Retired Faculty 1970's 


Albert Probst

1936 – 1970

Soybean Research

Dr. Probst made major contributions in the production, breeding, genetics, cultural studies, and quality investigations of soybeans. He was an active participant in many interstate university-industrial soybean conferences, and served as the soybean representative to the North Central Plant Introduction Committee, where he was largely responsible for encouraging the introduction of new germ plasm for use in breeding programs across the Midwest. He is an Honorary Life Member in the American Soybean Association. 


Helmut Kohnke

1943 – 1970

Soil Conservation Science

Dr. Kohnke was elected a Fellow of the American Society of Agronomy and the American Association for the Advancement of Science. He has been a guest lecturer in Germany, Argentina, Colombia and Brazil. He wrote Soil Science Simplified II, which popularized soil physics concepts.


Herbert W. Reuszer

1947 – 1970

Soil Microbiology

Dr. Reuszer was an active participant in regional and national committees and was one of the most active members in the North Central Regional Research projects on the nature of soil organic matter. He was the building deputy of Lilly Hall of Life Sciences from 1955 – 1970.

Herbert Paul Ulrich

1926 – 1971

Soil Survey Research

Herbert Ulrich taught soil classification and survey classes at Purdue University. He worked closely with soil conservationists in the Midwest and prepared manuscripts for county soil mapping. He served as director of the Soils and Fertility Institute from 1962 – 1963.

John Booth Peterson

1948 – 1971

Soil Science and Remote Sensing

Dr. Peterson received the prestigious Stevenson Research Award from the American Society of Agronomy in 1948 for his research in clays and soil structure. During his time at Purdue, a three-fold increase in staff and student occurred, and Dr. Peterson attempted to promote unity among the staff and students. He also developed programs with the Rockefeller and Ford Foundations to provide graduate education for promising young scientists from Mexico and many countries in South America, Central America, Africa and Asia.

Maurice E. Heath

1953 – 1975


Professor Heath served as director of the Southern Indiana Forage Farm in Dubois County. His research included forage-animal-land use efficiencies on fragipan hill land soils. Professor Heath also was senior editor of Forages: The Science of Grassland Agriculture, a textbook used in the United States as well as Spanish and Portuguese-speaking countries for 40 years.

Wayne F. Keim

1953 - 1956

Crop Genetics and Breeding

Dr. Keim developed culture techniques for rearing immature embryos. He also designed and supervised construction of the American Society of Agronomy revolving exhibit.


Dale Swartzendruber

1956 – 1977

Soil Science

Dr. Swartzendruber’s research centered on the development of basic flow equations for water transport in porous media containing clay. He served as a delegate of Purdue University to Universities Council on Water Resources,  was Associate Editor and on the Editorial Board of the Soil Science Society of America Proceedings, and was a member of Phi Kappa Phi, Sigma Xi, and Gamma Sigma Delta. Dr. Swartzendruber also wrote numerous publications based on his research findings. 

Alvin L. Zachary

1954 – 1978

Soil Classification & Survey

Professor Zachary taught Soil Classification Survey and Soil Morphology and Judging at Purdue for 15 years. He also coached the Purdue Soil Judging Team from 1964-1977, winning all but 2 of 15 contests and winning the national competition three times. Professor Zachary also helped to increase the number of field soil scientists in Indiana while in the soil survey program.

Lester H. Smith

1954 – 1979

Extension Agronomist

Professor Smith served as an Extension agronomist at Purdue dealing with alfalfa and other forage crops, focusing on the efficient production and utilization of forage crops for feeding dairy cows, beef cattle, sheep and horses in Indiana. He was involved in developing the Greener Pasture Programs in 17 Indiana counties. Professor Smith used mass media heavily, writing or obtaining a weekly weather and crop report and distributing it to the mass media and 3,000 farmers and agribusiness personnel every week. 

Raymond J. Bula

1956 – 1979


Dr. Bula worked at Purdue University for 19 years and for USDA/ARS for 31 years. He was a member of the Board of Directors for the Crop Science Society of America and received the USDA Ten-year Service Award for Agricultural Research Service. Dr. Bula also served as the Official United States Representative to the Organization for Economic Cooperation and Development (OECD) Annual Meeting of National Designated Authorities Responsible for the Implementation of the OECD Seed Schemes in 1965.​

Department of Agronomy, 915 West State Street, West Lafayette, IN 47907-2053 USA, (765) 494-4773

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