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One of the agronomic benchmarks both no-tillers and strip-tillers have paid close attention to over the years is the Tri-State Crop Fertilizer Recommendations for field crops.
First published in 1995, these recommendations for Indiana, Michigan and Ohio have provided a framework for managing fertilizer and soil fertility based on research station and on-farm trials conducted over time.
Even as reduced-tillage and no-till practices, cover crops, spoon-feeding of nutrients and precision farming dawned and hybrids and varieties evolved and improved their efficiency, the Tri-State guidelines didn’t change.
After several years of work, a group of researchers from Ohio State, Michigan State and Purdue universities…