1. Graduate Student, Department of Crop Soil and Environmental Sciences University of Arkansas Fayetteville AR 72704 USA
2. Distinguished Professor, Department of Crop Soil and Environmental Sciences University of Arkansas Fayetteville AR 72704 USA
3. Associate Professor, Department of Crop Soil and Environmental Sciences University of Arkansas Fayetteville AR 72704 USA
4. Assistant Professor/Extension Plant Pathologist, Division of Agriculture University of Arkansas Monticello Monticello AR 71656 USA
5. Director of the Agricultural Statistics Laboratory University of Arkansas Fayetteville AR 72701 USA