You are here: Home / Alumni and Friends / Professional Master Agronomist / Professional Master Agronomist Pages

Professional Master Agronomist Pages

Professional Master Agronomist Pages

Gregory, Mark S. 2016 PMA

Gregory, Mark S. 2016 PMA

Mark S. Gregory 2016 Professional Master AgronomistMark started his extension career as a County Extension Agent in McLennan County Texas with agriculture and 4-H responsibilities. He left that position to pursue a Master’s degree at Iowa State University. Mark joined OCES in 1985 as Area Extension Agronomist for the SE District, in Ada. He has also served as an Area Agronomy Specialist in Guymon, Cordell and Duncan. Mark moved to Duncan in 2001, where he remained until retirement in December 2015. Mark is known as a people person; enjoying relationships he has established over the years with producers, industry personnel and extension educators. He has served as president of the Oklahoma Association of County Agriculture Agents and has served as superintendent of the hay show at the Oklahoma State Fair for many years.

Peeper, Tom 2016 PMA

Peeper, Tom 2016 PMA

Dr. Thomas Peeper is a native of Apache Oklahoma. He received his MS from Oklahoma State University in 1969 and his Ph.D. from North Carolina State University in 1975. Tom began his tenure with OSU in 1976 as the Small Grain Weed Science Extension Specialist. After 34 years of Service Dr. Peeper retired in 2010. During his time with OSU Dr. Peeper advised scores of graduate students who all went on to make great impacts on the industry. Prior to his retirement Dr. Peeper spear headed the Okanola project which established winter canola as an economically viable rotation option for winter wheat in the southern Great Plains.

Rice, Chris 2016 MPA

Rice, Chris 2016 MPA

Chris Rice, 2016 Professional Master Agronomist, Dept of Plant and Soil Sciences

Chris started working for OSU full time in 1980 under Dr. Jim Stritzke as a Senior Agriculturalist. He served in that capacity for 10 years. In 1990, he became Senior Station Superintendent at the Agronomy Research Station. He held that position until 2001 when he was named as Extension Area Agronomist for the SE District, Oklahoma Cooperative Extension Service. Chris retired on July 10, 2015 with 35 years of service to OSU and DASNR.

Woods, Bob 2015 PMA

Woods, Bob 2015 PMA

Bob Woods, 2016 Professional Master Agronomist, Dept of Plant and Soil Sciences

Bob Woods was an active member of the Oklahoma Cooperative Extension Service (OCES) team for over 30 years, from 1980 when he started as the Seminole County Extension Director to 2010 when he retired as the Northeast Area Agronomist. Mr. Woods served as the N.E. Area Agronomist for the majority of his career, where he made a significant impact on the region’s agricultural systems.


Mr. Woods’ extension programs were extremely diverse involving livestock, forage, and grain production. His work included projects in weed management, forage systems, livestock feeding strategies, soil fertility, and precision agriculture. He authored many papers and publications with titles such as “Money with Hay Opportunities in Hay Marketing”, “Bermudagrass Pasture Forage Production as Affected by Interseeded Legumes and Phosphorus Fertilization”, “Gra$$bak - A Forage Improvement Program”, and “Introducing a New Nitrogen Management Strategy to Northeast Oklahoma Producers”. During his tenure with OCES Mr. Woods authored over 1,000 Timely Topic Newsletters Articles.


Bob was very active in working with County Extension Educators to establish and maintain research test plots in their counties. Bob was instrumental in getting some “Fescue Suppression” test plots going in Mayes County from 1993 to 1997. Bob also was a major player in getting green seeker test plots started in many counties in the N.E. District. For example, in Ottawa County there is a producer that so truly believed in the green seeker program that he put all his wheat acreage (1,500 acres) in it and has maintained the program for the past 14 years.

Also in Ottawa County research was conducted on fertility rates in corn. Dr. Brian Arnall was involved in those test plots while he was completing his Ph.D. Bob was also instrumental in getting strip-till and ridge-till test plots going in Ottawa County.


Because of Bob, agronomic research and demonstration trials were revitalized in the N.E. District, wheat and soybean variety test plots that had been absent from the district for several years were re-established and are still maintained today.


While Bob was the N.E. District Agronomist at least six producers in the N.E. District were given the “Master Agronomist” award and most of their accomplishments were due to the leadership and involvement that Bob supplied.


Since retiring in July 2010, Mr. Woods has done some consulting, both privately and for the Soybean Association. He enjoyed the consulting, but now is just working for himself managing pastures and running a small stocker cattle operation (which he has done part time since 1981). The stocker enterprise has increased since he retired. He used to carry around 70-90 head a year but last fall he received and wintered 224. Bob still calls the stocker cattle his “bass boat.”


Gribble, Roger Don 2014 PMA

Gribble, Roger Don 2014 PMA

Roger Gribble, 2014 Professional Master Agronomist, Dept of Plant and Soil SciencesRoger Gribble has been an active member of the OCES team since his hire in 1981.  Most notably is his success as the NW Area Agronomist, a position he has held for twenty years.  Mr. Gribble describes his program as “working with agriculture educators and producers through technical advances in crop production.  Cropping systems include wheat, soybeans, grain sorghum, cotton, corn, and canola.  Work in forage production systems that include alfalfa, improved grasses and native range.”


During Mr. Gribble’s tenure as NW Area Agronomist, he has averaged approximately 100 presentations a year with 150 or more annual interactions with producers and OCES professionals.  It is undeniable that Mr. Gribble has had an impact on crop production not only in his area but across the state.


Through his work, almost every county established at least one set of wheat plots for demonstration and research purposes.  He also was the leading force for the Lahoma Field Day held each year on the North Central Research Station.  Thousands have attended this event over the years.  Roger was also a proponent and a leader in the educational programming which led to the establishment of canola as an excellent income source and a rotational crop for wheat.  The Okanola project has had significant success across the state.


In his time as an Agronomist, Roger became extremely adept in all aspects of production from weed management, soil fertility, crop rotation, and variety and hybrid selection.  Roger maintained a very strong presence in his area via on farm research and demonstration trials.


Mr. Gribble’s nominator wrote ‘As a young Extension Specialist, Mr. Gribble was one of my greatest allies and supporters.  He created ample opportunity for me to interact with producers both in meetings and one-on-one settings.  Roger has been one of the greatest proponents in the adoption of the N-Rich Strip and GreenSeeker technology which is now utilized on nearly 500,000 acres of crop land across the state.’


Mr. Gribble is also considered the county educator’s biggest supporter.   He referred to his educators as the door step to Oklahoma State University and supported this group with as much vigor as any other Area Agronomist to date.

Sidwell, Raymond 2014 MPA

Sidwell, Raymond 2014 MPA

Ray served as the Sr. Station Manager for the 143 acre North Central Research Station located in the heart of wheat production country just west of Lahoma from June 1, 1980, until his passing in December of 2013. Thirty three years of Raymond’s meticulous management of the facility allowed major research efforts in the following areas including wheat breeding and variety development, soil-fertility, weed science, soybean varieties and cropping systems, grain sorghum variety trials, plant pathology and entomology.


As Station Manager, Raymond became an ambassador for the Agricultural Research and Extension efforts conducted at the North Central Research Station.  Known by wheat producers across the state as the “Annual Lahoma Wheat Tour”, Ray and the station hosted literally thousands of guests including Wheat Producers, Commodity group officials, Foreign Dignitaries, many National and State Legislators in addition to a full-compliment of Administrators from Higher Education and Research.


The North Central Research Station is a world class facility that is recognized by many in Research and Extension as the “Flagship” among the Oklahoma Research Stations because of its impact on Agriculture in the southern plains and the presentation and presence that it has for its visitors.  Under Ray’s watchful eye, the “Lahoma Station” has been a gem of information for both wheat producers and others involved in production agriculture, Research, and Extension, largely because of the effort Ray and his staff put into its maintenance as well as their ability to see where improvements could be made that would better serve all agricultural clientele.


Over the years, the Lahoma Research Station has grown to also host field days and tours related to Canola production, No-till crop production, crop water capture, conservation, and cover crop utilization, not to mention the countless visits by students, dignitaries and producers that have taken place on a day to day basis.


Raymond, his wife Brenda, and their children Bambi and Brady, are highly regarded members of the Agricultural and Ag Business Community in Oklahoma.  Locally, Raymond and his family are recognized by the farmer peers in their home community of Goltry as very progressive and proactive production agriculturists.  Ray implemented many practices that were backed by the research done at the North Central Research Station under his guidance into his own operation which in turn added credibility and adoptability of research done at the station by his farming neighbors in Alfalfa, Garfield, and Major Counties.

Westerman, Robert L. 2013 MPA

Westerman, Robert L. 2013 MPA

Robert (Bob) Westerman, 2014 Professional Master Agronomist, Dept of Plant and Soil SciencesDr. Robert L. Westerman

Assistant Vice President for Agricultural Programs Division of Agricultural Sciences and Natural Resources Oklahoma State University




Degrees Received

Ph.D., 1969, Soil Science, University of Illinois

M.S., 1963, Agronomy/Soils, Oklahoma State University

B.S., 1961, Agricultural Education, Oklahoma State University

Present and Past Positions

Oklahoma State University Emeritus Faculty 2013-present

Vice President for Agricultural Programs 2007-2013

Vice President for Agricultural Programs and Interim Sr. Financial Officer 2006-2007 Vice President for Agricultural Programs 2006

Interim Associate Director of OAES 2005 -2006 Assistant Director of OAES, 2001 - 2005

Head, Department of Plant and Soil Sciences, 1997-2001 Head, Department of Agronomy, 1991-1997

Regents Professor of Soil Fertility and Plant Nutrition, 1988-1991 Professor of Soil Fertility and Plant Nutrition, 1983-1988 Associate Professor of Soil Fertility and Plant Nutrition, 1976-1983

University of Arizona

Associate Professor and Associate Soil Scientist, 1974-1976 Assistant Professor and Assistant Soil Scientist, 1969-1974

Professional Activities and Accomplishments

¨      Assist with the day-to-day management of the Division of Agricultural Sciences and Natural Resources

¨      Demonstrated ability to effectively manage the Oklahoma Agricultural Experiment Station budget and day- to-day affairs, which has annual expenditures over $50 million

¨      Demonstrated ability to serve effectively as an administrative leader of a large complex department

¨      Scholarly achievement in research with a strong publication record

¨      Research in soil fertility and plant nutrition with emphasis on efficient fertilizer use, nitrogen fertilizer transformations, movement in soil, and uptake in plants utilizing 15N techniques while minimizing the potential of pollution of groundwater, lakes and streams

¨      Demonstrated ability to secure extramural funding

¨      Editor, SSSA Monograph "Soil Testing and Plant Analysis, 1990

¨      Associate Editor, Fertilizer Issues, 1983-1990

¨      Chairman Division S-4, 1983-1084

¨      Regional Chairman, ASA Membership Committee, 1982-1983

¨      Associate Editor (Soils), Agronomy Journal, 1976-1982

National Awards

¨      ASA, Agronomic Achievement Award - Soils, 1991

¨      Fellow, American Society of America, 1986

¨     Fellow, Soil Science Society of America, 1986

Banks, J.C. 2011 MPA

Banks, J.C. 2011 MPA

Banks, J.C. 2011 PMA

Dr. J. C. Banks
Professor & Extension Cotton Specialist
OSU Plant and Soil Sciences
22 years at OSU!



Raised on a cotton, small grains, and cattle farm in southwest Oklahoma.  Attended college at Cameron University at Lawton, Oklahoma and Oklahoma State University, receiving a Ph.D. degree in Agronomy in 1974.  Joined Oklahoma State University as an Area Extension Cotton Specialist in 1988.  Was promoted to Associate Professor and State Cotton Specialist in 1991 and in 1996 was promoted to Professor, Plant and Soil Sciences, State Cotton Specialist, and Director, OSU Southwest Research and Extension Center at Altus.  Activities included management of the Altus center and statewide responsibility for research and extension/educational programs in all aspects of cotton production.

Martin, Bjorn 2011 MPA

Martin, Bjorn 2011 MPA

Bjorn Martin, 2011 Professional Master Agronomist, Dept of Plant and Soil Sciences

Dr. Bjorn Martin
Professor of Plant Stress Physiology
OSU Plant and Soil Sciences
21 years at OSU!



Grew up in Umea, Sweden (less than 200 miles south of the Arctic Circle).  Earned B.S. and Ph.D. degrees from the University of Umea, and in 1978 conducted postdoctoral work at U.C. Berkeley, California.  Served as a Senior Research Associate at the University of Illinois, Urbana (1980) and as a Senior Research Scientist with NPI, University of Utah Research Park, Salt Lake City (1984).  Joined the faculty of OSU in the Agronomy Department in 1989.  Activities included research on plant drought tolerance and water-use efficiency.

Peeper, Tom 2011 PMA

Peeper, Tom 2011 PMA

Tom Peeper, 2011 Professional Master Agronomist, Dept of Plant and Soil SciencesDr. Tom Peeper
Professor of Weed Science
Warth Distinguished Professor in Agronomy
OSU Plant and Soil Sciences
34 years at OSU!



Native of Apache, Oklahoma and graduated from Apache High School.  Received a B.S. in Agronomy from OSU in 1967, and a M.S. in Agronomy (Weed Science) from OSU in 1969 under Dr. Paul Santelmann.  Served as a Commissioned Officer (attaining rank of Captain) in the U.S. Army, including a year in Viet Nam with the First Cavalry Division (Airmobile).  Received a Ph.D. in Weed Science, with a minor in Toxicology, from North Carolina State University. Activities included developing weed control tactics/technologies in wheat, notill wheat research, biological control of bindweed, and initiation of Okanola Project to introduce winter canola to Oklahoma wheat growers.

Caddel, John PMA

Caddel, John PMA

John Caddel, 2011 Professional Master Agronomist, Dept Plant and Soil SciencesJohn L. Caddel, Professor in the Department of Plant and Soil Sciences , Oklahoma Staie University, retired on February 28, 2009.  Dr. Caddel joined the OSU Agronomy Department in 1977 as an assistant professor with responsibilities in alfalfa breeding and forage management.  He had previously been on the faculty at the University of Minnesota.

Dr. Caddel grew up on the family's cotton, grain sorghum and bermudagrass farm near Sinton, Texas. After spending one year at Iowa State University, he returned to Texas and obtained a B.S. degree in Agronomy from Texas A & I University in 1966 and a Ph.D. degree in Plant Breeding & Genetics from Oklahoma State University in 1971. At OSU, Dr. Caddel led a breeding and management program designed to improve multiple-pest resistance in alfalfa .  He also served as the research group leader for a program designed to develop a farming systems approach to enhance forage quality and yields using clovers in eastern Oklahoma.

In 1991, Dr. Caddel was assigned to half-time alfalfa extension responsibilities .  He provided excellent leadership in the development of an educational program for alfalfa and contributed greatly to increased alfalfa profitability in Oklahoma. He was instrumental in the development of numerous educational events and programs including the "Hay Day" program, an event to educate producers in all aspects of production, harvesting, storing and marketing of alfalfa hay.  As Secretary Treasurer of the Oklahoma Alfalfa Hay and Seed Association, he developed and distributed timely, state-wide, alfalfa educational information through a newsletter (NEWS).  He also developed an alfalfa production calendar and several web pages devoted to alfalfa and clovers.  These web pages contain some of the best information and colqr photographs on alfalfa and clovers in the country and resulted in Dr. Caddel receiving the "Certificate of Excellence Award from the American Society of Agronomy and the Excellence in Alfalfa Extension Activities Award from the Certified Alfalfa Seed Council in 1996.  In 1998, he received the Outstanding Extension Specialist Achievement Award.

He, along with graduate students and collaborating scientists , contributed new knowledge about alfalfa through the publication of 151 scientific articles, 130 extension publications and research papers, 4 handbooks and 8 web pages.  He collected, evaluated, and enhanced alfalfa by releasing 5 cultivars and 11 germplasm lines.  Dr. Caddel served as major advisor to 21 M.S and 3 Ph.D. students many of them now occupy prominent positions in public or private institutions around the country.  Among them is Dr. David Porter, the current Plant and Soil Sciences department head.

He has contributed to numerous state, regional, national, and international scientific organizations including the American Society of Agronomy, International Grassland Congress, American Forage and Grasslands Council, North American Alfalfa Improvement Conference, the Forage and Grasslands Foundation, Inc, and the Southern Pasture and Forage Improvement Conference.  He held offices and served on numerous committees within these organizations, including being elected to the Board of Directors of the Forage and Grasslands Foundation.

Dr. Caddel.has had several long-term assignments in international programs.  From 1971-77 while he was at U. of Minnesota , he worked in the Crop Production Department at the lnstitut Agronomique Hassan II in Rabat, Morocco where he initiated and developed a barley breeding and genetics program to improve cereal production in Morocco.  In 1987-88, he served as resident advisor and coordinator of all in-country activities for USAID-Mid-America International Agricultural Consortium in Tunisia. He also served as Program Associate and member of the Management Operations Committee of MIAC.  Dr. Caddel has served in various capacities on international agriculture reviews, and scientific exchanges in Morocco, Tunisia, Syria, India, Kenya, Spain, France, Germany, Holland, and Belgium. He also served on the OSU Division of Agriculture, International Agriculture Advisory Committee.

In retirement, Dr. Caddel plans to continue to live in Stillwater, spend more time with his daughter and grandchildren , travel, and continuing some of his professional activities.

Verhalen, Laval 2009

Verhalen, Laval 2009

Verhalen, Laval 2009Dr. Laval M. Verhalen grew up on a farm near Knox City, Texas. He attended schools in Knox City and graduated as valedictorian from Knox City High School in 1959. After graduation he attended Texas Technological College (now Texas Tech University) in Lubbock, Texas and received a B.S. in Agronomy (with honors) in 1963.  He was voted the "Outstanding Agronomy Senior" by the Tech Agronomy faculty and one of three "Aggies of the Year" by the Tech Aggie Council.

Laval came to OSU in 1963 to do graduate work and soon became an integral part of the Department of Agronomy . He worked for four years as a Graduate Research Assistant in Cotton Breeding and Genetics and then became an Instructor before receiving his Ph.D. in Plant Breeding and Genetics in 1968. After finishing his Ph.D., Laval joined the faculty at OSU and rose through the ranks, becoming a Full Professor in 1977. His entire professional life was devoted to cotton.

Laval served as Associate Editor for Crop Science (twice); Chairman - 261 Annual Cotton Improvement Conference; President, Vice President, Secretary, and Treasurer of Sigma Xi (OSU Chapter) ; and Secretary and Chairperson of the Biological Science Group of the Graduate Faculty. In the department, Laval served on a number of committees, but may be best remembered for his many years of service as a member of the Faculty and Staff Awards and Recognition Committee. In this capacity he was responsible for nominating numerous individuals for awards and recognitions (many of whom won the award they were nominated for). He was always careful to give recognition and respect to all he worked with - whether they be field personnel at the experiment stations, secretaries and administrative personnel in the department, students, or colleagues.

Laval's service to the Stillwater community was an important part of who he was and what he will be remembered for. He served as a girls softball coach for Stillwater Parks and Recreation teams for  30 years.  He also served as a soccer coach for 11 years, a basketball coach for 9 years, and a baseball coach for 1 year. Many families in the Stillwater area have been touched by his kindness and compassion toward their children. In 2003, Laval was inducted into the Oklahoma ASA Softball Hall of Fame in the Coach/Manager category. Laval's coaching interests extended to academics as well. He served for 10 years as an assistant coach for Academic Bowl Teams, first at Perkins-Tryon High School and later at Cushing High School. Laval was well known and respected for his ability and his willingness to serve as an editor and reviewer . He spent many hours reviewing manuscripts and dissertations for colleagues and students. Who can forget seeing one of his edited manuscripts with its carefully annotated comments and corrections in red, blue, green, black, and sometimes even orange ink? It has been said that not even the English Department was as thorough in its reviews as Laval was.

Dr. Verhalen taught PLNT 4783 "Cotton Production", AGRON 6624 "Classical Evolution", PLNT 5110 "Plant Breeding Methods", as well as numerous other courses at the Junior, Senior , and Graduate levels. In 1994 he was rewarded with the Outstanding Faculty Achievement Award for Teaching in the Department of Agronomy . Laval served as major advisor to 6 M.S. and 18 Ph.D. graduate students and served on 61 other graduate students' committees.

Dr. Verhalen did extensive research in cotton breeding and genetics , variety testing, and cultural studies as well as cooperative research with plant pathologists, entomologists , weed control researchers, agricultural economists, a biochemist, plus many others. In 1988 Dr. Verhalen was the recipient of the Cotton Genetics Research Award awarded by the National Cotton Council in recognition of his many contributions to the field.

Laval Verhalen retired June 2, 2008 , from the Department of Plant and Soil Sciences after 41 years of service on the Faculty. Thus far he has published 45 journal articles, 129 assorted other publications, and 63 progress reports in field day publications. He is continuing to write in his retirement.

Stiegler, Jim 2008 PMA

Dr. James H. Stiegler grew up on a dairy farm in Hondo, Texas and started helping his father with custom farming when he was 12 years old. He also spent a lot of time with his grandparents who had come from Germany. Even at a young age he had decided he did not want a desk job but to work outside.

James Stiegler, 2008 Professional Master Agronomist, Dept of Plant and Soil SciencesDr. James H. Stiegler grew up on a dairy farm in Hondo, Texas and started helping his father with custom farming when he was 12 years old. He also spent a lot of time with his grandparents who had come from Germany. Even at a young age he had decided he did not want a desk job but to work outside. His mom said, "Jim was destined to be a dirt doctor, he was always outside making mud pies or digging in the dirt." Dr. Stiegler attended St.John's Elementary school and Hondo High School where he played football, graduating in 1960. After graduation he attended Texas A & I University where he received his B.S. degree in Agronomy in 1964. Never having left the state of Texas, Dr. Stiegler decided to continue his education at Oklahoma State University where he earned his M.S. degree in Agronomy and met his wife, Connie, on a blind date. Dr. Stiegler and Connie were married on June 17, 1967.

They spent their honeymoon moving to Blacksburg, Virginia where he attend Virginia Polytechnic Institute and received his Ph.D. degree in Soil Science. During summers, he worked as a field-mapping specialist from 1967 to 1970. Dr. Stiegler did all the cooking for his roommates on the condition that they would clean up the mess.

Upon completion of his Ph.D. in 1970 he had a job offer from Kansas State University to become an Assistant Professor and Cooperative Extension Land Utilization Specialist. During his time there he became involved in the National Land Judging competitions. During their time at Kansas State University the Stiegler family added a daughter Stephanie. In 1973 Dr. Stiegler accepted a position at Oklahoma State University where he was the Cooperative Extension Soil Specialist and soon after their son Chris was born. In 1985, Dr. Stiegler received an achievement award for guiding a coalition of researchers, Extension Specialists, commodity groups and producers to develop a highly effective minimum tillage conservation program. This award put Dr. Stiegler in national competition for the USDA Superior Service Award. In 1988, Dr. Stiegler added another title to his name when he became the Agronomy Extension Leader. Beginning the 1980's he was a major influence on wheat farmers in Oklahoma helping to introduce new conservation tillage technology on a field scale basis that has resulted in better farming techniques across the state.

Dr. Stiegler's expertise in cropping systems, residue management, and conservation tillage has made him a popular speaker at producer meetings, field days, workshops, and conferences throughout Oklahoma and the Southern Great Plains. He also has administered the educational components of a number of government programs including the 319 Water Quality Program, Conservation Reserve Program, and the Environmental Quality Incentive Program. Thousands of 4-H and FFA youth from across the nation, as well as other countries are familiar with Stiegler's leadership of the annual   National Land Judging Contest in Oklahoma City of which he has been the coordinator since 1973.

Many accomplishments and honors have marked his 34 years of dedicated service at OSU. Among the many state and national honors, Dr. Stiegler was named a Fellow in the Soil and Water Conservation Society in 1991. He has received several awards and commendations for his education programs and publications and videos, including a USDA commendation for his work on programs associated with the 1990 Farm Bill - an honor received while on sabbatical leave in Washington D.C. He was also named Leader of the Year in Service to Oklahoma Agriculture.

Dr. Stiegler has been actively involved in international agriculture and has served as chairman of the natural resources committee of the Mid-American International Agricultural Consortium - a group of five land grant universities whose job it is to establish teachings, research, and extension program linkages with other nations. After serving as Interim Department Head for the second time in February of 2001, Dr. Stiegler became the official Department Head in January of 2002 holding this position until his retirement in 2007 after 34 years of service to OSU and 36 years of service in extension work. During his term as Department Head, he traveled to Israel, China, Mexico, and Brazil to promote Oklahoma State University's College of Agriculture as well as to recruit students.

Nofziger, David 2007 PMA

Nofziger, David 2007 PMA

David Nofziger, 2007 Professional Master Agronomist, Dept of Plant and Soil SciencesDavid Lynn Nofziger, Regents Professor and holder of the Santelmann/Warth  Professorship retired on January 5, 2007. Nofziger joined the Agronomy Department in 1974 with teaching and research responsibilities in soil physics. He was born and raised on a 100 acre farm in northwest Ohio. He was the youngest of six children and had five older sisters. As a child he enjoyed math and learned many methods of solving problems in his head from his father. After graduating from Pettisville High School in a class of 34 students, he attended Goshen College where he met his wife Ruby and obtained a B.A. degree in physics in 1966. Nofziger attended graduate school at Purdue University where he received both his M.S. and Ph.D. in soil physics in 1970 and 1972 respectively.

After obtaining his PhD degree, Nofziger was employed at Ahmadu Bello University in Zaria, Nigera for two years. In December, 1974 he was hired as an assistant professor at Oklahoma State University. Nofziger has been a member of this department for 32 years and has demonstrated exemplary service in the areas of scholarly publications, involvement in and service to numerous professional organizations, training of undergraduate, graduate, and post-doctorial students, garnering external research funds and conducting research related to the movement of chemicals and water into soils. Nofziger has published 87 referred journal articles, computer software and related publications, 55 proceedings and abstracts and received over 1.7 million dollars in grants, during his career.

While at Purdue University, Nofziger learned computer programming and utilized it extensively in his graduate work and throughout his career. In 1978, he obtained funds from the Dean of Instruction to purchase the first microcomputer in the Agronomy department. He then programmed it to use in teaching soil physics and other applications. He also developed software and graphics routines and interfaced the computers to laboratory instruments . He enjoyed combining his love for math and physics with his interest in agriculture.

About the same year, he attended an NSF short course on utilizing computers to teach science. He got hooked on interactive programs and is well known around the country and the world for the interactive models he developed for modeling the movement of water and chemicals in soils and for decision support systems he developed cooperatively with other scientists. He taught courses in soil physics as well as computer programming and database management.

Nofziger has received many honors and awards including being elected as Fellow in ASA and SSSA in 1993 and 1994, respectively. He also served as Chair, S- 1, Soil Physics and Associate Editor for SSSA. He presented invited talks in China, Sweden, Brazil, New Zealand, and Australia. He is inquisitive and enjoys learning about new areas of research. Dave and Ruby were married in 1968 and have two daughters and one grandson.  They plan to move to Homer, Alaska in May.