Cover photo for Thomas B. Threewitt Sr.'s Obituary
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1944 Thomas 2023

Thomas B. Threewitt Sr.

April 5, 1944 — May 15, 2023

Thomas (Tom) Buntin Threewitt, Sr., 79, of Garnett, Kansas, passed away peacefully with family by his side on Monday, May 15, 2023.

He was born in West Frankfort, Illinois on April 5, 1944, to William Edward and Loa (Buntin) Threewitt where he grew up on a crop and livestock farm in Aiken, Illinois and developed a love for agriculture.

In 1961, Tom married his high school sweetheart, Nancy and his career took them to Larned, KS where they raised their four children, Tommy, Susan, John and Becca, on their farm. He took extreme pride in his five grandsons, Trey, Seth, Gabe, Zeke and Izzy, spoiling them and rarely missing a sporting event.

Tom's 'grandson responsibilities' on the farm were many. Tractor rides, keeping the pool clean (especially for Fourth of July festivities), watching SpongeBob and learning how to walk around legos just to name a few. As a matter of fact, in order to visit his grandkids more often, he would set up work field plots close to where the grandsons lived. He would hide the grandson's Christmas present purchases from Nancy to ensure everyone was surprised, but that usually meant duplicate presents under the tree. After the move to Garnett and the grandsons got older, Stumpy the squirrel, who lived in Tom & Nancy's front yard, became one of his new responsibilities. Stumpy ran all over their yard every day, so Tom kept his eye on his new tail-less friend.

He received his Bachelor's of Science in Plant Science (1966) and Master's of Science in Weed Control (1968) from Southern Illinois University and his Ph.D. in Weed Science from University of Illinois in 1972.

Tom began his career as a field research representative in Kansas for the newly merged company of Ciba-Geigy, staying through several mergers and name changes, retiring from Syngenta after 32 years. He then established his own consulting and contract research company, PACA Ag, LLC. Where does the name PACA come from? His 2nd oldest grandson, Seth, struggled to say "Papa" and it always came out as "Paca" and the other grandsons adopted the same name for him.

Tom was involved with the development of the Kansas CCA program, serving on the board for 6 years with one year as the President. He was a member of many other industry organizations including Kansas Agricultural Retailers Association, North Central Weed Science Society, Western Society of Weed Science, Weed Science Society of America and Council for Agricultural Science and Technology. Tom's expertise and work ethics earned him an invaluable reputation with his peers in both industry and academia.

Tom is survived by his wife Nancy; his four children Thomas B. Threewitt Jr., K. Susan (Justin) Macy, John Threewitt, and Becca Brown; five grandsons Thomas "Trey" B. Threewitt III, Seth W. Threewitt, Gabriel Brown, Ezekiel Brown, and Israel Brown; his sister Patsy (Carroll) Bolen; sisters-in-law Paula (Steven) Arthur, and Clara (Greg) McClean; and many nieces and nephews.

In lieu of flowers and plants, the family requests memorial contributions to the Anderson County FFA chapter through a GoFundMe Account (Thomas B. Threewitt, Sr. Obituary - AC KS FFA) or can be mailed to Feuerborn Family Funeral Service, 219 S. Oak St. Box 408, Garnett, KS 66032.

Condolences may be sent to the family at
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