Meet Our Team

Tad WesleyM.S., CPAg-CCA / Agronomist
Tad has over 20 years of experience, including agronomy consulting; agricultral data management, management of GIS and GPS computer systems, software developement, setup of variable rate fertilizer equipment for clients; pipeline right-of-way compliance management, agricultural inspection and monitoring, yield yestimates and compaction analysis; reclamation of strip-mined land and farm-land; and contract research.

He graduated in May 1994 with a Bachelor of Science degree in Agricultural Science from Western IL Univ., Macomb, IL and in May 1996 with a Master of Science degree in Soil Fertility from Kansas State University, Manhattan, KS.

Chuck McGrewCPAg-CCA / Agronomist
Chuck has acquired over 30 years of experience in agronomy sales and service; serving both seed and fertilizer companies. He has worked with the University of Illinois Orr Research Center Field Trails. Chuck also worked several years as a District Sales Representative for Pioneer Hi-Bred International where he served on the Advisory Board. Completing the Certified Crop Program in 1996, he worked more then 20 years as a Certified Crop Advisor. During his career in agronomy Chuck Started his own business: McGrew and Company, offering no-till equipment rental and precision agriculture technology service and sales… all while serving 14 years on the local public school board, and serving on the John Wood College Agriculture Advisory Council. Currently Chuck provides service and consulting as a Farm System Agronomy Consultant.
Drue Calvert
Besides farming with his dad, Drue has spent the last 15 years working in many different aspects of agricultural sales from seed, chemical and fertilizer to equipment. He has spent most of his time in the seed industry as a District Sales Manager dealing directly with farmers in their fields where he was able to hone his agronomy skills. Drue had the opportunity to further his career with Martin Sullivan as the precision farming sales and serviceman. Along with selling all other equipment, the precision experience allowed him to apply his agronomy knowledge back to machinery to help maximize a farm’s production. Drue graduated from the University of Illinois at Urbana-Champaign in 2002 with a Bachelor of Science Degree in Agricultural and Environmental Communications and Education.
Marion ShierM.S. Agronomy / CCA
Marion has 40 years of experience, in Agricultural consulting; including agronomy, soil fertility, integrated pest management, soil fertility data interpretation, GIS & GPS computer fertility management and recommendations. He worked for University of Illinois Extension for 33 years as a Crop Systems Educator, 4 years in St. Clair County and his last 29 years in Livingston County where he worked extensively with SCN identification and management in addition to managing the new variant of the western corn root-worm beetle, in addition to other diverse agronomic issues.

Marion graduated in December 1977 with a Bachelor of Science degree with majors in Agronomy, Animal Science, and Agricultural Economics from Missouri Western State University and a Master of Science Degree in Agronomy from University of Illinois. on the local public school board, and serving on the John Wood College Agriculture Advisory Council.

Mark Bernards
Assistant Professor in the School of Agriculture at Western Illinois University (WIU). He earned his Ph. D. at Michigan State University, and M.S. and B.S. degrees at Brigham Young University. He previously worked as an Extension Weed Specialist for the University of Nebraska-Lincoln. At WIU he teaches several classes, including: Principles of Crop Science, Integrated Pest Management, Weed Science, Diseases of Economic Plants, and Field Crops of the Midwest. He advises the Agronomy Club and coaches the WIU Weed Science Team. Mark directs the agronomy operations at WIU’s Agricultural Field Laboratory where it conducts research on weed management in corn and soybeans, and evaluates herbicides and adjuvants for crop safety and weed control efficacy issues.