1. University of Arkansas; Department of Crop, Soil, and Environmental Sciences; 1366 W Altheimer Drive Fayetteville 72704
2. University of Arkansas; Department of Biological and Agricultural Engineering; Northeast Research and Extension Center; P.O. Box 48 Keiser AR 72351
3. University of Missouri; Delta Center; P. O. Box 160, 147 State Highway T Portageville 63873
4. Cullum Seeds, L.L.C.; Fisher AR 72479
5. University of Arkansas Cooperative Extension Service