Refereed

Roberts, P.D., Urs, R.R, McAvoy, G., Kucharek, T. A. Semer C. R., and Benny, G. L, Pernezny, K. 2003. Outbreak of Choanephora blight caused by Choanephora cucurbitarum on green bean and pepper in Florida. Plant Dis. 87:1149.

Pernezny, K., Jones, J.B., and Roberts, P.D. 2003. An outbreak of a leaf spot disease of cabbage in southern Florida caused by Xanthomonas campestris pv. armoraciae. Plant Dis. 87:873.

Bhatia, A., Roberts, P.D., and Timmer, L.W. 2003.  Evaluation of the Alter-Rater model for timing of fungicide applications for control of Alternaria brown spot of citrus.  Plant Dis: accepted.

Jones, J.B., Minsavage, G.V., Roberts, P.D., Johnson, R.R., Kousik, C.S., Subramanian, S., and Stall, R.E. 2002. A non-hypersensitive resistance in pepper to the bacterial spot pathogen is associated with two recessive genes.  Phytopathology 92:273-277.

Roberts, P.D., Urs., R.R., Wiersma, H.I., and Mullahey, J.J. 2002.  Effect of  bacterium-herbicide combinations on tropical soda apple.  Biological control 24:238-244.

Carrington, M. E*., Roberts, P. D., Urs, R. R., Mullahey, J. J., McGovern, R. M. and Seijo, T. 2001. Premature fruit drop in saw palmetto caused by Colletotrichum gloesporioides. Plant Disease 85: 122-125.

Adkins, S., Roberts, P.D., Gooch, M.D., and Breman, L.  2001. Identification of Peopper mild mottle virus in commercial bell pepper in Florida.  Plant Disease 85:679.

Roberts, P. D., Saunders, B. Urs, R. R., Dickstein, E. and Jones, J. B. 2001. Xanthomonas Leaf Spot and Stem Canker on Blueberry in Nurseries in Florida. Plant Disease 86:188.

Jones, J. B., Bouzar, H., Stall, R. E., Almira, E. C., Roberts, P. D., Bowen, B. W., Studberry, J., Stickler, P. M. and Chun, J. 2000. Systematic analysis of Xanthomonads (Xanthomonas sp.) associated with pepper and tomato lesions. Internation Journal of Systematic Bacteriology 50: 1211-1219.

Timmer, L. W., Roberts, P. D., Bushong, P. M., Stover, E. W., Peever, T. I. And Ibanez, A. M. 2000. Epidemiology and control of citrus greasy spot in different citrus- growing areas of Florida. Plant Disease 84: 1294-1298.

Roberts, P. D., Urs, R. R., McGovern, R. J. 1999. First report of aerial blight caused by Pythium myriotylum on tomato in Florida. Plant Disease 83: 301.

Roberts, P. D. and Trujillo, E. 1998. First report of Phytophthora causing leaf blight, fruit rot and root rot of papaya in American Samoa. Plant Disease 82: 712

Roberts, P. D., Hodge, N. C., Bouzar, H., Jones, J. B., Stall, R. E., Berger, R. D., and Chase A. R. 1998. Relatedness of strains of Xanthomonas fragariae by restriction fragment length polymorphism, DNA-DNA reassociation, and fatty acid analysis. Applied and Environmental Microbiology 64: 3961-3965.

Roberts, P. D., Berger, R. D, Jones, J. B., Chandler, C. K, and Stall, R. E. 1997. Disease progress, yield loss, and control of Xanthomonas fragariae on strawberry plants. Plant Disease 81: 917-921.

Roberts, P D., Jones, J. B. Chandler, C. K., Stall, R. E. and Berger, R. D. 1996. Survival of Xanthomonas fragariae on strawberry in summer nurseries in Florida detected by specific primers and nested polymerase chain reaction. Plant Disease 80: 1283-1288.

Chen, J., Roberts, P. D. and Gabriel, D. W. 1994. Effects of a virulence locus from Xanthomonas campestris 582T on pathovar status and ability to elicit blight symptoms on crucifers. Phytopathology 84: 1458-1456.

Kingsley, M. T., Gabriel, D. W., Marlow, G. C., and Roberts, P. D. 1993. The opsX locus of Xanthomonas campestris affects host range and biosynthesis of lipo polysaccharide and extracellular polysaccaride. Journal of Bacteriology 175: 5839-5850.

Barton-Willis, P. A., Roberts, P. D., Guo, A. and Leach, J. E. 1989. Growth dynamics of Xanthomonas campestris pv. oryzae in leaves of rice differential cultivars. Phytopathology 79: 573-578

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