Crop Production Marketing Staff

Crop Production Marketing Management

  Tim Giesick, Vice President Crop Production
Cell: 620-272-6691

Tim is the Vice President of the Crop Production Division. Tim started with the Garden City Co-op in February 2006 as a Sales Manager at Lowe. He became Vice President of Crop Production in April 2007. Before coming to the Garden City Co-op, Tim worked and owned a farm for 21 years. He then worked for ADM for seven years, the last two were as Manager of the Shallow Water Elevator. Tim offices out of the Garden City Crop Production Office.

  Michael Kempke, Director of Precision Ag
Cell: 620-271-3446

Michael was raised in Garden City and has been involved in agriculture most of his life. He graduated from Garden City High School in 1996 where he was involved with FFA and spent his summers working for local farmers. He attended Garden City Community College and received an Associates’ Degree in Agriculture in 1998. Michael then attended Kansas State University and received a Bachelor’s Degree in Agriculture specializing in Agronomy in 2000. He worked for two years with MFA as a sales agronomist in Parsons, KS before moving back to western Kansas. He was employed by DG Farms for three years as farm operations manager in Garden City and later joined Tri-Rotor Crop Services LLC of Ulysses for two years as a warehouse manager and agronomist. 

Michael joined Garden City Co-op in 2007, assuming varoius roles in marketing, operations, management and accounting.  He recently completed his Master's in Ag Business Management at Kansas State University.  He became the Director of Precision Ag in 2015.

  Deanne UnruhCrop Production Purchasing Manager
Cell: 620-253-4131

Deanne grew up east of Garden City on a family farm.  She graduated from Fort Hays State University with a Bachelors in Business Administration and a concentration in accounting.  She has worked for the Garden City Coop since 2013.  

Deanne has had experience in multiple areas of the admin department, mostly in crop production accounting and inventory control.  In 2016, she transitioned to crop production procurement and logistics.


Agronomists / Sales Staff
  Ryan Kennedy, Lowe Sales Manager
Cell: 620-290-3512

Ryan was raised in Dodge City, KS. He graduated from Fort Hays State University with a Bachelors Degree in Crop Science in 2001. Before coming to the Garden City Co-op, he interned with Crop Quest from 1998 thru 2000. He then worked as a full-time Agronomist from 2001 thru 2006. Ryan came to the Garden City Co-op in October 2006 and is now a Sales Manager at Lowe.

  Kyle Korf, Lowe Sales Manager
Cell: 620-290-4821

Kyle grew up in the small town of Hanston, KS. He graduated from Fort Hays State University with a Bachelors Degree in Crop Science and a Minor in Chemistry. Upon completion of college in 2001, he accepted a job with Crop Quest out of Garden City, KS. He worked there from May 2001 till September 2008, at which time he accepted a job with the Garden City Co-op as a Sales Manager at Lowe.

  Trevor Witt, Plymell Sales Manager
Cell: 620-640-8151

Trevor grew up working on the family farm in Ingalls, KS. He attended Kansas State University, graduating in 2008 with a Degree in Agronomy. Throughout college, he interned with Crop Quest and accepted a full-time job with them upon graduating and worked there from 2008 to 2011. Trevor then took a position with Syngenta as the Western Kansas Area Agronomist working there for just a short time before coming to the Garden City Co-op as a Sales Manager in May 2013 at our Plymell location.

  Eric Konrade, Plymell Sales Manager
Cell: 620-640-4713

Eric was born and raised in southwest Kansas and grew up in Dodge City, KS. He graduated from Fort Hays State University with a degree in General Agriculture. Before coming to the Garden City Co-op, he worked for Crop Quest for 12 years as an agronomist and Division Manager. Eric came to the Garden City Co-op as a Sales Manager in October 2013 at our Plymell location.

  Joey Kuehler, Ulysses Sales Manager
Cell: 620-290-1092

Joey originates from the small farming community of Rhineland, TX. He graduated from West Texas State University in 1985 with a BS in Ag Business & Economics, and in February 1986, he started his career with Servi-Tech in Satanta, KS. While there, he spent 7 years as an agronomist, 17 years as a Division Manager, and 3 years as a Technical Support Agronomist. In September 2012, he accepted a position with Crop Production Services. He joined the Garden City Co-op as a Sales Manager in April 2014. He is based out of the Ulysess office and will cover the Sublette, Satanta, and Ulysses territory.

  Mark Vance, Dighton Area Sales Manager
Cell: 620-805-2816

Bio coming soon.

Seed Sales Staff


  Logan Dreiling, Seed Salesman
Cell: 620-290-1213

Logan was born and raised in Scott City, Kansas where he was active in 4-H and FFA. Logan first discovered his passion for agriculture while working for a local farmer throughout his high school years. He attended Butler County Community College and Fort Hays State University, majoring in Agriculture Business. After college, Logan worked for a Scott City farmer where his responsibilities included a variety of tasks from running farm machinery to making decisions involved in crop production, to caring for livestock. Logan started for the Co-op in January 2012.


Office Locations & Info


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Crop Production Offices


Garden City Crop Production Office

Located at: 112 E. Santa Fe, Garden City, KS 67846

Phone: 620-275-6161

Lowe Crop Production Office:  Located at: 6915 W. Lowe Road, Holcomb, KS 67851

Phone: 620-277-2230


Dighton Crop Production Office: Located at: 201 W. George, Dighton, KS 67839

Phone: 620-397-2437 Toll Phone: 800-972-9842 Fax: 620-277-0324




Plymell Crop Production Office: Located at: 195 E. Craft Rd, Garden City, KS 67846

Phone: 620-271-0773




The Garden City Co-op Crop Production Division is headquartered out of the Lowe Elevator office north of Holcomb, KS. We also have an office located in Dighton, KS. Both locations have knowledgeable sales and production staff to help you with all of your fertilizer, chemical, seed, and other crop production needs. There is also a full line of different custom application options available for fertilizer, chemical, and anhydrous ammonia to fill any of your application needs. Most of the storage capacity for fertilizer, chemical, and seed is at the Lowe location and from there is distributed to Dighton and other locations, including customer delivery. Multiple satellite ammonia plants are strategically placed throughout the Garden City Co-op territory providing customers with timely access to ammonia in their specific area.

 Input Financing

The Garden City Co-op sales team is associated with several different companies to assist in your financing needs. FarmPlan offers several crop input programs that allow growers to lock in an attractive interest rate and carry their input costs usually until after the crop is harvested. They also work in conjunction with the Garden City Co-op to occasionally offer special low rate or no rate finance plans that vary each year and with each crop.

CFA (The Cooperative Finance Association, Inc.) is also associated with the Garden City Co-op in offering flexible finance options for crop inputs. Depending on the time of year and the programs available, they are able to design a finance package for almost every need on your farm.

Rabo Bank financing is also available for those people that prefer to work with them. They offer competitive rates and offer programs that allow growers to tailor a finance plan that works for them.

Contact any of the sales team or staff in the Crop Production Division of the Garden City Co-op or contact the Credit Manager, Phyllis Archer, in the Main Office to discuss the many financing options available today.

Important Notices !!!

First Aid for Anhydrous Ammonia Exposure

Click on our Blog Icon for the latest news updates in the Crop Production Division.
Latest Updates -- GC PhosPlus ..... The Ultimate Response!

Got Kochia ..... We Got Answers!

Make the Most of Your Fertilizer Investment with AVAIL & NutriSphere-N

6-8 tillers vs 1-3 tillers... Which Do You Choose?







...................Click Here to Find Out How...................


Fortix Fungicide
(Click Here For More Information)

Assessing Hail Damage

Things to Consider:

  • Be patient. Damage usually looks worst right after the event. Give the crop a week to evaluate.
  • Entering rapid growth stage. Plants putting new leaves on every 2-3 days.
  • Hail may have caused stalk bruising which could contribute to standability concerns later in the season.
  • Defoliation will encourage weed pressure once residual herbicides start to break down.
  • Both defoliation and stand loss have occurred. Please refer to the provided Hail Guide below for evaluation tips.

Possible management applications:
  • Fungicide applications to improve plant health and help prevent diseases due to stresses put upon plant.
  • Nitrogen applications that contain strong concentrations of sulfer. (ie. ATS 12-0-0-26, and 28-0-0-5).

Evaluating Hail Damage to Corn
(A guide to help you evaluate your damage.)

Contact your local Garden City Co-op agronomists to discuss agronomic solutions due to recent hail events.

Ryan Kennedy - 620-290-3512
Kyle Korf - 620-290-4821
Trevor Witt - 620-640-8151
Eric Konrade - 620-640-4713
Joey Kuehler - 620-290-1092
Logan Dreiling - 620-290-1213



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