Who we are

Carstens leads Landus Cooperative’s work to advocate for farmer-members and customers, empower employees, and lean into the future of the ag industry. His passion for, and experience in, agriculture spans every step in the supply chain from agronomy retail to end-user grain customers, food manufacturers, grocery stores and consumers.

Miner brings to Landus Cooperative three decades of cooperative experience. He was previously chief financial officer/vice president of administration at Farmers Cooperative. He was also location manager at Mid-Iowa Cooperative and began his career at his family’s agronomy company, Miner Farm Supply.

DeJongh is responsible for the strategic direction of grain policies, inventory and quality control policies, as well as farmer-facing grain marketing programs, including our Cooperative Advantage Packages. His experience includes domestic and international grain marketing, operations, P&L responsibility and supply chain management. Previously he was senior vice president at Columbia Grain and held several leadership roles at AGP Grain Ltd. He has an agricultural business administration degree from the University of Minnesota.

Risdal is responsible for the cooperative’s marketing, communications and business development planning. Additionally, he oversees Landus Cooperative’s customer experience focus. His experience includes research and development, sales, marketing and management at Key Cooperative and Land O’ Lakes. Most recently, he was a senior product manager with WinField United. Risdal holds a bachelor’s degree in agriculture from Iowa State University.

Cullen is responsible for Landus Cooperative’s dairy, beef and swine nutrition manufacturing businesses. Under his leadership, SoyPlus, SoyChlor and PasturChlor branded dairy nutrition products, which are marketed domestically and internationally, saw significant growth. Cullen has more than 20 years of experience in the cooperative system in management, sales and manufacturing operations, including oversight for HACCP and ISO certifications. Cullen holds a bachelor’s degree in agricultural business from Northwest Missouri State University.

Barker oversees Landus Cooperative’s technology, integrating every aspect of the business and providing real-time data internally and to customers. In his nearly three-decade career, Barker has implemented business intelligence strategies, modernized companies’ online presences and improved customer experiences. Barker has served in IT leadership roles at Ingram Barge Company, The Manitowac Company and Ford Company. He graduated from Purdue University and holds PMP Certification from the Project Management Institute.

Unruh oversees Landus Cooperative’s agronomy business, including sales, marketing, product procurement and precision ag. Previously he enjoyed a long career in various segments of the agriculture industry, at companies that include Winfield United, John Deere Financial and Helena Chemical. Unruh holds a bachelor’s degree in business from Ashford University.