1. Novartis Seeds, Inc. P.O. Box 729 Bay AR 72411 USA
2. Louisiana State Univ. Red River Res. Stn. P.O. Box 8550 Bossier City LA 71113 USA
3. Univ. of Arkansas Coop. Ext. Serv. 2201 Brookwood Dr. Little Rock AR 72203 USA
4. Dep. of Agronomy, 1150 Lilly Hall Purdue Univ. West Lafayette IN 47907 USA