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  1. Preharvest Herbicide Treatments

    https://agcrops.osu.edu/newsletter/corn-newsletter/2020-28/preharvest-herbicide-treatments

    do not use preharvest-treated soybean for seed unless a germination test is performed on the seed ...

  2. Making Corn Silage in Dry Conditions

    https://agcrops.osu.edu/newsletter/corn-newsletter/2020-28/making-corn-silage-dry-conditions

    (as in fatal) to ruminants.  Silage from drought-stressed fields should be tested before it is fed.  ...

  3. Corn Silage Harvest Timing

    https://agcrops.osu.edu/newsletter/corn-newsletter/2020-28/corn-silage-harvest-timing

    In a Wisconsin study, 82% of the hybrids tested exhibited a poor relationship between kernel ...

  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. 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 ...

  6. 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 ...

  7. Executive Summary

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

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

  8. Derecho Devastates the Midwest While Ohio's Dry-Weather Pattern Continues

    https://agcrops.osu.edu/newsletter/corn-newsletter/2020-27/derecho-devastates-midwest-while-ohios-dry-weather-pattern

    exceptionally damaging to agricultural interests, particularly in Iowa. Numerous reports of winds stronger than ...

  9. 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   | ...

  10. 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 ...

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