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United States Department of Agriculture

Agricultural Research Service

Timothy R. Gottwald

Research Leader


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Challenges in modelling plant diseases - (Peer Reviewed Journal) - (23-Jun-14)
Orchard and nursery dynamics of the effect of interplanting citrus with guava for Huanglongbing, vector, and disease management - (Peer Reviewed Journal)
Gottwald, T.R., Hall, D.G., Kriss, A.B., Salinas, E.J., Parker, P.E., Beattie, G.C., Nguyen, M.C. 2014. Orchard and nursery dynamics of the effect of interplanting citrus with guava for Huanglongbing, vector, and disease management. Crop Protection. 65:93-103.
Science Advisory Panel Meets to Discuss HLB/ACP - (Trade Journal)
Grafton-Cardwell, B., Morse, J., Civerolo, E.L., Gottwald, T.R., Hoddle, M., Setamou, M., Vidalakis, G. 2014. SCIENCE ADVISORY PANEL MEETS TO DISCUSS HLB/ACP. Citrograph. 5(3):42-48.
Response to the recently published article “Potential distribution of citrus black spot in the United States based on climatic conditions" - (Peer Reviewed Journal)
Graham, J.H., Gottwald, T.R., Timmer, L.W., Filho, A.B., Van Den Bosch, F., Irey, M.S., Taylor, E.L., Magarey, R.D., Takeuchi, Y. 2014. Response to the recently published article “Potential distribution of citrus black spot in the United States based on climatic conditions". European Journal of Plant Pathology. 139(2).
Effects of postharvest treatments on recovery of Xanthomonas citrisubsp. citri from infected grapefruit leaves - (Peer Reviewed Journal)
Anco, D.J., Poole, G.H., Gottwald, T.R. 2014. Effects of postharvest treatments on recovery of Xanthomonas citrisubsp. citri from infected grapefruit leaves. Crop Protection Journal. 62:115-123.
Bayesian analysis for inference of an emerging epidemic: citrus canker in urban landscapes Reprint Icon - (Peer Reviewed Journal)
Neri, F.M., Cook, A.R., Gottwald, T.R., Gilligan, C.A. 2014. Bayesian analysis for inference of an emerging epidemic: citrus canker in urban landscapes. PLoS Computational Biology. 10(4):e1003587.
What interval characteristics make a good disease assessment category scale Reprint Icon - (Peer Reviewed Journal)
Chian, K., Liu, S., Bock, C.H., Gottwald, T.R. 2014. What interval characteristics make a good disease assessment category scale. Phytopathology. 104(6): 575-585 http://dx.doi.org/10.1094?PHYTO-10-13-0279-R.
A comparison of the bioassay test and culture to detect Xanthomonas citri subsp. citri - (Peer Reviewed Journal) - (06-Sep-13)
A generic risk-based surveying method for invading plant pathogens - (Peer Reviewed Journal) - (05-Sep-13)
Spatial and temporal assessment of pollen- and seed-mediated gene flow from genetically engineered plum Prunus domestica - (Peer Reviewed Journal)
Scorza, R., Kriss, A.B., Callahan, A.M., Webb, K.K., Demuth, M.A., Gottwald, T.R. 2013. Spatial and temporal assessment of pollen- and seed-mediated gene flow from genetically engineered plum Prunus domestica. PLoS One. 8(10):75291.
Risk-based residential HLB/ACP survey for California, Texas and Arizona Reprint Icon - (Peer Reviewed Journal)
Gottwald, T.R., Luo, W., Mcroberts, N. 2013. Risk-based residential HLB/ACP survey for California, Texas and Arizona. Plant Management Network. Webcast.
A comparison of different category scales for estimating disease severity - (Proceedings)
Chiang, K., Liu, S., Bock, C.H., Gottwald, T.R. 2013. A comparison of different category scales for estimating disease severity. Plant Disease Epidemiology International Workshop Proceedings. August 22-25, 2013, Beijing, China:P36 (69pp).
A comparison of culture and bioassay for detecting citrus canker - (Abstract Only)
Bock, C.H., Gottwald, T.R., Graham, J.H. 2013. A comparison of culture and bioassay for detecting citrus canker. Phytopathology. 103:S2.16 http:11apsjournals.apsnet.org/loi/phyto.
Pre-symptomatic fibrous root decline in citrus trees caused by huanglongbing and potential interaction with Phytophthora spp. - (Peer Reviewed Journal)
Graham, J.H., Johnson, E.G., Gottwald, T.R., Irey, M.S. 2013. Pre-symptomatic fibrous root decline in citrus trees caused by huanglongbing and potential interaction with Phytophthora spp.. Plant Disease. 97:1195-1199.
Epidemiology of Plum Pox ‘D’ strain in Canada and the U.S. - (Peer Reviewed Journal)
Gottwald, T.R., Wierenga, E., Luo, W., Parnell, S. 2013. Epidemiology of Plum Pox ‘D’ strain in Canada and the U.S.. Canadian Journal of Plant Pathology. 35:442-457.
A new method of spatial analysis of irregularly spaced HLB data and biological implications - (Abstract Only) - (01-Feb-13)
Variability of direction of tree-to-tree spread of HLB over time - (Abstract Only) - (01-Feb-13)
The Effect of Irrigation on the Temporal Increase of Citrus Variegated Chlorosis Reprint Icon - (Peer Reviewed Journal)
Goncalves, F.P., Stuchi, E.S., Lourenco, S.A., Kriss, A.B., Gottwald, T.R., Amorim, L. 2014. The Effect of Irrigation on the Temporal Increase of Citrus Variegated Chlorosis. International Research Conference on Huanglongbing. 57:8-14.
Evaluation of management programs for protecting young citrus plantings from huanglongbing - (Peer Reviewed Journal)
Hall, D.G., Gottwald, T.R., Stover, E., Beattie, G.A.C. 2013. Evaluation of management programs for protecting young citrus plantings from huanglongbing. HortScience. 48:330-337.
Predicting the establishment and spread of plant disease from regulatory sampling - (Abstract Only) - (07-Jan-13)
The effect of Horsfall-Barratt category size on the accuracy and reliability of estimates of pecan scab severity - (Peer Reviewed Journal)
Bock, C.H., Van Den Bosch, F., Parnell, S., Wood, B.W., Gottwald, T.R. 2013. The effect of Horsfall-Barratt category size on the accuracy and reliability of estimates of pecan scab severity. Plant Disease. 97:797-806.
Efficacy of area-wide inoculum reduction and vector control on temporal progress of huanglongbing in Young Sweet orange plantings - (Peer Reviewed Journal) - (18-Dec-12)
Effect of the duration of inoculum exposure on development of citrus canker symptoms on seedlings of Swingle citrumelo - (Peer Reviewed Journal)
Bock, C.H., Graham, J.H., Gottwald, T.R., Cook, A.Z., Parker, P.P. 2014. Effect of the duration of inoculum exposure on development of citrus canker symptoms on seedlings of Swingle citrumelo. European Journal of Plant Pathology. 138:237-245.
Pecan scab severity-effects of assessment methods - (Peer Reviewed Journal)
Bock, C.H., Wood, B.W., Gottwald, T.R. 2013. Pecan scab severity-effects of assessment methods. Plant Disease. 97:675-684.
Predisposition of citrus foliage to infection with Xanthomonas citri subsp. citri - (Peer Reviewed Journal)
Bock, C.H., Graham, J.H., Cook, A.Z., Parker, P., Gottwald, T.R. 2013. Predisposition of citrus foliage to infection with Xanthomonas citri subsp. citri. Journal of Plant Pathology. 95:99-106.
Predisposition of citrus foliage to infection with Xanthomonas citri subsp. citri. - (Abstract Only)
Bock, C.H., Graham, J.H., Cook, A.Z., Parker, P., Gottwald, T.R. 2012. Predisposition of citrus foliage to infection with Xanthomonas citri subsp. citri. [abstract]. Phytopathology. 102:S4.13.
Estimating the spatial distribution of a plant disease epidemic when it is first discovered and the design of early detection monitoring Reprint Icon - (Peer Reviewed Journal)
Parnell, S., Gottwald, T.R., Gilks, W.R., Van Den Bosch, F. 2012. Estimating the spatial distribution of a plant disease epidemic when it is first discovered and the design of early detection monitoring. Journal of Theoretical Biology. 305: 30-36.
An improved regulatory sampling method for mapping and representing plant disease from a limited number of samples - (Peer Reviewed Journal)
Luo, W., Pietravalle, S., Parnell, S., Van Den Bosch, F., Gottwald, T.R., Irey, M.S., Parker, S.R. 2012. An improved regulatory sampling method for mapping and representing plant disease from a limited number of samples. Elsevier. 4:68-77.
Inconsequential Effect of Nutritional Treatments on Huanglongbing Control, Fruit Quality, Bacterial Titer and Disease Progress Reprint Icon - (Peer Reviewed Journal)
Gottwald, T.R., Graham, J.H., Mccollum, T.G., Wood, B.W. 2012. Inconsequential Effect of Nutritional Treatments on Huanglongbing Control, Fruit Quality, Bacterial Titer and Disease Progress. Crop Protection Journal. 36:73-82.
Transmission of Citrus leprosis virus C by Brevipalpus phoenicis (Geijskes) to Alternative Host Plants Found in Citrus Orchards Reprint Icon - (Peer Reviewed Journal)
Nunes, M.A., De Oliveira, C.L., De Oliveria, M.L., Kitajima, E., Hilf, M.E., Gottwald, T.R., Freitas-Astua, J. 2012. Transmission of Citrus leprosis virus C by Brevipalpus phoenicis (Geijskes) to Alternative Host Plants Found in Citrus Orchards. Plant Disease. 96:968-972.
Short distance dispersal of splashed bacteria of Xanthomonas citri subsp. citri from canker-infected grapefruit tree canopies in turbulent wind - (Peer Reviewed Journal)
Bock, C.H., Cook, A.Z., Parker, P.E., Gottwald, T.R., Graham, J.H. 2012. Short distance dispersal of splashed bacteria of Xanthomonas citri subsp. citri from canker-infected grapefruit tree canopies in turbulent wind. Plant Pathology. 61:829-836.
The effect of wind on dispersal of splash-borne Xanthomonas citri subsp citri at different heights and distances downwind of canker-infected grapefruit trees - (Peer Reviewed Journal)
Bock, C.H., Gottwald, T.R., Cook, A.Z., Parker, P.E., Graham, J.H. 2012. The effect of wind on dispersal of splash-borne Xanthomonas citri subsp citri at different heights and distances downwind of canker-infected grapefruit trees. Journal of Plant Pathology. 93:667-677.
Processess involved in the dispersal of Xanthomonas citri pv. citri from canker-infected citrus canopies, and in the infection of citrus foliage - (Proceedings)
Bock, C.H., Gottwald, T.R. 2011. Processess involved in the dispersal of Xanthomonas citri pv. citri from canker-infected citrus canopies, and in the infection of citrus foliage. In: Proceedings of the Workshop on Xanthomonas citri/Citrus canker, November 17-18, 2011, Ribeirao Preto, Brazil. p. 27-30.
A survey of survival and activity of citrus canker lesion populations on foliage, fruit and shoots in a Florida grapefruit orchard in 2009 and 2010 - (Proceedings)
Bock, C.H., Gottwald, T.R., Graham, J.H. 2011. A survey of survival and activity of citrus canker lesion populations on foliage, fruit and shoots in a Florida grapefruit orchard in 2009 and 2010. In: Proceedings of the Workshop on Xanthomonas citri/Citrus canker, November, 17-18, 2011, Ribeirao Preto, Brazil. p. 24-26.
Processes involved in the dispersal of Xanthomonas citri pv. citri from canker-infectd citrus canopies, and in the infection of citrus foliage - (Proceedings)
Bock, Clive H., Gottwald, Timothy R. 2011. Processes involved in the dispersal of Xanthomonas citri pv. citri from canker-infectd citrus canopies, and in the infection of citrus foliage. In: Proceedings of the Workshop on Xanthomonas citri/Citrus canker, November 17-18, 2011, Ribeirao Preto, Brazil. p. 27-30.
Processess involved in the dispersal of Xanthomonas citri pv. citri from canker-infected citrus canopies, and in the infection of citrus foliage - (Proceedings)
Bock, C.H., Gottwald, T.R. 2011. Processess involved in the dispersal of Xanthomonas citri pv. citri from canker-infected citrus canopies, and in the infection of citrus foliage. In: Proceedings of the Workshop on Xanthomonas citri/Citrus canker, November 17-18, 2011, Ribeirao Preto, Brazil. p. 27-30.
Rapid screening of huanglongbing-infected citrus leaves by near infrared reflectance spectroscopy - (Peer Reviewed Journal)
Windham, W.R., Poole, G.H., Park, B., Heitschmidt, G.W., Albano, J.P., Gottwald, T.R., Lawrence, K.C., Hawkins, S.A. 2011. Rapid screening of huanglongbing-infected citrus leaves by near infrared reflectance spectroscopy. Transactions of the ASABE. 54(6):2253-2258.
Pest management practices aimed at curtailing citrus huanglongbing disease - (Review Article)
Hall, D.G., Gottwald, T.R. 2011. Pest management practices aimed at curtailing citrus huanglongbing disease. Outlooks on Pest Management. 22(4):189-192.
A stochastic optimisation method to estimate the spatial distribution of a pathogen from a sample. - (Peer Reviewed Journal)
Parnell, S., Gottwald, T.R., Irey, M., Van Den Bosch, F. 2011. A stochastic optimisation method to estimate the spatial distribution of an invasive plant pathogen. Journal of Phytopathology. 101:1184-1190.
Activity of citrus canker lesions on leaves, shoots and fruit of grapefruit in a Florida orchard from June 2010 to January 2011 - (Abstract Only)
Bock, C.H., Gottwald, T.R., Graham, T.H. 2011. Activity of citrus canker lesions on leaves, shoots and fruit of grapefruit in a Florida orchard from June 2010 to January 2011 [abstract]. Phytopathology. 101:S17.
Regulating the ubiquitousRegulating the ubiquitous - (Abstract Only) - (15-Mar-11)
Distribution of canker lesions on the surface of diseased grapefruit - (Peer Reviewed Journal)
Bock, C.H., Parker, P.E., Gottwald, T.R. 2011. Distribution of canker lesions on the surface of diseased grapefruit. Plant Pathology. 60:986-991.
Infection and decontamination of citrus-canker-inoculated leaf surfaces - (Peer Reviewed Journal)
Bock, C.H., Parker, P. E., Cook, A. Z., Graham, J. H. and Gottwald, T. R. Infection and decontamination of citrus canker-inoculated leaf surfaces. Crop Protection 30: 259-264. 2011.
Exacerbation of citrus canker by citrus leafminer, Phyllocnistis citrella in Florida - (Peer Reviewed Journal)
Hall, D.G., Gottwald, T.R., Bock, C.H. 2010. Exacerbation of citrus canker by citrus leafminer, Phyllocnistis citrella in Florida. Florida Entomologist. 93:558-566.
A Perspective of Research on HLB and its Vector in the United States - (Proceedings)
Hall, D.G., Gottwald, T.R., Arnold, C.E. 2010. A Perspective of Research on HLB and its Vector in the United States. In: Proceedings of North American Plant Protection Organization, Second Taller Internacional Sobre Huanglongbing y el Psilido Asiatico de los Citricos, July 19 - 23, 2010, Merida, Mexico.
Near-Infrared Spectroscopy for discrimination of huanglongbing-infected citrus leaves from uninfected leaves - (Proceedings)
Windham, W.R., Poole, G.H., Park, B., Heitschmidt, G.W., Gottwald, T.R., Lawrence, K.C. 2011. Near-Infrared Spectroscopy for discrimination of huanglongbing-infected citrus leaves from uninfected leaves. Proc. the 14th International Conference on NIR Spectroscopy: 235-239.
Near-infrared spectroscopy for discrimination of Huanglongbing-infected citrus leaves from unifected leaves - (Abstract Only)
Windham, W.R., Poole, G.H., Park, B., Heitschmidt, G.W., Gottwald, T.R., Lawrence, K.C. 2010. Near-infrared spectroscopy for discrimination of Huanglongbing-infected citrus leaves from unifected leaves. American Society of Agricultural and Biological Engineers.
Emerging infectious plant diseases - (Book / Chapter)
Fletcher, J., Luster, D.G., Bostock, R., Burans, J., Cardwell, K., Gottwald, T.R., Mcdaniel, L., Royer, M., Smith, K. 2010. Emerging infectious plant diseases. Emerging Infections. doi: 10.1128/9781555816803.ch18.
Distribution of canker lesions on grapefruit in Florida - (Abstract Only)
Bock, C.H., Parker, P.E., Gottwald, T.R. 2010. Distribution of canker lesions on grapefruit in Florida [abstract]. Phytopathology. 100:S15.
The activity of citrus canker lseions on grapefruit in Florida, June 2009-January 2010 - (Abstract Only)
Bock, C.H., Parker, P.E., Gottwald, T.R., Graham, J.H. 2010. The activity of citrus canker lesions on grapefruit in Florida, June 2009-January 2010 [abstract]. Phytopathology. 100:S15.
Comparison of FTIR spectra between huanglongbing (citrus greening) and other citrus maladies - (Peer Reviewed Journal)
Hawkins, S.A., Park, B., Poole, G.H., Gottwald, T.R., Windham, W.R., Albano, J.P., Lawrence, K.C. 2010. Comparison of FTIR spectra between huanglongbing (citrus greening) and other citrus maladies. Journal of Agricultural and Food Chemistry. 58(10):6007-6010.
Wind speed and wind-associated leaf injury affect severity of citrus canker on Swingle citrumelo - (Peer Reviewed Journal)
Bock, C.H., Graham, J.H., Gottwald, T.R., Cook, A.Z., Parker, P.E. 2010. Wind speed and wind-associated leaf injury affect severity of citrus canker on Swingle citrumelo. European Journal of Plant Pathology. 128:21-38.
Current Epidemiological Understanding of Citrus Huanglongbing - (Peer Reviewed Journal)
Gottwald, T.R. 2010. CURRENT EPIDEMIOLOGICAL UNDERSTANDING OF CITRUS HUANGLONGBING. Annual Review of Phytopathology. 48:119-139.
Annual and Polyetic Progression of Citrus Canker on Trees Protected with Copper Sprays - (Peer Reviewed Journal)
Behlau, F., Amorim, L., Belasque Jr., J., Bergamin Filho, A., Leite Jr., R., Gottwald, T.R. 2010. ANNUAL AND POLYETIC PROGRESSION OF CITRUS CANKER ON TREES PROTECTED WITH COPPER SPRAYS. Plant Pathology. DOI: 10.1111/j.1365-3059.2010.02344.x
Wind speed effects on the quantity of Xanthomonas citri subsp. citri dispersed downwind from canopies of grapefruit trees infected with citrus canker - (Peer Reviewed Journal)
Bock, C.H., Graham, J.H., Gottwald, T.R., Cook, A.Z., Parker, P.E. 2010. Wind speed effects on the quantity of Xanthomonas citri subsp. citri dispersed downwind from canopies of grapefruit trees infected with citrus canker. Plant Disease. 94:725-736.
Visible/near-infrared spectroscopy for discrimination of HLB-infected citrus leaves from healthy leaves - (Abstract Only) - (05-Dec-09)
Identification of citrus greening disease using FTIR spectroscopy and chemometric analysis - (Abstract Only)
Hawkins, S.A., Park, B., Poole, G.H., Gottwald, T.R., Windham, W.R., Lawrence, K.C. 2009. Identification of Citrus Greening Disease Using FTIR Spectroscopy and Chemometric Analysis. ASABE Annual International Meeting.
Estimation of plant disease severity visually, by digital photography and image analysis, and by hyperspectral imaging - (Peer Reviewed Journal)
Bock, C., Poole, G.H., Parker, P., Gottwald, T.R. 2010. Estimation of plant disease severity visually, by digital photography and image analysis, and by hyperspectral imaging. Critical Reviews in Plant Sciences. 29:59-107
Detection of Citrus Huanglongbing by Fourier Transform Infrared-Attenuated Total Reflection (FTIR-ATR) Spectroscopy - (Peer Reviewed Journal)
Hawkins, S.A., Park, B., Poole, G.H., Gottwald, T.R., Windham, W.R., Lawrence, K.C. 2010. Detection of Citrus Huanglongbing by Fourier Transform Infrared-Attenuated Total Reflection (FTIR-ATR) Spectroscopy. Applied Spectroscopy. 64:100-103.
Some consequences of using the Horsfall-Barratt scale for hypothesis testing - (Peer Reviewed Journal)
Bock, C., Gottwald, T.R., Parker, P., Ferrandino, F., Welham, S. 2010. Some consequences of using the Horsfall-Barratt scale for hypothesis testing. Phytopathology. 100:1030-1041.
Evaluation of Quantitative Real-Time PCR Assays for Detection of Citrus Greening - (Proceedings)
Turechek, W., Gottwald, T.R., Hartung, J.S., Hilf, M.E., Keremane, M.L., Lin, H., Shatters, R.G., Irey, M., Sieburth, P., Brlansky, R., Dagraca, J., Graham, J., Kunta, M., Roberts, P., Rogers, M., Sun, X., Wang, N. 2009. Evaluation of Quantitative Real-Time PCR Assays for Detection of Citrus Greening. Workshop Proceedings. 158-160.
Optimal strategies for the eradication of Asiatic citrus canker in heterogeneous host landscapes Reprint Icon - (Peer Reviewed Journal)
Parnell, S., Gottwald, T.R., Van Den Bosch, F., Gilligan, C. 2009. Optimal strategies for the eradication of Asiatic citrus canker in heterogeneous host landscapes. Phytopathology.
Disadvantages of the Horsfall-Barratt Scale for estimating severity of citrus canker - (Proceedings)
Bock, C., Gottwald, T.R., Parker, P., Ferrandino, F., Welham, S., Van Den Bosch, F., Parnell, S. 2009. Disadvantages of the Horsfall-Barratt Scale for estimating severity of citrus canker. American Phytopathological Society Annual Meeting. 98:S23.
Some consequences of using the Horsfall-Barratt scale for estimating disease severity compared to nearest percent estimation - (Proceedings)
Bock, C.H., Gottwald, T.R., Parker, P.E., Ferrandino, F., Welham, S., Van Den Bosch, F., Parnell, S. 2009. Proceedings of the 10th International Workshop on Plant Disease Epidemiology, Cornell, NY. June 7-12, 2009. Pp 20-22.2009.
The effect of landscape pattern on the optimal eradication zone of an invading epidemic - (Peer Reviewed Journal)
Parnell, S., Gilligan, C., Gottwald, T.R., Cunniffe, N., Van Den Bosch, F. 2009. The effect of landscape pattern on the optimal eradication zone of an invading epidemic. Phytopathology. Vol. 100, No. 7:638-644.
Estimating the spatial distribution of a plant disease epidemic from a sample - (Proceedings)
Gottwald, T.R., Irey, M., Van Den Bosch, F. 2009. Estimating the spatial distribution of a plant disease epidemic from a sample. Workshop Proceedings.
Automated image analysis of the severity of foliar citrus canker symptoms - (Peer Reviewed Journal)
Bock, C., Parker, P., Cook, A., Gottwald, T.R. 2009. Automated image analysis of the severity of foliar citrus canker symptoms. Plant Disease. 93:660-665
Comparison of Assessment of Citrus Canker Foliar Symptoms by Experienced and Inexperienced Raters - (Peer Reviewed Journal)
Bock, C., Parker, P., Cook, A., Riley, T., Gottwald, T.R. 2009. Comparison of Assessment of Citrus Canker Foliar Symptoms by Experienced and Inexperienced Raters. Plant Disease. 93:412-424.
The epidemiological significance of post-packinghouse survival of Xanthomonas citri ssp. citri for dissemination of Asiatic citrus canker via infected fruit - (Peer Reviewed Journal)
Gottwald, T.R., Graham, J., Bock, C., Bonn, G., Civerolo, E.L., Irey, M., Leite, R., Lopez, M., Mccollum, T.G., Parker, P., Ramallo, J., Riley, T., Schubert, T., Stein, B., Taylor, E.L. 2009. The epidemiological significance of post-packinghouse survival of Xanthomonas citri ssp. citri for dissemination of Asiatic citrus canker via infected fruit. Crop Protection. 29:508-524.
Complete Genome sequence of citrus huanglongbing bacterium, ‘Candidatus Liberibacter asiaticus’ obtained through metagenomics - (Peer Reviewed Journal)
Duan, Y., Zhou, L., Hall, D.G., Li, W., Doddapaneni, H., Lin, H., Liu, L., Gabriel, D., Vahling, C.M., Williams, K., Dickerman, A., Sun, Y., Gottwald, T.R. 2009. Complete Genome sequence of citrus huanglongbing bacterium, ‘Candidatus Liberibacter asiaticus’ obtained through metagenomics. Molecular Plant-Microbe Interactions. 22(8):1011-1020.
Horsfall-Barratt recalibration and replicated severity estimates of citrus canker - (Peer Reviewed Journal)
Bock, C., Gottwald, T.R., Parker, P., Ferrandino, F., Parnell, S., Van Den Bosch, F. 2009. Horsfall-Barratt recalibration and replicated severity estimates of citrus canker . European Journal of Plant Pathology. 125:23-38.
Investigations of the effect of guava as a possible tool in the control/management of Huanglongbing - (Proceedings)
Gottwald, T.R., Hall, D.G., Beattie, G., Bar-Joseph, M., Lapointe, S.L., Stover, E.W., Parker, P., Mccollum, T.G., Hilf, M.E. 2010. Investigations of the effect of guava as a possible tool in the control/management of Huanglongbing. International Organization of Citrus Virologists Proceedings.
Spatio-temporal analysis of an HLB epidemic in Florida and implications for spread. - (Proceedings)
Gottwald, T.R., Irey, M., Gast, T., Parnell, S., Taylor, E.L., Hilf, M.E. 2010. Spatio-temporal analysis of an HLB epidemic in Florida and implications for spread.. International Organization of Citrus Virologists Proceedings.
Bacterial brown leaf spot of citrus, a new disease caused by Burkholderia andropogonis - (Peer Reviewed Journal)
Duan, Y., Sun, X., Zhou, L., Gabriel, D., Benyon, L.S., Gottwald, T.R. 2008. Bacterial brown leaf spot of citrus, a new disease caused by Burkholderia andropogonis. Plant Disease. 93:607-614.
Greenhouse investigations on the effect of guava on infestations of Asian citrus psyllid in grapefruit Reprint Icon - (Peer Reviewed Journal)
Hall, D.G., Gottwald, T.R., Nguyen, N.C., Ichinose, K., Le, Q.D., Beattie, G.A.C., Stover, E. 2008. Greenhouse investigations on the effect of guava on infestations of Asian citrus psyllid in grapefruit. Proceedings Florida State Horticultural Society. 121:104-109
Efficacy of Cankerguard® Sprays for Effective Decontamination of Citrus Canker - (Abstract Only)
Bock, C., Parker, P., Cook, A., Graham, J., Gottwald, T.R. 2008. Efficacy of Cankerguard® Sprays for Effective Decontamination of Citrus Canker. Phytopathology. 99:S13.
Genome sequence of Candidatus Liberibacter asiaticus, the casual agent of citrus huanglongbing (greening) - (Abstract Only) - (01-Jun-08)
Visual rating and the use of image analysis for assessing different symptoms of citrus canker on grapefruit leaves - (Peer Reviewed Journal)
Bock, C.H., Parker, P., Cook, A., Gottwald, T.R. 2008. Visual rating and the use of image analysis for assessing different symptoms of citrus canker on grapefruit leaves. Plant Disease. 92:530-541.
Characteristics of the perception of different severity measures of citrus canker and the relations between the various symptom types - (Peer Reviewed Journal)
Bock, C.H., Parker, P., Cook, A., Gottwald, T.R. 2008. Characteristics of the perception of different severity measures of citrus canker and the relations between the various symptom types. Plant Disease. 92:927-939.
Science-based Regulatory Decisions. - (Abstract Only)
Gottwald, T.R. 2008. Science-based Regulatory Decisions.. Phytopathology. 98:S196
Constructing the effect of alternative intervention strategies on historic epidemics - (Peer Reviewed Journal)
Cook, A., Gibson, G., Gottwald, T.R., Gilligan, C. 2008. Constructing the effect of alternative intervention strategies on historic epidemics. Proceedings of the Royal Society of London B. doi:10.1098/rsif.2008.0030
Automating the assessment of citrus canker symptoms with image analysis - (Abstract Only)
Cook, A., Bock, C.H., Parker, P.E., Gottwald, T.R. 2008. Automating the assessment of citrus canker symptoms with image analysis. Phytopathology. 98:S41
Analysis of fire blight shott infection epidemics on apple - (Peer Reviewed Journal)
Biggs, A., Turechek, W., Gottwald, T.R. 2008. Analysis of fire blight shott infection epidemics on apple. Plant Disease. 92:1349-1356.
Guava SSR analysis: Diversity assessment and similarity to accessions associated with reducing citrus greening in Vietnam - (Abstract Only)
Stover, E.W., Gottwald, T.R., Hall, D.G., Aradhya, M.K., Zee, F.T., Crane, J. 2008. Guava SSR analysis: Diversity assessment and similarity to accessions associated with reducing citrus greening in Vietnam. HortScience. 43:1119.
Seed transmission of Candidatus Liberibacter asiaticus in periwinkle and dodder resulted in low bacterial titer and very mild disease in periwinkle - (Abstract Only) - (13-Mar-08)
A unique disease phenotype -‘yellow shoot without blotchy mottle’ was associated with a low titer of Candidatus Liberibacter asiaticus in Florida - (Abstract Only) - (13-Mar-08)
Dispersal of Xanthomonas citri subsp. citri bacteria downwind from harvested, infected fruit - (Peer Reviewed Journal)
Parker, P., Bock, C., Cook, A., Gottwald, T.R. 2008. Dispersal of Xanthomonas citri subsp. citri bacteria downwind from harvested, infected fruit. Phytopathology. 98:S121
Characteristics of Multi-rater Estimates of Citrus Canker Severity - (Abstract Only)
Bock, C.H., Parker, P.E., Cook, A., Riley, T., Gottwald, T.R. 2008. Characteristics of Multi-rater Estimates of Citrus Canker Severity. Phytopathology. 98:S23.
Effects of radiation (Cobalt-60) on the elimination of Brevipalpus phoenicis (Acari: Tenuipalpidae) Cardinum endosymbiont - (Peer Reviewed Journal)
Novelli, V., Freitas-Astua, J., Segatti, N., Mineiro, J., Arthur, V., Bastaniel, M., Hilf, M.E., Gottwald, T.R., Machado, M. 2008. Effects of radiation (Cobalt-60) on the elimination of Brevipalpus phoenicis (Acari: Tenuipalpidae) Cardinum endosymbiont. Experimental and Applied Acarology. DOI 10.1007/s10493-008-9176-4.
First Report of Dodder Transmission of Candidatus Liberibacter asiaticus to Tomato (Lycopersicon esculentum) - (Peer Reviewed Journal)
Duan, Y., Zhou, L., Gottwald, T.R., Gabriel, D. 2008. First Report of Dodder Transmission of Candidatus Liberibacter asiaticus to Tomato (Lycopersicon esculentum). Plant Disease. 92:831.
Copper Sprays and Windbreaks for Control of Citrus Canker on Young Orange Trees in Southern Brazil - (Peer Reviewed Journal)
Behlau, F., Belasque Jr., J., Bergamin-Filho, A., Graham, J., Leite, Jr., R., Gottwald, T.R. 2008. Copper Sprays and Windbreaks for Control of Citrus Canker on Young Orange Trees in Southern Brazil. Crop Protection Journal. 27:807-813.
Constructing the effect of alternative intervention strategies on historic epidemics - (Review Article)
Cook, A., Gibson, G., Gottwald, T.R., Gilligan, C. 2008. Constructing the effect of alternative intervention strategies on historic epidemics. Journal of the Royal Society Interface, 5:1203-1213. doi:10.1098/rsif.2008.0030
Citrus Canker and Citrus Huanglongbing, Two Exotic Bacterial Diseases Threatening the Citrus Industries of the Western Hemisphere - (Peer Reviewed Journal)
Gottwald, T.R. 2007. Citrus Canker and Citrus Huanglongbing, Two Exotic Bacterial Diseases Threatening the Citrus Industries of the Western Hemisphere. Outlooks on Pest Management. 18(6):274-9.
Influence of the Brevipalpus phoenicis endosymbiont Cardinium sp. in the transmission of Citrus leprosis virus. - (Abstract Only) - (10-Aug-07)
Intercropping of citrus and guava trees for management of Huanglongbing - (Abstract Only)
Hall, D.G., Gottwald, T.R., Nguyen, C.M., Ichinose, K., Le, D.Q., Beattie, A. 2007. Intercropping of citrus and guava trees for management of Huanglongbing [abstract]. Florida Entomological Society Annual Meeting, July 15-18, 2007, Sarasota, Florida. Paper No. 72.
Citrus Huanglongbing: The Pathogen and Its Impact - (Peer Reviewed Journal)
Gottwald, T.R., Da Graca, J.V., Bassanezi, R.B. 2007. Citrus Huanglongbing: The Pathogen and Its Impact. Plant Health Progress. Online: doi:10.1094/PHP-2007-0906-01-RV.
Large-scale surveys for multiple pest species; the search for citrus canker and huanglongbing in Florida - (Abstract Only)
Parnell, S.R., Riley, T., Gottwald, T.R. 2007. Large-scale surveys for multiple pest species; the search for citrus canker and huanglongbing in Florida. American Phytopathological Society Annual Meeting.
Post-Hurricane Analysis of Citrus Canker Ii: Predictive Model Estimation of Disease Spread and Area Potentially Impacted by Various Eradication Protocols Following Catastrophic Weather Events - (Peer Reviewed Journal)
Gottwald, T.R., Irey, M.S. 2007. Post-hurricane analysis of citrus canker ii: predictive model estimation of disease spread and area potentially impacted by various eradication protocols following catastrophic weather events. Plant Health Progress. doi:10.1094/PHP-2007-0405-01-RS.
Spatial Pattern Analysis of Citrus Canker Infected Plantings in São Paulo Brazil and Implication of the Asian Leafminer on the Potential Dispersal Processes - (Peer Reviewed Journal)
Gottwald, T.R., Bassanezi, R., Amorim, L., Bergamin-Filho, A. 2007. Spatial pattern analysis of citrus canker infected plantings in São Paulo, Brazil and implication of the asian leafminer on the potential dispersal processes. Phytopathology. 97:674-683.
Influence of the Storage Period and Number of Individuals on the Detection of False Spider Mite Endosymbionts - (Peer Reviewed Journal)
Novelli, V., Freitas-Astua, J., Arrivabem, F., Locali, E., Hilf, M.E., Gottwald, T.R., Machado, M. 2007. Influence of the storage period and number of individuals on the detection of false spider mite endosymbionts. Experimental and Applied Acarology. 42:17-21.
Concepts in Huanglongbing Epidemiology - (Proceedings)
Gottwald, T.R., Bergamin Filho, A., Bassanezi, R., Irey, M., Zhao, X., Aubert, B. 2007. Concepts in Huanglongbing Epidemiology. Symposium Proceedings.
Concepts in Huanglongbing Epidemiology - (Abstract Only)
Gottwald, T.R., Bergamin Filho, A., Bassanezi, R., Irey, M., Zhao, X., Aubert, B. 2006. Concepts in Huanglongbing Epidemiology. Meeting Abstract.
Prospects for Control of Citrus Canker with Novel Chemical Compounds - (Peer Reviewed Journal) - (07-Aug-06)
Florida actions toward HLB control - (Proceedings)
Gottwald, T.R., Dixon, T. 2006. Florida actions toward HLB control. Proceedings of the International Workshop on Citrus Greening, July 14-21, Ribeiro Preto, Brazil. p.67-68.
Huanglongbing: The dragon arrives in the USA - (Proceedings)
Gottwald, T.R., Dixon, W., Parnell, S.R., Riley, T. 2006. Huanglongbing: The dragon arrives in the USA. Huanglongbing-greening International Workshop, July 14-21, Ribeiro Preto, Brazil. P13-14.
Huanglongbing Epidemiology: An international perspective - (Proceedings)
Gottwald, T.R., Aubert, B., Zhao, X., Bergamin-Filho, A., Bassanezi, R., Amorim, L. 2006. Huanglongbing Epidemiology: An international perspective. Proceedings of Huanglongbing-greening International Workshop, July 14-21, 2006, Ribeiro Preto, Brazil. P. 35-36.
Sensitivity of Pcr-Based Methods for Detection of Asiatic Strain of the Huanglongbing Bacterium in Symptomatic and Asymptomatic Citrus Tissues - (Proceedings)
Irey, M.S., Gast, T., Gottwald, T.R. 2006. Sensitivity of pcr-based methods for detection of asiatic strain of the huanglongbing bacterium in symptomatic and asymptomatic citrus tissues. Meeting Abstract. Proceedings of the Huanglongbing-greening International Workshop, July 14-21, 2006, Ribeiro Preto, Brazil. P. 19-20.
Epidemiology of Huanglongbing in Sao Paulo - (Abstract Only)
Bassanezi, R., Bergamin Filho, A., Amorim, L., Gottwald, T.R. 2006. Epidemiology of Huanglongbing in Sao Paulo. Huanglongbing-greening International Workshop, July 14-21, 2006, Ribeiro Preto, Brazil. P.37-38.
Post-Hurricane Analysis of Citrus Canker Spread and Progress Towards the Development of a Predictive Model for Future Weather Related Spread - (Peer Reviewed Journal)
Irey, M.S., Gottwald, T.R., Graham, J., Riley, T., Carlton, G. 2006. Post-hurricane analysis of citrus canker spread and progress towards the development of a predictive model for future weather related spread. Plant Health Progress.
Linkages between early detection and early response to invasive pathogens - (Peer Reviewed Journal)
Gottwald, T.R. 2006. Linkages between early detection and early response to invasive pathogens. Phytopathology. 96(6):(Supplement)S1144
Incorporation of Distance-of-Spread Calculations into a Weather-Based Model Describing Disease Distribution after Severe Weather Events - (Abstract Only)
Irey, M.S., Gottwald, T.R. 2006. Incorporation of distance-of-spread calculations into a weather-based model describing disease distribution after severe weather events. Phytopathology. 96(6): (Supplement) S152.
Comparison of Visual Assessment to Polymerase Chain Reaction Assay Testing to Estimate the Incidence of the Huanglongbing Pathogen in Commercial Plantings in Florida - (Peer Reviewed Journal)
Irey, M.S., Gast, T., Gottwald, T.R. 2006. Comparison of visual assessment to polymerase chain reaction assay testing to estimate the incidence of the huanglongbing pathogen in commercial plantings in florida. Proceedings of Florida State Horticultural Society. 42:17-21.
Repeatability and Comparision of Image Analysis and Visual Assessment for Disease Assessment of Citrus Canker - (Peer Reviewed Journal)
Bock, C., Parker, P., Cook, A., Gottwald, T.R. 2006. Repeatability and comparision of image analysis and visual assessment for disease assessment of citrus canker. Phytopathology. 96(6): (Supplement) S13-14.
Factors affecting infection of citrus with Xanthomonas axonopodis pv citri. - (Peer Reviewed Journal)
Bock, C., Parker, P., Cook, A., Gottwald, T.R. 2006. Factors affecting infection of citrus with Xanthomonas axonopodis pv citri.. Phytopathology. 96(6):Supplement S14.
The decline in quantity of bacteria of Xanthomonas axonopodis pv citri dispersed from canker-infected citrus plants during wind/rain events - (Peer Reviewed Journal)
Bock, C., Parker, P., Cook, A., Gottwald, T.R. 2006. The decline in quantity of bacteria of Xanthomonas axonopodis pv citri dispersed from canker-infected citrus plants during wind/rain events. Phytopathology. 96(6): Supplement S13.
Screening Citrus Germplasm for Resistance to Xanthormonos Axonopodis PV.CTRI - (Abstract Only)
Mccollum, T.G., Bowman, K.D., Gottwald, T.R. 2006. Screening citrus germplasm for resistance to xanthormonos axonopodis pv.ctri.[abstract]HortScience. 41:1048-1049.
Rt-Pcr Detection of Citrus Leprosis Virus in Shrubs and Weed Plants Infected Through Brevipalpus Phoenicis (Acari: Tenuipalpidae) - (Proceedings)
Nunes, M., Freitas-Astua, J., Kitajima, E., Hilf, M.E., Gottwald, T.R., De Oliveira, C. 2006. Rt-pcr detection of citrus leprosis virus in shrubs and weed plants infected through brevipalpus phoenicis (acari: tenuipalpidae). Congresso Brasileiro de Entomologia Proceedings.
Influência da presença de endossimbionte em Brevipalpus phoenicis na aquisição e transmissão do vírus da leprose dos citros. - (Peer Reviewed Journal)
Novelli, V., Freitas-Astua, J., Arrivabem, F., Locali, E., Hilf, M.E., Gottwald, T.R., Machado, M. 2006. Influência da presença de endossimbionte em Brevipalpus phoenicis na aquisição e transmissão do vírus da leprose dos citros.. Fitopatologia.
Prevalência DE Endossimbiontes Cardinium Em Populações DE Ácaros Brevipalpus Phoenicis DE Diferentes Regiões Brasileiras. - (Proceedings)
Novelli, V., Freitas-Astua, J., Rodrigues, V., Navia, D., Silva, L., Muller, G., Hilf, M.E., Gottwald, T.R., Machado, M. 2006. Prevalência de endossimbiontes cardinium em populações de ácaros brevipalpus phoenicis de diferentes regiões brasileiras.. Congresso Brasileiro de Entomologia Proceedings.
Screening Citrus Germplasm for Resistance to Xanthomonas Anonopodis Pv. Citri - (Proceedings)
Mccollum, T.G., Bowman, K.D., Gottwald, T.R. 2006. Screening citrus germplasm for resistance to xanthomonas anonopodis pv. citri. Hortscience Proceedings.41:1048-1049
Avaliação Da Presença DE Endossimbiontes Cardinium Em Diferentes Espécies DE Artrópodes. - (Proceedings)
Novelli, V., Freitas-Astua, J., Arrvabem, F., Mineiro, J., Sato, M., Hilf, M.E., Gottwald, T.R., Machado, M. 2006. Avaliação da presença de endossimbiontes cardinium em diferentes espécies de artrópodes.. Congresso Brasileiro de Entomologia Proceedings.
O Acaro Vetor Da Leprose Dos Citros (Brevipalpus Phoenicis)e a Interacao Com Endossimbiontes - (Peer Reviewed Journal)
Novelli, V., Freitas-Astua, J., Arrivabem, F., Locali, E., Hilf, M.E., Gottwald, T.R., Machado, M. 2006. O acaro vetor da leprose dos citros (brevipalpus phoenicis)e a interacao com endossimbiontes. LARANJA. 26:2:273-289.
Aps Press Online Lessons in Plant Pathology - Citrus Canker - (Peer Reviewed Journal)
Gottwald, T.R., Graham, J.H. 2005. Aps press online lessons in plant pathology - citrus canker. American Phytopathological Society Press On Line Lessons. DOI: 10.1094/PHI-I-2000-1002-01. (http://www.apsnet.org/education/lessonsPlantPath/CitrusCanker/Top.htm)
Post-Hurricane Analysis of Citrus Canker Spread and Progress Towards the Development of a Predictive Model for Future Weather Related Spread - (Proceedings)
Irey, M.S., Gottwald, T.R., Graham, J., Carlton, G., Riley, T. 2005. Post-hurricane analysis of citrus canker spread and progress towards the development of a predictive model for future weather related spread. Meeting Abstract.
Screening Citrus Germplasm for Resistance to Xanthomonas Axonopodis Pv. Citri - (Proceedings)
Mccollum, T.G., Bowman, K.D., Gottwald, T.R. 2006. Screening citrus germplasm for resistance to xanthomonas axonopodis pv. citri. Second International Research Workshop on Citrus Canker and Huanglongbing, November 2005. P18, p.3.
Huanglongbing Epidemiology: Tracking the Dragon Through Time and Space - (Proceedings)
Gottwald, T.R. 2005. Huanglongbing epidemiology: tracking the dragon through time and space. Second International Citrus Canker and Huanglongbing Workshop, Orlando, FL, November 7-11, 2005. H6, p.53.
Citrus Canker: Doing Battle with the Beast for Nearly a Century - (Abstract Only)
Gottwald, T.R. 2005. Citrus canker: doing battle with the beast for nearly a century. Second International Citrus Canker and Huanglongbing Workshop, Orlando, FL, November 7-11, 2005. C1,p.11.
Estimating the Increase and Spread of Citrus Canker Caused by the Interaction of Pedestrian Versus Catastrophic Weather Events, Humans, and Bad Luck - (Proceedings)
Gottwald, T.R., Graham, J., Riley, T., Sun, X., Hughes, G., Ferrandino, F., Taylor, E.L., Bock, C., Irey, M.S., Gilligan, C., Seem, B. 2005. Estimating the increase and spread of citrus canker caused by the interaction of pedestrian versus catastrophic weather events, humans, and bad luck. Second International Citrus Canker and Huanglongbing Workshop, Orlando, FL, November 7-11, 2005. C3, p. 13.
Spatial Pattern Analysis of Citrus Canker Infected Plantings in Sao Paulo Brazil and Implication of the Asian Leafminer on Potential Dispersal Processes - (Proceedings)
Gottwald, T.R., Bassanezi, R., Amorim, L., Bergamin-Filho, A. 2005. Spatial pattern analysis of citrus canker infected plantings in sao paulo brazil and implication of the asian leafminer on potential dispersal processes. International Citrus Canker and Huanglongbing Workshop, Orlando, FL, Nov 7-11, 2005. C7, p.17.
Post-Hurricane Analysis of Citrus Canker Spread and Progress Towards the Development of a Predictive Model for Future Weather Related Spread - (Proceedings)
Irey, M.S., Gottwald, T.R., Graham, J., Carlton, G., Riley, T. 2005. Post-hurricane analysis of citrus canker spread and progress towards the development of a predictive model for future weather related spread. Proceedings of the International Citrus Canker and Huanglongbing Workshop, Orlando, FL, Nov. 2005. C5, p15.
Construction and Deployment of a Mobile Containment Greenhouse/laboratory - (Proceedings)
Parker, P., Gottwald, T.R., Levy, L., Cook, A. 2005. Construction and deployment of a mobile containment greenhouse/laboratory. Second International Citrus Canker and Huanglongbing Workshop, Orlando, FL, November 7-11, 2005. P12, p.77.
The Change in Quantity of Bacteria of Xanthomonas Axonopodis Pv Citri Dispersed Down Wind from Canker-Infected Grapefruit Trees During a Wind/rain Event - (Proceedings)
Bock, C., Parker, P., Gottwald, T.R. 2005. The change in quantity of bacteria of xanthomonas axonopodis pv citri dispersed down wind from canker-infected grapefruit trees during a wind/rain event. International Citrus Canker and Huanglongbing Workshop, Orlando, FL, Nov. 2005. P13,p.78.
Progress Towards the Development of An Effective Risk Analysis Process for the Florida Citrus Nursery Industry to Mitigate the Impact of Citrus Canker and Huanglongbing - (Proceedings)
Irey, M.S., Graham, J., Gottwald, T.R. 2005. Progress towards the development of an effective risk analysis process for the florida citrus nursery industry to mitigate the impact of citrus canker and huanglongbing. Proceedings from the International Citrus Canker and Huanglongbing Workshop, Orlando, FL, Nov. 2005. P21;p86.
Using Pcr for Detection and Quantification of Xanthomonas Axonopodis Pv Citri in Wind Driven Splash - (Proceedings)
Bock, C., Parker, P., Gottwald, T.R., Mavrodieva, V., Levy, L. 2005. Using pcr for detection and quantification of xanthomonas axonopodis pv citri in wind driven splash. Second International Citrus Canker and Huanglongbing Workshop, Orlando, FL, November 7-11, 2005. C23, p.33.
Wind Speed Effects on the Dispersal of Xanthomonas Axonopodis Pv Citri and Infection of Grapefruit Leaves - (Proceedings)
Bock, C., Parker, P., Cook, A., Gottwald, T.R. 2005. Wind speed effects on the dispersal of xanthomonas axonopodis pv citri and infection of grapefruit leaves. Second International Citrus Canker and Huanglongbing Workshop,Orlando, FL, November 7-11, 2005. C4, p.14.
Distance of Spread of Asian Citrus Canker from Source of Infection in Commercial Plantings in Sao Paulo, Brazil - (Proceedings)
Amorim, L., Jesus Junior, W., Bassanezi, R., Bergamin-Filho, A., Gottwald, T.R. 2005. Distance of spread of asian citrus canker from source of infection in commercial plantings in Sao Paulo, Brazil. International Citrus Canker and Huanglongbing Workshop, Orlando, FL, November 7-11, 2005. C8,p.18.
Spatial Distribution of Huanglongbing Symptomatic Trees in Citrus Groves in Sao Paulo, Brazil - (Proceedings)
Bassanezi, R., Busato, L., Bergamin-Filho, A., Amorim, L., Gottwald, T.R. 2005. Spatial distribution of huanglongbing symptomatic trees in citrus groves in Sao Paulo, Brazil. Second International Citrus Canker and Huanglongbing Workshop, Orlando, FL, November 7-11, 2005. H7,p54.
Epidemiology, Management and Effect on Yield of Citrus Canker under Endemic Conditions in Parana, Brazil - (Proceedings)
Behlau, F., Bergamin-Filho, A., Belasque, Jr., J., Amorim, L., Leite, Jr., R., Gottwald, T.R. 2005. Epidemiology, management and effect on yield of citrus canker under endemic conditions in parana, brazil. Second International Citrus Canker and Huanglongbing Workshop, Orlando, FL, November 7-11, 2005. C12, p.22.
Temporal and Spatial Epidemiology of Phytophthora Root Rot in Fraser Fir Plantations - (Peer Reviewed Journal)
Benson, D., Grand, L., Vernia, C., Gottwald, T.R. 2006. Temporal and spatial epidemiology of phytophthora root rot in fraser fir plantations. Plant Disease. 90:1171-1180.
Comparison of Techniques to Sample Citrus Canker Bacteria (Xanthomonus Axonopodis Pv. Citri) in Wind-Blown Spray - (Peer Reviewed Journal)
Parker, P., Bock, C., Gottwald, T.R. 2005. Comparison of techniques to sample citrus canker bacteria (xanthomonus axonopodis pv. citri) in wind-blown spray. Plant Disease. 89:1324-1330.
Conflicting Agendas of Commercial Growers and Residential Tree Owners During Canker and Plum Pox Eradication Programs - (Peer Reviewed Journal)
Gottwald, T.R. 2005. Conflicting agendas of commercial growers and residential tree owners during canker and plum pox eradication programs. Phytopathology. 95(6):S129.
Long Distance Spread of Citrus Canker Related to Hurricanes and Tropical Storms - (Abstract Only)
Gottwald, T.R., Riley, T.D. 2005. Long distance spread of citrus canker related to hurricanes and tropical storms. Proceedings of Florida State Horticultural Society.
Predicting the Risk of Infection in a Citrus Tristeza Virus Epidemic and Testing for the Intensity of Virus Competition with Survival Analysis - (Abstract Only)
Gottwald, T.R., Taylor, E.L. 2005. Predicting the risk of infection in a Citrus tristeza virus epidemic and testing for the intensity of virus competition with survival analysis. Proceedings of the 9th International Workshop of Plant Disease Epidemiology. C6 p. 53.
Detecting and Quantifying Xanthomonas Axonopodis Pv Citri in Wind Driven Splash - (Abstract Only)
Bock, C.H., Parker, P.E., Gottwald, T.R., Mavrodieva, V.A., Levy, L. 2005. Detecting and quantifying Xanthomonas axonopodis pv. citri in wind driven splash. Phytopathology. 95:6S11.
Spatial-Temporal Dynamics of Citrus Variegated Chlorosis in Sao Paulo State, Brazil - (Proceedings)
Laranjeira, F.F., Bergamin-Filho, A., Amorim, L., Gottwald, T.R., Berger, R.D., Lopes, J.R.S. 2005. Spatial-temporal dynamics of citrus variegated chlorosis in Sao Paulo State, Brazil. Proceedings of the 9th International Workshop on Plant Disease Epidemiology. C8 p. 55.
Image Analysis Versus Visual Assessment of Incidence and Severity of Citrus Canker Symptoms - (Abstract Only)
Bock, C.H., Parker, P.E., Cook, A.Z., Gottwald, T.R. 2005. Image analysis versus visual assessment of incidence and severity of citrus canker symptoms. Phytopathology. 95:6S11.
The Effect of Wind Speed on the Dispersal Plume of Bacteria Downwind from Canker-Infected Grapefruit Trees - (Abstract Only)
Bock, C.H., Parker, P.E., Cook, A.Z., Gottwald, T.R. 2005. The effect of wind speed on the dispersal plume of bacteria downwind from canker-infected grapefruit trees. Phytopathology. 95:6S12.
Reliability of Real-Time Pcr for Detecting and Quantifying Xanthomonas Axonopodis Pv Citri in Wind Driven Splash - (Abstract Only)
Bock, C., Mavrodieva, V., Parker, P., Levy, L., Gottwald, T.R. 2005. Reliability of real-time pcr for detecting and quantifying xanthomonas axonopodis pv citri in wind driven splash. Phytopathology. 95(6):S11.
Using Survival Analysis to Predict the Risk of Infection in a Ctv Epidemic - (Peer Reviewed Journal)
Gottwald, T.R., Taylor, E.L. 2005. Using survival analysis to predict the risk of infection in a ctv epidemic. International Organization of Citrus Virologists Proceedings.
Assessment of the Possibility of Natural Spread of Citrus Psorosis Disease - (Peer Reviewed Journal)
Gottwald, T.R., Palle, S., Miao, H., Seyran, M., Skaria, M., Da Graca, J. 2005. Assessment of the possibility of natural spread of citrus psorosis disease. International Organization of Citrus Virologists Proceedings.
Spatio-Temporal Analysis of Tree Decline Losses among Navel Orange Trees on Swingle Citrumelo Rootstock in Two Central Florida Citrus Groves - (Peer Reviewed Journal)
Castle, W.S., Gottwald, T.R. 2005. Spatio-temporal analysis of tree decline losses among navel orange trees on swingle citrumelo rootstock in two central florida citrus groves. International Organization of Citrus Virologists Proceedings.
Spatial and Temporal Analysis of Citrus Sudden Death in Brazil - (Peer Reviewed Journal)
Bassanezi, R., Bergamin Filho, A., Amorim, L., Gottwald, T.R. 2005. Spatial and temporal analysis of citrus sudden death in brazil. International Organization of Citrus Virologists Proceedings.
Preliminary Spatial Pattern Analysis of Huanglongbing in Sao Paulo, Brazil - (Peer Reviewed Journal)
Bassanezi, R., Busato, L., Bergamin-Filho, A., Amorim, L., Gottwald, T.R. 2005. Preliminary spatial pattern analysis of huanglongbing in sao paulo, brazil. International Organization of Citrus Virologists Proceedings.
Nationwide Detection of Citrus Leprosis Virus in Brazil Using Rt-Pcr - (Peer Reviewed Journal)
Freitas-Astua, J., Locali, E., Antonioli-Luizon, R., Kitajima, E., Hilf, M.E., Gottwald, T.R., Machado, M. 2005. Nationwide detection of citrus leprosis virus in brazil using rt-pcr. International Organization of Citrus Virologists Proceedings.
Widespread Occurrence of An Endosymbiont Bacterium in Brevipalpus Phoenicis Populations in the Southeastern Region of Brazil - (Peer Reviewed Journal)
Novelli, V., Freitas-Astua, J., Astua-Monge, G., Carvalho, S., Locali, E., Rodrigues, V., Arrivaben, F., Hilf, M.E., Gottwald, T.R., Machado, M. 2005. Widespread occurrence of an endosymbiont bacterium in brevipalpus phoenicis populations in the southeastern region of brazil. International Organization of Citrus Virologists Proceedings.
Conflicting Agendas of Commercial Growers and Residential Tree Owners During Canker and Plum Pox Eradication Programs - (Abstract Only)
Gottwald, T.R. 2005. Conflicting agendas of commercial growers and residential tree owners during canker and plum pox eradication programs. Phytopathology. 95:6S129.
The Effect of Hurricanes and Tropical Storms on Long Distance Spread of Citrus Canker - (Abstract Only)
Gottwald, T.R., Riley, T.D. 2005. The effect of hurricanes and tropical storms on long distance spread of citrus canker. Phytopathology. 95:6S36.
Development and Deployment of a Mobile Containment Greenhouse Laboratory (Mcgl) - (Abstract Only)
Parker, P., Gottwald, T.R., Levy, L., Cook, A. 2006. Development and deployment of a mobile containment greenhouse laboratory (mcgl). Phytopathology.
Development and Deployment of a Mobile Containment Greenhouse Laboratory (Mcgl) - (Abstract Only)
Parker, P.E., Gottwald, T.R., Levy, L., Cook, A.Z. 2005. Development and deployment of a mobile containment greenhouse laboratory (MCGL). Phytopathology. 95:6S80.
Detection of Clo (Cytophaga-Like Organism) Endosymbionts in Adults and Eggs of Citrus Leprosis Vectors, Brevipalpus Phoenicis and B. Obovatus - (Abstract Only)
Novelli, V., Freitas-Astua, J., Astua-Monge, G., Carvalho, S., Locali, E., Rodrigues, V., Arrivaben, F., Hilf, M.E., Gottwald, T.R., Machado, M. 2005. Detection of clo (cytophaga-like organism) endosymbionts in adults and eggs of citrus leprosis vectors, brevipalpus phoenicis and b. obovatus. Meeting Abstract.
Nationwide Detection of Citrus Leprosis Virus in Brazil Using Rt-Pcr - (Proceedings)
Freitas-Astua, J., Locali, E., Antonioli-Luizon, R., Kitajima, E., Hilf, M.E., Gottwald, T.R., Machado, M. 2004. Nationwide detection of citrus leprosis virus in brazil using rt-pcr. International Organization of Citrus Virologists Proceedings.
Widespread Occurrence of An Endosymbiont Bacterium in Brevipalpus Phoenicis Populations in the Southeastern Region of Brazil - (Proceedings)
Novelli, V., Freitas-Astua, J., Astua-Monge, G., Carvalho, S., Locali, E., Rodrigues, V., Arrivaben, F., Hilf, M.E., Gottwald, T.R., Machado, M. 2004. Widespread occurrence of an endosymbiont bacterium in brevipalpus phoenicis populations in the southeastern region of Brazil. International Organization of Citrus Virologists Proceedings.
Assessment of the Possibility of Natural Spread of Citrus Psorosis Disease - (Abstract Only)
Gottwald, T.R., Palle, S., Miao, H., Seyran, M., Skaria, M., Da Graca, J. 2004. Assessment of the possibility of natural spread of citrus psorosis disease. International Organization of Citrus Virologists Proceedings.
Using Survival Analysis to Predict the Risk of Infection in a Ctv Epidemic - (Abstract Only)
Gottwald, T.R. 2005. Survival analysis of the spatio-temporal spread of citrus tristeza virus. 9th Biennial Meeting of the Florida Phytopathological Society, 2-4 May, 2005, University of Florida/IFAS, Mid-Florida Research and Education Center, Apopka, FL.
Spatio-Temporal Analysis of Tree Decline Losses among Navel Orange Trees on Swingle Citrumelo Rootstock in Two Central Florida Citrus Groves - (Abstract Only) - (07-Nov-04)
Spatial and Temporal Analyses of Citrus Sudden Death in Brazil - (Peer Reviewed Journal)
Bassanezi, R.B., Bergamin-Filho, A., Amorim, L., Gottwald, T.R. 2005. Spatial and temporal analysis of citrus sudden death in Brazil. Proceedings of the International Organization of Citrus Virologists.
Preliminary Spatial Pattern Analysis of Huanglongbing in Sao Paulo, Brazil - (Abstract Only) - (07-Nov-04)
The Effect of Simulated Wind-Driven Rain on Duration and Distance of Dispersal of Xanthomonas Axonopodis Pv Citri from Canker Infected Citrus Trees - (Peer Reviewed Journal)
Bock, Clive, Parker, Paul, Gottwald, Tim R. 2004. The Effect of Simulated Wind-Driven Rain on Duration and Distance of Dispersal of Xanthomonas Axonopodis pv citri from Canker Infected Citrus Trees. Plant Disease. 89:71-80.
Detection and Characterization of a New Strain of Citrus Canker Bacteria from Key/mexican Lime (Citrus Aurantiifolia) and Alemow (C. Macrophylla) in South Florida - (Abstract Only)
Sun, Xiaoan, Stall, R. E., Cubero, J., Gottwald, T. R., Graham, J. H., Dixon, W. N., Schubert, T. S., Chaloux, P. H., Jones, J. B., Stromberg, V. K., Lacy, G. H., Sutton, B. D. 2004. Detection and Characterization of a New Strain of Citrus Canker Bacteria from Key/Mexican Lime (Citrus Aurantifolia) and Alemow (C. Macrophylla) in South Florida. Phytopathology.
The Effect of Wind on Dispersal of Splash-Borne Bacteria from Canker-Infested Citrus Trees - (Abstract Only)
Bock, C., Parker, P., Gottwald, T.R. 2004. The effect of wind on dispersal of splash-borne bacteria from canker-infested citrus trees. Phytopathology. 94:S9.
The Application of Epidemiological Analyses of Citrus Canker for the Design of Citrus Canker Eradication Procedures in Florida - (Abstract Only)
Gottwald, T., 2004. The Application of Epidemiological Analyses of Citrus Canker for the Design of Citrus Canker Eradication Procedures in Florida.
Xanthomonas Axonopodis Pv. Citri: Factors Affecting Successful Eradication of Citrus Canker - (Peer Reviewed Journal)
Graham, J.H., Gottwald, T.R., Cubero, J., Achor, D. 2004. Xanthomonas axonopodis pv. citri: factors affecting successful eradication of citrus canker. Molecular Plant Pathology. 5: 1-15
Spatial Pattern Analysis of Sharka Disease (Ppv-M Strain) in Peach Orchards in Southern France - (Abstract Only)
Dallot, S., Gottwald, T., Labonne, G., Quiot, J. B. 2003. Spatial Pattern Analysis of Sharka Disease (PPV-M Strain) in Peach Orchards in Southern France. Phytopathology 93:1543
An Overview of the Epidemiology of Citrus Tristeza Virus - (Abstract Only)
Gottwald, T.R. 2004. An overview of the epidemiology of citrus tristeza virus. Phytopathology. 94:S131.
The Application of Epidemiological Analyses of Citrus Canker for the Design of Citrus Canker Eradication Procedures in Florida - (Peer Reviewed Journal)
Gottwald, T.R. 2004. The application of epidemiological analyses of citrus canker for the design of citrus canker eradication procedures in florida. 15th International Plant Protection Congress Proceedings. p. 477.
Mitigating the Post-Introduction Impacts of New and Emerging Agricultural Pathogens - (Abstract Only)
Gottwald, T.R., Kaplan, D. 2004. Mitigating the post-introduction impacts of new and emerging agricultural pathogens. Phytopathology. 94:S130.
Spread of Sharka Disease (Ppv-M Strain) in Peach Orchards Submitted to Roguing in Southern France - (Abstract Only)
Dallot, S., Gottwald, T.R., Labonne, G., Quiot, J. 2004. Spread of Sharka disease (PPV-M strain) in peach orchards submitted to roguing in Southern France. Phytopathology. 94:1390-1398.
The Effect of Wind Speed on Dispersal of Bacteria from Canker-Infected Citrus Trees - (Abstract Only)
Bock, C.H., Parker, P., Gottwald, T.R. 2004. The effect of wind speed on dispersal of bacteria from canker-infected citrus trees. Phytopathology. 94:S9.
Strategies of Sampling for Detection - (Abstract Only)
Hughes, G., Madden, L., Gottwald, T.R. 2004. Strategies of sampling for detection. Phytopathology. 94:S137.
Citrus Canker Symptom Assessment Using Image Analysis - (Abstract Only)
Parker, P., Bock, C., Gottwald, T.R. 2004. Citrus canker symptom assessment using image analysis. Phytopathology. 94:S81.
Huanglongbing (Citrus Greening) Epidemiology - (Book / Chapter) - (04-Aug-03)
Plum Pox - Review of Ppv Epidemiology in North America - (Book / Chapter)
Gottwald, T.R. 2006. Plum pox - review of PPV epidemiology in North America. European and Mediterranean Plant Protection Organization Bulletin. 36:269-286.
Overview of Science/legal Conflicts Raised by Citrus Canker Research and Eradication - (Abstract Only)
Gottwald, T. R. 2003. Overview of Science/Legal Conflicts Raised by Citrus Canker Research and Eradication. American Phytopathological Society Annual Meeting.
Environmental Factors Affecting the Release and Dispersal of Ascospores of Mycosphaerella Citri - (Peer Reviewed Journal)
Mondal, S. N., Gottwald, T. R., Timmer, L. W. 2003. Environmental Factors Affecting the Release and Dispersal of Ascospores of Mycosphaerella Citri. Phytopathology.
Spatial Analysis of the Sharka Disease (Ppv-M) Within Peach Orchards of Southern France Investigated at Various Hierarchical Scales - (Peer Reviewed Journal)
Dallot, Sylvie, Gottwald, Tim R., Labonne, Gerard, Quiot, Jean-Bernard. 2003. Spatial Analysis of the Sharka Disease (PPV-M) Within Peach Orchards of Southern France Investigated at Various Hierarchical Scales. Phytopathology.
Disease Development and Symptom Expression of Xanthomonas Axonopodis Pv. Citri in Various Citrus Plant Tissues. - (Peer Reviewed Journal)
Verniere, C. J., Gottwald, T. R., Pruvost, O. 2003. Disease Development and Symptom Expression of Xanthomonas Axonopodis pv. citri in Various Citrus Plant Tissues. Phytopathology 93:832-843
Techniques to Sample Citrus Canker Bacteria (Xanthomonas Axonopodis Pv. Citri)in Windblown Spray - (Abstract Only)
Parker, P. E., Bock, C. H., Gottwald, T. R. 2003. Techniques to Sample Citrus Canker Bacteria (Xanthomonas Axonopodis pv citri) in Windblown Spray. Phytopathology
Dinamica Espacial Da Clorose Variegada Dos Citros Em Tres Regioes Do Estado DE Sao Paulo - (Peer Reviewed Journal)
Laranjeira, F.F., Bergamin-Filho, A., Amorim, L., Gottwald, T.R. 2004. Fitopatologia Brasileira. 29:056-065.
Comparative Epidemiology of Ctv in Plantings of Various Citrus Species in Costa Rica and Long Distance Spread by the Brown Citrus Aphid - (Peer Reviewed Journal)
Gottwald, T., Villalobos, W., Rivera, C., 2003. Comparative Epidemiology of CTV in Plantings of Various Citrus Species in Costa Rica and Long Distance Spread by the Brown Citrus Aphid. Proceedings of the 15th Conference of the International Organization of Citrus Virologists, 102-116
A Sampling Protocol to Optimize Locating Citrus Tristeza Virus Reservoirs - (Peer Reviewed Journal)
Yokomi, R. K., Polek, M., Satar, S., Gottwald, T. R. 2003. A Sampling Protocol To Optimize Locating Citrus Tristeza Virus Reservoirs. International Organization of Citrus Virologist Proceedings.
Spatial and Temporal Analysis of Citrus Sudden Death As a Tool to Generate Hypotheses Concerning Its Etiology - (Abstract Only)
Bassanezi, R. B., Bergamin-Filho, A., Amorim, L., Gimenes-Fernandes, N., Gottwald, T. R. 2003. Spatial and Temporal Analysis of Citrus Sudden Death as a Tool to Generate Hypotheses Concerning its Etiology. Phytopathology.
Citrus Canker: the Pathogen and Its Impact - (Peer Reviewed Journal)
Gottwald, T. 2002. Citrus Canker: The Pathogen and Its Impact. Plant Health Progress.
Citrus Canker: the Pathogen and Its Impact - (Review Article)
Gottwald, T. 2002. Citrus Canker: The Pathogen and Its Impact. APSNET Plant Pathology Online.
Citrus Canker: Plant Pathology Versus Public Policy - (Peer Reviewed Journal)
Gottwald, T. 2002. Citrus Canker: Plant Pathology Versus Public Policy, Phytopathology.
Citrus Canker: the Pathogen and Its Impact - (Other)
Gottwald, T., 2002. Citrus Canker: The Pathogen and Its Impact. APSNET Plant Pathology Online
Latency of Systemic Infection in Young Field-Grown Sweet Orange Trees Following Graft-Inoculation with Citrus Tristeza Virus - (Peer Reviewed Journal)
Gottwald, T., Garnsey, S. M., Riley, T. D., 2002. Latency of Systemic Infection in Young Field-grown Sweet Orange Trees Following Graft-inoculation with Citrus Tristeza Virus. Proceedings of the 15th Conference of the International Organization of Citrus Virologists
History, Present Incidence, and Spatial Distribution of Citrus Tristeza Virus in the California Central Valley - (Peer Reviewed Journal)
Gottwald, T., Polek, M., Riley, K. M., 2002. History, Present Incidence and Spatial Distribution of Citrus Tristeza Virus in the California Central Valley. Proceedings of the 15th Conference of the International Organization of Citrus Virologists, 83-94.
Effects of Chemical of Aphid Vectors Control and Cross-Protection on the Increase and Spread of Ctv - (Peer Reviewed Journal)
Gottwald, T., Abreu-Rodriguez, E., Yokomi, R., Stansly, P., Riley, T. 2002. Effect of Chemical of Aphid Vectors Control and Cross-Protection on the Increase and Spread of CTV. Proceedings of the 15th Conference of the International Organization of Citrus Virologists, p.117-130.
Survey Methods for Assessment of Citrus Tristeza Virus Incidence in Citrus Nurseries - (Peer Reviewed Journal) - (11-Apr-01)
Emergence and Spread of Severe Strains of Citrus Tristeza Virus in the Dominican Republic - (Proceedings) - (13-Dec-00)
Environmental Factors Affecting Production, Release, and Field Populations of Conidia of Alternaria Alternata, the Cause of Brown Spot of Citrus - (Peer Reviewed Journal) - (03-Aug-98)
The Effect of Irrigation Practices on the Spatio-Temporal Increase of Asiatic Citrus Canker in Simulated Nursery Plots in Reunion Island. - (Peer Reviewed Journal) - (02-Jul-98)
Increase and Patterns of Spread of Citrus Tristeza Virus Infections in Costa Rica and the Dominican Republic in the Presence of the Brown Citrus Aphid, Toxoptera Citricida - (Peer Reviewed Journal) - (24-Mar-98)
Towards the Improvement of Citrus Canker Control in Reunion Island - (Peer Reviewed Journal) - (22-Oct-97)
Citrus Canker in Urban Miami: An Analysis of Spread and Prognosis for the Future - (Trade Journal) - (01-Jul-97)
A Computer-Controlled Environmental Chamber for the Study of Aerial Fungal Spore Release. - (Peer Reviewed Journal) - (29-May-97)
Exacerbation of Citrus Bacterial Spot Disease by Stomatal Flooding Caused by the Use of Spray Adjuvants - (Peer Reviewed Journal) - (28-May-97)
Differential Effects of Toxoptera Citricida Vs. Aphis Gossypii on Temporal Increase and Spatial Patterns of Spread of Citrus Tristeza - (Proceedings) - (22-May-97)
Co-Diffusion of Serologically Distinct Isolates of Citrus Tristeza Virus Vectored by Toxoptera Citricida in Northern Costa Rica - (Proceedings) - (22-May-97)
Rapid Dissemination of Mild Isolates of Citrus Tristeza Virus Following Introduction of Toxoptera Citricida in the Dominican Republic - (Proceedings) - (22-May-97)
An Epidemiological Analysis of the Spread of Citrus Canker in Urban Miami, Florida, and Synergistic Interaction with the Asian Citrus Leaf Miner - (Proceedings) - (24-Mar-97)
Comparative Effects of Aphid Vector Species on Increase and Spread of Citrus Tristeza Virus - (Proceedings) - (24-Mar-97)
Relationships Between Disease Incidence at Two Levels in a Spatial Hierarchy - (Peer Reviewed Journal) - (19-Feb-97)
Time of Ascospore Release and Infection by Mycosphaerella Citri in Central and Southwest Florida - (Proceedings) - (11-Jan-96)
Identification of Citrus Blight in the Riverina, Nsw - (Peer Reviewed Journal) - (05-Jan-96)
Last Modified: 1/28/2014
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