Annual Meeting Program Book - American Phytopathological Society

canopies in Hungary. S. E. EVERHART (1), H.
Scherm (1), A. Askew (2), L. Seymour (2), I. J.
Holb (3). (1) Department of Plant Pathology,
University of Georgia, Athens, GA, U.S.A.; (2)
Department of Statistics, University of Georgia,
Athens, GA, U.S.A.; (3) Centre of Agricultural
Sciences, University of Debrecen, Debrecen,
Hungary
2:15 p.m. O-37. Comparative epidemiology of Phytophthora
ramorum and other Phytophthora species. C.
R. ELLIOTT (1), V. McDonald (1), K. A.
Henslee (2), N. J. Grunwald (2). (1) Department
of Botany and Plant Pathology, Oregon
State University, Corvallis, OR, U.S.A.; (2)
Horticultural Crops Research Laboratory, USDA
ARS, Corvallis, OR, U.S.A.
2:30 p.m. BREAK
2:45 p.m. O-38. Does the Horsfall-Barratt scale for disease
severity estimation affect our ability to test for
treatment differences? C. H. BOCK (1), T. R.
Gottwald (2), P. E. Parker (3), F. J. Ferrandino
(4), S. J. Welham (5), F. Van den Bosch (5), S.
Parnell (5). (1) University of Florida/USDA-
ARS-USHRL, Fort Pierce, FL, U.S.A.; (2)
USDA-ARS-USHRL, Fort Pierce, FL, U.S.A.;
(3) USDA-APHIS-PPQ, Moore Air Base,
Edinburg, TX, U.S.A.; (4) Department of Plant
Pathology and Ecology, Connecticut, Agricultural
Experiment Station, New Haven, CT, U.S.A.;
(5) Rothamsted Research, Harpenden, Herts.,
England, United Kingdom
3:00 p.m. O-39. Logistic regression modeling of dollar spot
epidemics using weather variables as inputs. D.
L. SMITH (1), A. F. Payne (1), N. R. Walker (1).
(1) Oklahoma State University, Stillwater, OK,
U.S.A.
3:15 p.m. O-40. Dispersal and movement mechanisms of
Phytophthora capsici sporangia. L. GRANKE
(1), S. T. Windstam (2), H. C. Hoch (3), C. D.
Smart (3), M. K. Hausbeck (2). (1) Michigan
State University, East Lansing, MI, U.S.A.;
(2) Department of Plant Pathology, Michigan
State University, East Lansing, MI, U.S.A.;
(3) Department of Plant Pathology and Plant-
Microbe Biology, NYSAES, Geneva, NY, U.S.A.
3:30 p.m. O-41. Effect of plant age and leaf maturity on
the susceptibility to soybean rust caused by
Phakospora pachyrhizi.. P. SRIVASTAVA (1), J.
Marois (1), L. Leandro (2), D. Wright (3), D. R.
Walker (4). (1) Department of Plant Pathology,
NFREC, University of Florida, Quincy, FL,
U.S.A.; (2) Department of Plant Pathology,
Iowa State University, Ames, IA, U.S.A.; (3)
Department of Agronomy, NFREC, University
of Florida, Quincy, FL, U.S.A.; (4) USDA, 232
National Soybean Research Center, Urbana, IL,
U.S.A.
3:45 p.m. O-42. Effect of cultivar on the relationship
between Fusarium head blight severity and
deoxynivalenol concentration in winter wheat. J.
HERNANDEZ NOPSA (1), S. N. Wegulo (1).
(1) University of Nebraska, Lincoln, NE, U.S.A.
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