To Measure Is To Know

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Mike Thurow
President, CEO & Founder

Vision is my sixth sense. With a broad knowledge of the agricultural & horticulture markets worldwide, Spectrum has been blessed with success in developing new products for our markets. The challenge is getting growers to change and measure things they never measured before. We know that producers and researchers need more data in order to make better, objective decisions. The scarcity of water worldwide and the need to protect the environment will drive our future strategy.  Spectrum is fortunate to have passionate employees who are focused on delivering exceptional customer satisfaction.

B.S. Ag Engineering-Mechanization; Western Illinois University, M.B.A.; Keller Graduate School of Management

Matt McNulty
VP Finance/Operations/HR/IT

MattMatt is a trusted financial executive and business partner with over 20 years of experience in multiple manufacturing industries. He is skilled in partnering with business owners and executives to define strategic objectives. Matt works with business leaders to identify the primary value drivers of the business, providing innovative financial solutions and trusted guidance in operations required for success.

Matt considers the achievement of required results and continuous improvement to be crucial for the success of any business. He strongly believes that honesty, objectivity, integrity and personal accountability are the foundation of any professional relationship.

Providence College Bachelor of Arts Economics
London School of Economics Master of Science Finance
Boston University MBA

Board of Directors-Treasurer-Rotary One Chicago (2015-2017)

Denton Schwiesow
Vice President Sales & Marketing

Denton2Denton joins Spectrum after spending 15 years with Raven Industries, where he served several roles of increasing leadership including, Technical Support Rep, Precision Ag Specialist, Territory Sales Rep, Inside Sales Manager, Precision Ag Specialist Manager, and N. American Sales Manager.  He grew up north of Madison, SD where he has helped on the family farm his entire life.  He thoroughly enjoys partnering with and leading teams to grow the business while helping farmers feed the world!   



MBA, Carlson School of Management at U of Minnesota



Bridget Bozarth
Fruit/Nut/Vegetable Consultant - East


Educational consulting with small to large growers across the US & Canada to help farmers get the tools they need to measure & optimize their production.

Ivy Tech State College; 15 years in Sales/Account Management; 2 years in Business Administration

Loyd Bowman
National Account Manager - Turf

Supporting key relationships, distributors and customers throughout the United States and Canada with a focus on a consultative approach to connecting turf and landscape professionals with technology resources that will help them be more successful. I’m determined to leverage more than 15 years of field, management and sales experience in the green industry to prove myself as a valuable resource and partner you can trust.

Sports & Commercial Turfgrass Management, Michigan State University

Rick Welder
National Account Manager - Agriculture


Rick is joining the Spectrum team as the National Accounts Manager for Agriculture. Rick will foster and grow relationships with current national accounts and also work to bring new customers to Spectrum. Rick Welder has spent more than 12 years now in the field of precision ag. Rick certainly has the experience, skillset and personal focus to make a difference. He joins our team from Meister Media, where he was Commercial Sales Manager for CropLife and PrecisionAg Professional media brands. His experience included responsibility for the InfoAg Conference in St. Louis every year.

Mid America CropLife Association -- Board of Directors
Mid America Crop Life Association --Industry Communications Chair
Ohio Farm Bureau
Historic Engine Society

Declan Nicholson
Domestic Sales Coordinator


Declan graduated from the University of Illinois at Champaign – Urbana in 2016 with a Bachelor of Science in Marketing and Information Systems Technology.  Since then, he has been working on a contract basis for Diageo as a Project Associate focused on distributor quality assurance and various other projects. 
Declan’s customer service skills and data analysis/IT experience will make him a great addition to the team!  He will be stationed across the aisle from Terri; so please say “Hi”!  Declan will be the primary coordinator for National Accounts–Ag, Agriculture, General, FNV and R&E.

B.S. Marketing and ISIT
University of Illinois, Champagne

Terri Oldenburg
Sales Consultant, Research & Education


Terri joins the Spectrum team with extensive professional experience in sales, customer service and factory service divisions of both the electronics and insurance industries, working for big names like Philips, Zenith and LG.

Her unique combination of experience in operations and inventory controls will benefit our customer base due to her deep understanding of industry standards and best manufacturing practices, as will her passion for great customer service.

College of DuPage
30 years experience in Factory Service/Manufacturing/Management/Business



David Lau
Director – Asia and Business Development







Country Territory: Asia and Indian subcontinent

Grow and support international markets across various market segments; collaborate with distribution partners; facilitate educational and product application seminars; conduct training sessions to support distributors and customers; and partner with global accounts, agrochemical, crop protection, and seed companies, and government agencies to support their research and production initiatives through the application of measurement technologies.

B.A. Economics and German, Stanford University; M.B.A. Marketing and Finance, Duke University, Fuqua School of Business

Martin Roeder
International Sales Manager







Country Territory: South America, Africa, Middle East, Northern Asia, and Australia

Work with distribution networks to understand customer needs and provide training and product expertise to help better meet those needs and improve production.


B.S. Agriculture, La Molina University, Peru; M.B.A., University of Piura, Peru

Ralph George
Director Of Sales Europe, Middle East, and Africa







My passion is bringing new technologies to farming communities in the EMEA region. As the global population dynamic increases, agriculture strives for new technologies to ensure we can feed the world based on a forecast of 9 Billion people in 2050. Growers are faced with perpetual resource constraints such as water scarcity, plant protection solutions and the lack of additional land to increase production. Having 30 years’ experience in irrigation and integrated crop agronomics, it is apparent growers require more measurement tools and methods to ‘Measure to Know’ plant and soil requirements to optimize crop production.

Agriculture Diploma, Cedara Agricultural College, South Africa
AVCASA certification for crop protection advisor, South Africa

Emiliano Maciel
International Sales Coordinator


Milo provides daily support to the International Sales Team. As liaison for the customer with respect to warehouse and logistical needs.  He ensures correct order entry, and monitors, supports and assists with customs issues en route.

He uses strong verbal and written skills, handling multiple high priority projects successfully.

Fluent in Portuguese.

Beth Randall
Manager of Customer Expectations







Managing the Technical Support Staff, Warehouse, Return & Repair Processing, and Vendor Returns.

Our goal is to be an organization whose very purpose is exceptional service to its customers.
Please let me know how I can provide that.

B.S. Computer Technology, Purdue University

Doug Kieffer
Product Training Specialist







I have been with Spectrum since 2000 and have worked with the sales, marketing, and product development teams. I am currently with the Customer Satisfaction team where I assist with customer technical questions and perform service on products sent in for repair. Additionally, I am responsible for internal training for new employees and for new product releases.

B.S., Aeronautical/Astronautical Engineering, University of Illinois
M.S., Mechanical/Aerospace Engineering, NC State University
M.S., Natural Resources and Environmental Sciences, University of Illinois

Maricela Gamboa
National Accounts Sales Engineer







I have worked at Spectrum Technologies since 2009, currently assist customers with technical questions, troubleshooting, along with testing new products and cloud/mobile apps for the product development team.

Major in Mechanical Engineering Technology, Minor in Business Management from Southern Illinois University

Octavio Valle
Senior Technical Support Analyst







Provide outstanding technical support to our customers on all our products and software via phone, email, and Skype.

Associates Degree in Electronics Engineering Technology, ITT Technical Institute