American Society of Agronomy, 677 S. Segoe Rd., Madison, WI 53711-1086, (608) 273-8080, Fax (608) 273-2021, headquarters@agronomx.org, www.agronomy.org.

Colorado Weed Management Association, PO Box 1910, Granby, CO 80446-1910, (970) 887-1228, Fax (970) 887-1229, cwma@rkymtnhi.com, www.cwma.org.

Council for Agricultural Science and Technology (CAST), 4420 W. Lincoln Way, Ames, IA 50014-3447, (515) 292-2125, Fax (515) 292-4512, cast@cast-science.org, www.cast-science.org. Teresa A. Graber, executive vice president.

Crop Science Society of America, 677 S. Segoe Road, Madison, WI 53711-1086, (608) 273-8086, Fax (608) 273-2021, headquarters@agronomx.org, www.crops.org.

Ecological Farming Association, 406 Main St., Suite 313, Watsonville, CA 95076, (831) 763-2111, Fax (831) 763-2112.

Northeastern Weed Science Society, Virginia Tech, Hampton Roads Res. Ctr., 1444 Diamond Springs Road, Virginia Beach, VA 23455, (757)363-3912, Fax (757) 363-3950. Jeffrey F. Derr.

Soil and Water Conservation Society, 7515 NE Ankeny Road, Ankeny, IA 50021-9764, (515) 289-2331, Fax (515) 289-1227, nancyh@swcs.org, www.swcs.org. Nancy Herselius, member services coordinator.

Soil Science Society of America, 677 S. Segoe Road, Madison, WI 53711-1086, (608) 273-8095, Fax (608) 273-2021, headuarters@agronomx.org., www.soils.org.

Weed Science Society of America, PO Box 7050, Lawrence, KS 66044, (800) 627-0629, Fax (785) 843-1274, wssa@allenpress.com, www.wssa.net.

Western Plant Growth Regulator Society, 1059 Court St., Suite 112, Woodland, CA 95695, Phone/Fax (530) 666-4837, lancebeem@valent.com. Lance Beem, business manager.