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  1. Tri-State Fertilizer Recommendations- Additional Resources

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

    Ward, and Raymond Weil. 2007. “Nutrient Stratification in No-till Soils.” Leading Edge, The Journal of ... No-Till Agriculture. go.osu.edu/stratification Soil Testing North Central Regional Committee on Soil ... E-2567.  agcrops.osu.edu/publications/tri-state-fertility-guide-corn-soybean-wheat-and-alfalfa Soil ...

  2. 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 nutrient management plan. A quality soil ...

  3. 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 ...

  4. Dr. Lal Honored with Dual Titles from IICA

    https://ipa.osu.edu/news/dr-lal-honored-dual-titles-iica

    The Inter-American Institute for Cooperation on Agriculture (IICA) bestowed the dual titles of ... IICA Chair in Soil Science and IICA Goodwill Ambassador for Sustainable Development Issues on Dr. ...

  5. Executive Summary

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

    published in 1995 provide a solid framework for managing fertilizers and soil fertility. However, some ... changes have been made to the recommendations: Soil sampling remains a critical component of effective ... nutrient management. Soil sample in a consistent way every 3 to 4 years at no more than 25-acre samples. ...

  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 ... Default soil test P and K levels now based on Mehlich-3. These recommendations are consistent with current ...

  7. 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 ...

  8. Micronutrients

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

    Most soils in the tri-state region contain adequate quantities of micronutrients. This is particularly ... rarely been observed in this region of the United States. Some soils, however, may be deficient in B, Cu, ... Both soil testing and plant analysis are useful in diagnosing micronutrient deficiencies. Relative to ...

  9. Potassium Fertilizer Recommendations

    https://agcrops.osu.edu/node/3480

    corn silage, and alfalfa for potassium below. Potassium recommendations differ for sandy soil (CEC ... <5 meq/100g) and loam and clay soils (CEC >6 meq/ 100g). The tables use CECs of 5 meq/100g or less ... for sandy soils and 15 meq/100g for loam and clay soils. For Michigan, subtract 20 lb K 2 O/ acre from ...

  10. Calcium, Magnesium, and Sulfur

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

    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 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 ...

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