Chaverri, Priscila. (2003). Studies on the systematics of Hypocrea-Trichoderma (Hypocreaceae, Hypocreales, Ascomycota): species with green ascospores. Ph.D. dissertation; Elwin Stewart, dissertation adviser.
Costanzo, Stefano. (2003). Characterization and mapping of QTLS conferring resistance to late blight in potato. Ph.D. dissertation; Barbara J. Christ, dissertation adviser. PDF also available at https://etda.libraries.psu.edu/paper/6085/1380
Fromm, Matthew S. (2003). Forest impacts of the hemlock woolly adelgid and its association with Armillaria species. M.S. thesis; Donald D. Davis, thesis adviser.
Ramón, María Paola. (2003). Effects of fertilizer, pH and biological control on Pythium root rot. M.S. thesis; Gary W. Moorman, thesis adviser.
Rauyaree, Payungsak. (2003). Molecular basis of pathogenicity by soilborne fungal plant pathogen, Verticillium dahliae. Ph.D. dissertation; Seogchan Kang, dissertation adviser. PDF also available at http://search.proquest.com/docview/288076530?pq-origsite=summon
Sica, Cory J. (2003). Pennsylvania populations of Alternaria solani, the causal agent of early blight of potato evaluated for fungicide resistance. M.S. thesis; Barbara J. Christ, thesis adviser.