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​​I. E. Melhus Graduate Student Symposium

An APS committee in conjunction with financial support from the APS Foundation, sponsors the ​I. E. Melhus Graduate Student Symposium held each year at the APS Annual Meeting. The symposium features graduate student research around a central theme which changes annually. Invited speakers receive a financial award to be applied toward the cost of attending the APS Annual Meeting. This award is funded by the APS Foundation and the I. E. Melhus Graduate Student Symposium Fund.

2023 host committee is Mycotoxicology​

The 2023 I. E. Melhus Graduate Student Symposium will focus on the theme of "Systems-based approaches, tools, and tactics to combat mycotoxins for a sustainable and safe food supply."  Mycotoxin contamination of grains, fruits, vegetables, nuts, and foodstuffs (e.g., processed meats, cheeses) is a chronic problem that is expanding with global climate change, but specific mycotoxin threats vary by region and at different stages of agricultural production (pre-harvest, post-harvest, processing). Thus, a systems-based approach that emphasizes region-specific threats and solutions must be considered when developing and optimizing mycotoxin mitigation strategies.  We encourage students to submit their research that pertains to the prevention and management of mycotoxin contamination of a wide variety of plant and plant-based products with an emphasis on locally or regionally developed resources and tactics.  Research focus may include disease/mycotoxin/pathogen detection and monitoring, breeding for and evaluating resistance, pre- and post-harvest prevention and mitigation strategies, or microbe-microbe interactions that influence severity of mycotoxin contamination. 

This is an excellent opportunity for current and recent graduate students to present their research during the acclaimed Melhus session. Awardees will receive a​ $500 honorarium ​to apply toward the cost of attending the meeting.


Applicants must be an APS member in good standing and currently enrolled as a graduate student or have completed their graduate program within 12 months of the current APS annual meeting date. All APS student members with thesis research projects related to the designated ​theme are encouraged to submit applications.​​

Up to five recipients will be selected and are expected to give a 30-minute presentation at the APS Annual Meeting​.

Research Description

Applications must contain a written description of the research project, stating the goals, methodology, results, and significance of the applicant's thesis research. Applications should not exceed five single-spaced pages (excluding tables and figures).

Letters of Nomination

Two letters of nomination are required, one of which must be submitted by the applicant's major professor. Letters of nomination must include evaluations of the applicant's research and ability to present the research in a clear and effective manner. Letters of nomination may be submitted separately by the letter writer using the Letter of Recommendation Form.

All of the above required materials must be included in one PDF document and submitted through the Award Application Form on or before March 30, 2023.

NOTE letters of recommendation must be submitted separately by the letter writer using the Letter of Recommendation Form. Letters are due March 30, 2023.​

Submit Application

Speakers will be chosen by an ad hoc selection committee comprised of APS committee members and an external reviewer chosen by the APS Foundation. Participants will be selected competitively, based on research significance and potential impact. 

Previous award recipients​​


Donate to the I. E. Melhus Fund!​​

Dr. Irving E. Melhus was a renowned teacher, innovative researcher, and outstanding departmental administrator at Iowa State College (ISC). Indeed, he was a true pioneer among plant pathologists. When, in 1912, he earned his Ph.D. degree under the guidance of L. R. Jones at the University of Wisconsin, he was the first person from Wisconsin to be awarded a doctorate in plant pathology. During a four-year stint with the USDA’s Office of Vegetable Crop Diseases, between 1912 and 1916, Dr. Melhus showed that the pathogen responsible for late blight of potato, Phytophthora infestans, overwinters in the tubers. In 1918, as an assistant professor at ISC, Dr. Melhus was among the early leaders of a nationwide effort to control stem rust through the eradication of the common barberry. Later, he would produce classic work on soilborne pathogens of Iowa crops that led directly to the use of several new or improved disease control methods.

In 1937, he and G. C. Kent wrote The Elements of Plant Pathology. From 1929 to 1946, Dr. Melhus served as chair of the school’s Botany Department, during which time he was instrumental in leading the department to national prominence. In 1946, Dr. Melhus founded the ISC-Guatemala Tropical Research Center for the study of corn improvement. This was the first overseas experiment station operated by a U.S. university, and Dr. Melhus led the program during its formative years between 1946 and 1953. A hybrid developed at the station continues to be the most widely cultivated corn in Guatemala.

Dr. Melhus was a recognized leader among his colleagues. He served as president of APS in 1926 and was elected a fellow of APS in 1965. Additionally, he was a member of the Iowa Academy of Sciences, the Botanical Society of America, and a fellow of the American Association for the Advancement of Science.

Melhus married Elizabeth Williamson on December 26, 1907. They had two daughters, Sarah (Hoyman) and Janet (Wallin). He died on November 10, 1969, in Ames, IA.