1. USDA‐ARS Soybean and Alfalfa Research Lab. Beltsville MD 20705
2. Dep. of Biology Univ. of Utah Salt Lake City UT 84112
3. USDA‐ARS‐CICG Dep. of Agronomy Iowa State Univ. Ames IA 50011
4. Biogenetic Services Inc. 801 32 Ave. Brookings SD 57006
5. Yuzuncu Yil Univ. College of Agriculture 65080 Van Turkey
6. USDA‐ARS Soil Drainage Unit 590 Woody Hayes Drive Columbus OH 43210
7. Dep. of Horticulture and Crop Science The Ohio State Univ.
8. Ohio Agric. Res. and Dev. Center Wooster OH 44691
9. Dep. of Agronomy Gyeong Sang National Univ. Chinju South Korea 660‐701
10. Dep. of Agronomy Univ. Nebraska Lincoln NE 68583‐0915