Midwestern BioAg

Midwestern BioAg supplies fertilizers, soil amendments, livestock nutrition products, residential lawn and garden inputs, water-efficiency products, and wildlife fertility products. Its TerraNu fertilizers are intended to support soil productivity, while Bio-Cal is a proprietary blend of calcium sources with soluble and time-released forms. Bio-Gel products support crop water efficiency. The company’s biological farming approach combines fertility products with strategies intended to improve soil health, nutrient use efficiency, crop productivity, forage quality, and livestock nutrition. Crop-specific offerings serve contract growers, vegetable operations, community-supported agriculture operations, row crops, small grains, dairy, produce, forage, and wildlife programs.

With more than 40 years of experience, the business combines research-backed products with agronomic services and an educational focus on sustainable farming practices. Founded by Gary Zimmer, it promotes soil health systems designed to reduce reliance on synthetic inputs while supporting farm productivity. Service offerings include soil testing with secondary and trace mineral analyses, dry fertilizer application using spreader carts and floater trucks, forage analysis, and plant tissue analysis. Nutrition specialists support farm ration balancing, while testing services help producers assess nutrient content and address crop nutrition issues before harvest. The company also works with dealers and agents and offers programs for dairy, field rebate, produce, and wildlife applications.