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  1. Tri-State Fertilizer Recommendations- Additional Resources

    https://agcrops.osu.edu/node/3487

    Original 1995 Tri-State Fertilizer Recommendations Vitosh, M.L., J.W. Johnson, and D.B. Mengel. 1995.  Tri-State Fertilizer Recommendations for Corn, Soybean, Wheat, and Alfalfa. Extension Bulletin E-2567.  agcrops.osu.edu/publications/tri-state-fertility ...

  2. Nitrogen

    https://agcrops.osu.edu/node/3482

    The profitability of crop production is highly dependent on proper nitrogen (N) management, as N fertilizer represents a large fraction of the total cost of production. Unfortunately, N is the one of the most challenging nutrients to manage in field crops ...

  3. Soil Sampling, Handling, and Testing

    https://agcrops.osu.edu/node/3484

    The accuracy of a fertilizer recommendation depends on the quality of the soil sample collected and analyzed to produce a soil test value. Taking the time to collect a quality soil sample is the first and perhaps most important step in developing a sound ...

  4. Executive Summary

    https://agcrops.osu.edu/node/3486

    The Tri-State Field Crop Fertilizer Recommendations for Indiana, Michigan, and Ohio have been revised and updated. Extensive research station and on-farm trials have been conducted over the past decade to validate and refine the guidelines. In general, th ...

  5. Lina Sasaki

    https://hcs.osu.edu/our-people/lina-sasaki

    Lina Sasaki Horticultural Assistant Sasaki.43@osu.edu ...

  6. Quick Reference Guide to Tri-State Fertilizer Recommendation Changes

    https://agcrops.osu.edu/node/3488

    What has changed? Why the change? Soil Sampling Sample every 3 to 4 years in a consistent way as the foundation for an adaptive nutrient management program. No changes. Details Soil pH and Lime Recommendations Michigan and Indiana liming recommendations a ...

  7. Soil PH and Lime Recommendations

    https://agcrops.osu.edu/node/3483

    Soil pH is one of the most important properties in determining the cycling and availability of soil nutrients. Soil testing regularly and applying lime to maintain recommended pH levels should be the first step growers take to assure crops have sufficient ...

  8. Calcium, Magnesium, and Sulfur

    https://agcrops.osu.edu/node/3477

    Calcium (Ca), magnesium (Mg), and sulfur (S) are the three secondary nutrients required by plants, but less likely to be added as fertilizer as N, P or K. Most soils in Indiana, Michigan, and Ohio adequately supply these nutrients for plant growth. A stan ...

  9. Micronutrients

    https://agcrops.osu.edu/node/3476

    Micronutrients are essential plant nutrients that are found in trace amounts in tissue but play a vital role in plant growth and development. Of the 17 elements essential for plant growth, eight are micronutrients: boron (B), chlorine (CI), copper (Cu), i ...

  10. Phosphorus and Potassium

    https://agcrops.osu.edu/node/3478

    Build-up and Maintenance Framework The tri-state fertilizer recommendations for P and K are based on a build-up and maintenance approach. This framework strives to build soil test levels up to and beyond a critical level, then maintain these levels over t ...

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