[1] Univ Illinois, Dept Crop Sci, Urbana, IL 61801 USA
[2] Univ Florida, N Florida Res & Educ Ctr, Dept Plant Pathol, Quincy, FL USA
[3] Univ Florida, Dept Agron, N Florida Res & Educ Ctr, Quincy, FL USA
[4] Univ Florida, Dept Plant Pathol, Gainesville, FL 32611 USA
[5] Univ Florida, So Plant Diagnost Network, Gainesville, FL 32611 USA
[6] USDA ARS, Urbana, IL USA