Responsibilities: Extension: Development and support of vegetable IPM
programs in Florida.
Research: Etiology and epidemiology of bacterial diseases of vegetables.
Major
accomplishments:
We have established a number of successful IPM programs on
Florida vegetables beginning with 365 acres of tomatoes in 1976-77 that now includes about
50,000 acres of tomatoes, peppers, snap beans, strawberries, squash and other vegetables
throughout the state. Florida is now considered one of the U.S. leaders in vegetable IPM.
We have also identified bacterial pathogens of cocoyam, celery, lettuce, and cilantro. We
have helped identify races of Xanthomonas campestris pv. vesicatoria causing
bacterial spot of tomato and pepper in southern Florida. Losses in commercial pepper
production are much less in recent years in part due to our involvement in extension
programs to educate growers about resistant cultivars.
Professional
activities:
Chairman of APS Tropical
Plant Pathology Committee, 1991-92; member 1988-93.
Member of APS Plant Disease Names Committee,
1990-93.
International
Programs:
International Research and
Exchange Scholar, Prague, Czech Republic,1993. Phytobacteriologist at the Research
Institute for Crop Production.
Grants and
Contracts:
Total of $370,240 from
diverse sources, including USDA Extension, Florida Tomato Exchange, Florida Bell Pepper
Exchange, and Agrichemical companies.
Graduate Students:
Member of 3 Ph.D.
committees and 2 M.S. committees. Chairmen of one M.S. committee.
Career
Publications:
37 refereed publications,
one Ag. Exp. Station Bull., two scouting manuals, 120 extension publications.
Selected
publications in last five years:
Refereed:
Pernezny, K., Collins, J.,
Stall, R.E., Shuler, K., and Datnoff, L.E. 1999. A serious outbreak of race 6 of Xanthomonas
campestris pv. vesicatoria on pepper in southern Florida. Plant Dis. 83:79.
Jones, J.B., Bouzar, H., Somodi, G.C., Stall, R.E., Pernezny, K., El-Morsy, G., and Scott, J.W. 1998. Evidence for the preemtive nature of tomato race 3 of Xanthomonas campestris pv. vesicatoria in Florida. Phytolpathology 88:33-88.
Pernezny, K., and Collins,
J. 1997. Epiphytic populations of Xanthomonas campestris pv. vesicatoria on
pepper: Relationships to host-plant resistance and exposure to copper sprays. Plant Dis.
81:791-794.
Pernezny, K., Kudela, V.,
Kokoskova, B., and Hladka, I. 1995. Bacterial diseases of tomato in the Czech and Slovak
Republics and lack of streptomycin resistance among copper-tolerant strains. Crop Protect.
14:267-270.
Pernezny, K., Datnoff, L.
E., Mueller, T., and Collins, J. 1996. Losses in fresh-market tomato production in Florida
due to target spot and bacterial spot and the benefits of protectant fungicides. Plant
Dis: 80:559-563.
Pernezny, K., Datnoff, L.,
and Sommerfeld, M. L. 1994. Brown stem of celery caused by Pseudomonas cichorii.
Plant Dis. 78:150-153.
Pohronezny, K., Schuster,
D. J., Tyson, R., Gilreath, R., Mitchell, R., Brown, R., Waddill, V., McSorley, R., Price,
J., Summerhill, W., Dankers, W., and Sprenkel, R. 1989. The impact of integrated pest
management on selected vegetable crops in Florida. Fla. Ag. Exp. Stn. Bull. No. 875. 67
pp.
Non-refereed:
Pernezny, K., and Kucharek, T.
1999. Scouting diseases of tomatoes and peppers. IFAS Coop. Ext. Serv. Circ. No. 1225. 31 lam. color plates (flash card set).
Pernezny, K., Schuster, D.,
Stansly, P., Simone, G., Waddill, V., Funderburk, J., Johnson, F., Lentini, R., and
Castner, J. 1996. Florida Tomato Scouting Guide. 2nd ed. Univ. Fla. Coop. Ext.
Serv. Pub. No. SP-22. 45 pp.
Stall, R. E., Jones, J. B.,
and Pohronezny, K. 1993. Characterization and detection of strains of the pathogen of
bacterial spot of tomato by monoclonal antibodies and DNA amplification. Pages 26-29 in:
Rep. of Tomato Res. Ann. Rep. to Fla. Tomato Comm.
Pernezny, K., and Litz, R.
E. 1993. Some common diseases of papaya in Florida. Plant Path. Ext. Rep. No. PP-35.
(electronic).
Pernezny, K., and Kucharek,
T. 1993. Rust diseases of several legumes and corn in Florida. Plant Path. Ext. Rep. No.
PP-37.