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  1. Tri-State Fertilizer Recommendations- Additional Resources

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

    No-Till Agriculture. go.osu.edu/stratification Soil Testing North Central Regional Committee on Soil ... Ward, and Raymond Weil. 2007. “Nutrient Stratification in No-till Soils.” Leading Edge, The Journal of ... Testing and Plant Analysis (NCERA-13). 2015. Recommended Chemical Soil Test Procedures for the North ...

  2. Executive Summary

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

    higher soil test potassium (STK) ammonium acetate, as discussed in the fact sheet Converting Between ... approximately 35% higher soil test phosphorous (STP) values than Bray P1. Mehlich-3 K returns approximately 14% ... Mehlich-3, Bray P, and Ammonium Acetate Soil Test Values. See  go.osu.edu/mehlich. Critical levels for all ...

  3. Soil Sampling, Handling, and Testing

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

    and analyzed to produce a soil test value. Taking the time to collect a quality soil sample is the ... greater confidence. There are many resources on soil testing including: Ohio State University Soil ... approaches require a larger investment in soil testing but can provide more precise information to manage ...

  4. Phosphorus and Potassium

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

    on a build-up and maintenance approach. This framework strives to build soil test levels up to and ... three distinct recommendations based on soil test values: 1) build-up, 2) maintenance, and 3) drawdown. ... fertilizer to build soil test levels) if soils test below the critical level or are “deficient.” The ...

  5. Tri-State Fertilizer Recommendations for Corn, Soybeans, Wheat, and Alfalfa

    https://agcrops.osu.edu/node/3485

    effort by many committed agricultural professionals with the ultimate goal of providing objective and ... National Institute for Food and Agriculture, the Corn Marketing Program of Michigan, the Michigan Wheat ... College of Agriculture and Natural Resources, and the School of Environment and Natural Resources at The ...

  6. Micronutrients

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

    Both soil testing and plant analysis are useful in diagnosing micronutrient deficiencies. Relative to ... soil pH, micronutrient soil tests are not as reliable and so plant analysis can play an important role ... to complement a soil test. Combining plant analysis with soil tests provides more accurate assessment ...

  7. Calcium, Magnesium, and Sulfur

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

    adequately supply these nutrients for plant growth. A standard soil test measures the relative availability ... of Ca and Mg in soils. There is no accurate soil test for S at this time. A plant analysis is the ... K recommendations for alfalfa and corn silage do not follow the maintenance concept above the critical K soil test ...

  8. NRCS Seeks Comments on 590 Nutrient Management Standard Update

    https://agcrops.osu.edu/newsletter/corn-newsletter/2020-25/nrcs-seeks-comments-590-nutrient-management-standard-update

    need to both protect Ohio’s water resources and agricultural industry, and the need to develop ... newly revised Tri State Fertility Guide and are converted to the now standard Melich III soil test ... extraction method.-Developed a more defined path to draw down high soil test phosphorus fields.-Updated ...

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

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

    Default soil test P and K levels now based on Mehlich-3. These recommendations are consistent with current ... soil test extracts. Details P critical level 20 ppm for corn and soybean, 30 ppm for wheat and alfalfa ... Wheat, and Alfalfa Executive Summary   |   Soil Sampling, Handling, and Testing   |   Soil pH and Lime ...

  10. Soil PH and Lime Recommendations

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

    soil nutrients. Soil testing regularly and applying lime to maintain recommended pH levels should be ... Corn, Soybeans, Wheat, and Alfalfa Executive Summary   |   Soil Sampling, Handling, and Testing   | ...

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