United States Department of Agriculture
European Biological Control Laboratory
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Tim L. Widmer


Research Plant Pathologist



Research projects at EBCL:


Foreign exploration, discovery, identification, and testing of new pathogens for Centaurea solstitialis, Arundo donax, Cardaria draba, Tamarix spp., Chondrilla jaceae, Convolvulus arvensis, and Galium spp. I am also currently examining the affect of toxins produced by Alternaria spp. and inhibition of seed germination by soilborne bacteria on Centaruea solstitialis.


Areas of scientific interest:


Besides biological control of weeds through the use of plant pathogens, I am interested in studying soilborne plant pathology and ecology, tropical plant pathology, and host-parasite interactions.