1. H. Rouse Caffey Rice Research StationLouisiana State Univ. Agricultural Center1373 Caffey Rd.RayneLA70578
2. School of Plant, Environmental and Soil ScienceLouisiana State Univ.Baton RougeLA70808
3. Dep. of GeographyUniv. at BuffaloBuffaloNY14261
4. Dep. of Plant SciencesUniv. of California–DavisDavisCA95616
5. Dep. of Plant Pathology and Crop PhysiologyLouisiana State Univ.Baton RougeLA70808