1. Dep. of Agronomy and Plant Genetics The Univ. of Minnesota Saint Paul MN 55108 USA
2. The Land Institute Salina KS 67401 USA
3. Northwest Agricultural Research Center Montana State Univ. Kalispell MN 59901 USA
4. Texas A&M AgriLife Research and Extension Center San Angelo TX 76901 USA
5. United States Dep.of Agriculture Agricultural Research Service U.S. Dairy Forage Research Center Madison WI 53706 USA