1. Dep. of Crop and Soil Sciences Washington State Univ. 291D Johnson Hall Pullman WA 99164‐6420
2. Washington State Univ. Extension 1000 N Forest St., Suite 201 Bellingham WA 98225
3. Dep. of Plant and Soil Science Univ. of Vermont 63 Carrigan Dr. Burlington VT 05406
4. Dep. of Horticulture and Landscape Architecture Purdue Univ. 625 Agriculture Mall Dr. West Lafayette IN 47907
5. Dep. of Communication Univ. of Colorado at Boulder 270 UCB Boulder CO 80309‐0270
6. Michigan State Univ. Extension 8527 E. Government Center Dr., Suite 107 Suttons Bay MI 49682