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  1. 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 ...

  2. 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 ... sample should represent no more than 25 acres and be from a composite of no less than 10 soil cores. ... greater confidence. There are many resources on soil testing including: Ohio State University Soil ...

  3. Phosphorus and Potassium

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

    soil test levels and fertilizer requirements no less than every four years. Soils above the maintenance ... 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. ...

  4. Ten Counties on WBC Scout List as Statewide Numbers Begin to Decrease

    https://agcrops.osu.edu/newsletter/corn-newsletter/2020-25/ten-counties-wbc-scout-list-statewide-numbers-begin-decrease

    monitored 87 traps, resulting in 418 WBC adults (a statewide average of 4.8 moths per trap) (Figure 1). ... Monitoring for WBC moths will continue in many counties until the end of August.   Figure 1. Average Western ...

  5. Executive Summary

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

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

  6. Potassium Fertilizer Recommendations

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

    <5 meq/100g) and loam and clay soils (CEC >6 meq/ 100g). The tables use CECs of 5 meq/100g or less ...   Soil Sampling, Handling, and Testing   |   Soil pH and Lime Recommendations   |   Nitrogen   | ...

  7. Western Bean Cutworm Numbers Continue to Increase

    https://agcrops.osu.edu/newsletter/corn-newsletter/2020-24/western-bean-cutworm-numbers-continue-increase

    average moths per trap) (Figure 1). Counties that are averaging more than 7 moths per week should begin ...

  8. 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 ... Testing and Plant Analysis (NCERA-13). 2015. Recommended Chemical Soil Test Procedures for the North ... and Dottie Call. 2006. “Managing Seasonal Fluctuations of Soil Tests.” AGR-189. University of Kentucky ...

  9. 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 ...

  10. 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 ...

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