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Dr. Tim Grout

Dr. Tim Grout

Dr. Tim Grout
Manager: Research and Technical
CRI at Nelspruit

Before starting his career at CRI in 2001 he was Research leader of Entomology and Research Entomologist in Port Elizabeth and Nelspruit. He has been working in the SA Citrus Industry for 38 years as a Citrus entomologist and has experience with red scale, mites, thrips, whiteflies, leafhoppers, psylloids, fruit flies and false codling moth.

  • BSc Hons Entomology Cum Laude (UKZN-PMB) 1981
  • PhD Economic Entomology, University of California, Riverside 1985
Current Research Focus 

Postharvest treatments for phytosanitary pests that involve fumigation; changes to pest status under nets; evaluating systemic chemicals as future treatments for Diaphorina citri.

h-index = 17, i10-index = 29

Recent Research Papers 

Boardman, L., T.G. Grout and J.S. Terblanche. 2012. False codling moth Thaumatotibia leucotreta (Lepidoptera, Tortricidae) larvae are chill-susceptible.  Insect Science 19: 315-328.

Boardman, L., J.G. Sørensen, T.G. Grout, J.S. Terblanche. 2017. Molecular and physiological insights into the potential efficacy of CO2-augmented postharvest cold treatments for false codling moth. Postharvest Biology & Technology 132: 109-118.

Dohino, T., G.J. Hallman, T.G. Grout, A.R. Clarke, P.A. Follett, D.R. Cugala, D.M. Tu, W. Murdita, E. Hernandez, R. Pereira, S.W. Myers. 2017. Phytosanitary Treatments Against Bactrocera dorsalis (Diptera: Tephritidae): Current Situation and Future Prospects. J. Econ. Entomol. 110(1): 67-79.

Grout, T.G., J.H. Daneel, A.B. Ware and R.R. Beck.  2011.  A comparison of monitoring systems used for Ceratitis species (Diptera: Tephritidae) in South Africa. Crop Protection 30: 617-622.

Grout, T.G., Daneel, J-H., Mohamed, S.A., Ekesi, S., Nderitu, P.W., Stephen, P.R. & Hattingh, V.   2011. Cold susceptibility and disinfestation of Bactrocera invadens (Diptera: Tephritidae) in oranges. J. Econ. Entomol. 104(4):1180-1188.

Grout, Tim G., Stephen, Peter R., Daneel, John Henry, Hattingh, Vaughan.  2011.  Cold Treatment of Ceratitis capitata (Diptera: Tephritidae) in Oranges Using a Larval Endpoint.  J. Econ. Entomol. 104(4): 1174-1179.

Grout, T.G., Stephen, P.R., Rison, J-L. 2018. Cyantraniliprole can replace malathion in baits for Ceratitis capitata (Diptera: Tephritidae). Crop Protection 112: 304-312.

Grout, T.G. and K.C. Stoltz. 2016. Eliminating Macchiademus diplopterus (Hemiptera: Lygaeidae) and Siculobata sicula (Acari: Oribatulidae) From Export Fruit Using Ethyl Formate. J. Econ. Entomol. 109: 2329-2333.

Moore, S.D., W. Kirkman, P.R. Stephen, S. Albertyn, C.N. Love, T.G. Grout, V. Hattingh. 2017. Development of an improved postharvest cold treatment for Thaumatotibia leucotreta (Meyrick) (Lepidoptera: Tortricidae). Postharvest Biol. Technol. 125: 188-195.

Roberts, R., G. Cook, T.G. Grout, F. Khamis, I. Rwomushana, P. W. Nderitu, Z. Seguni, C.L. Materu, C. Steyn, G. Pietersen, S. Ekesi, and H.F. le Roux. 2017. Resolution of the Identity of ‘Candidatus Liberibacter’ Species From Huanglongbing-Affected Citrus in East Africa. Plant Disease 101(8): 1481-1488.

Rwomushana, I., Khamis, F.M., Grout, T.G., Mohamed, S.A., Sétamou, M., Borgemeister, C., Heya, H.M., Tanga, C.M., Nderitu, P.W., Seguni, Z.S., Materu, C.L., Ekesi, S. 2017. Detection of Diaphorina citri Kuwayama (Hemiptera: Liviidae) in Kenya and potential implication for the spread of Huanglongbing disease in East Africa. Biological Invasions 19(10): 2777-2787.