juncea amendment on squash infected with Meloidogyne incognita. J. Nematol. 36: 290-296.
  34. Wang, K.-H., R. McSorley, R. N. Gallaher. 2004. Relationship of soil management history and nutrient status to nematode community structure. Nematropica 34: 83-95.
  35. Wang, K.-H., R. McSorley, R. N. Gallaher. 2003. Effect of Crotalaria juncea amendment on nematode communities in soil with different agricultural histories. J. Nematol. 35: 294-301.
  36. Wang, K.-H., B. S. Sipes, and D. P. Schmitt. 2003. Intercropping cover crops with pineapple for the management of Rotylenchulus reniformis and Meloidogyne javanica. J Nematol. 35: 30-47.
  37. Wang, K.-H., B. S. Sipes, and A. R. Kuehnle. 2003. Relationship between burrowing nematode resistance and tolerance and anthurium nutrient concentration. Soil and Crop Sci. Soc. Fla. 62: 82-85.
  38. Wang, K.-H., B. S. Sipes, and D. P. Schmitt. 2002. Crotalaria juncea as a cover crop for nematode management: A review. Nematropica 32: 35-57.
  39. Wang, K.-H., B. S. Sipes, and D. P. Schmitt. 2003. Enhancement of Rotylenchulus reniformis suppressiveness by Crotalaria juncea amendment in pineapple soils. Agri. Eco. Environ. 94: 197-203.
  40. Wang, K.-H., B. S. Sipes, and D. P. Schmitt. 2002. Management of Rotylenchulus reniformis in pineapple, Ananas comosus, by intercycle cover crops. J. Nematol. 34: 106-114.
  41. Wang, K.-H., B. S. Sipes, and D. P. Schmitt. 2001. Suppression of Rotylenchulus reniformis by Crotalaria juncea, Brassica napus, and Tagetes erecta. Nematropica 31(2): 235-249.
  42. Wang, K.-H., A. R. Kuehnle, and B. S. Sipes. 1997. In vitro tolerance and resistance to burrowing nematode, Radopholus similis in Anthurium species. Euphytica 103: 23-28.
  43. Wang, K.-H., A. R. Kuehnle, and B. S. Sipes. 1997. In vitro screening for burrowing nematode, Radopholus similis, tolerance and resistance in commercial Anthurium hybrids. In Vitro Cell. Dev. Biol. 33:205-208.

Current and Extramural Funded Projects

Wang, K.-H., Archana Pant, Jari Sugano, and Jensen Uyeda. 2015-2018. Improving Water Use Efficiency through No-till Cover Cropping and Solarization. NRCS CIG (Hawaii).

Wang, K.-H., Archana Pant, Jari Sugano, Jensen Uyeda, and Joe Defrank. 2015-2017. Sustainable Pest Management Approaches for High Tunnel Screenhouse Production in the Tropics. WSARE P&P.

Chiang, S, E. Cole, D. Ringuette, K. O’Brien, L. Constantinides, T. Radovich, and K.-H. Wang. 2014-2017. University of Hawaii's GoFarm Hawaii: A regional new farmer development initiative. NIFA Beginning Farmer Rancher Development Program.

Wang, K.-H., T. Radovich, A. Pant, N. Andrew, N. Hue, J. Sugano, J. Uyeda. 2014-2017. Promoting the use of cover crop calculator for the tropics as nitrogen management tool and the use of cover crops for soil health management guideline. NRCS CIG (National).

Wang, K.-H., A. Pant, T. Radovich, J. Sugano, C. Tamaru, B. Fox, J. Uyeda, S. Chiang, C. Chan-Halbrandt. 2013-2016. Center of Rural Agriculture Training for Entrepreneurship (CRATE) for the Pacific. NIFA AFRI AE&RC.


Extension Publications

  • Uyeda, J., J. Sugano, S. Fukuda, M. Kawate, R. Shimabuku, and K.-H. Wang . 2013. Sprayer calibration using the 1/128th method for handheld spray gun systems. CTAHR Cooperative Extension Service PRRE-7.
  • Uyeda, J., J. Sugano, S. Fukuda, M. Kawate, R. Shimabuku, and K.-H. Wang. 2013. Sprayer calibration using the 1/128th method for boom spraysystems. CTAHR Cooperative Extension Service PRRE-8.
  • Wang. K.-H. and B.S. Sipes. 2009. Solarization and Cover Cropping as Alternatives to Soil Fumigants for Nematode Management in Hawai‘i’s Pineapple Fields. CTAHR Cooperative Extension Service SCM-29. 4 pp.
  • Wang. K.-H. and C.R.R. Hooks. 2009. Survey of nematodes on banana in Hawaii and methods used for their control. CTAHR Cooperative Extension Service PD-69. 7pp.
  • Hooks, C.R.R., K. Chandara, D.Fallon, K.-H. Wang, R. Manandhar. 2007. The impact of sunn hemp cover cropping on belowground organisms and nutrient status associated with a cucumber planting. Cooperative Extension Service SCM-21.
  • Wang, K-H., C. R.R. Hooks, and Antoon Ploeg. 2007. Protecting crops from nematode pests: using marigold as an alternative to chemical nematicides. Cooperative Extension Service, CTAHR, PD-35.
  • Hooks, C.R.R., A. Fereres, and K.-H. Wang. 2007. Using protector plants to guard crops from aphid caused non-persistent viruses. Cooperative Extension Service, CTAHR SCM-18.
  • Hooks, C.R.R., K.-H. Wang, and D. Fallon. 2006. An ally in the war against nematode pests: using sunn hemp as a cover crop to suppress root-knot nematodes. Cooperative Extension Service, CTAHR, PD-28.
  • Wang, K.-H., R. Dunn, and R. McSorley. 2005. Foliar nematodes as pests of ornamental plants. University of Florida, IFAS, Department of Entomology and Nematology Extension Fact Sheet SP221.
  • Wang, K.-H. and R. McSorley. 2004. Management of nematodes with cowpea cover crop. UF/IFAS Edis.
  • Dover, K. Wang, K.-H. and R. McSorley. Nematode management using sorghum and its relatives. UF/IFAS Edis.


  • 2012  Syngenta Best Scientist Award. Society of Nematologists 51st Annual Meeting, 2012, Savanah, GA.
  • 2006. William Boright Hewitt and Maybelle Ellen Ball Hewitt Award (Young Scientist Award), American Phytopathological Society.

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