1. USDA‐ARS Soil and Water Management Unit 1991 Upper Buford Circle St. Paul MN 55108 USA
2. USDA‐ARS North Central Agricultural Res. Lab 2923 Medary Ave. Brookings SD 57006 USA
3. Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS) CSIC Avenida Reina Mercedes 10 Sevilla 41012 Spain
4. Minnesota Dep. of Agriculture 625 Robert Street North Saint Paul Saint Paul MN 55155 USA
5. Health Assessment and Environmental Safety Syngenta, 410 Swing Road Greensboro NC 27409 USA