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  1. Calculating Cation Exchange Capacity, Base Saturation, and Calcium Saturation

    https://ohioline.osu.edu/factsheet/anr-81

    example of typical soil test levels in Ohio (in ppm). We can calculate the collective charge each cation ... by the soil test levels. For calcium, a soil test level of 2000 ppm, divided by 200 equals 10.0 ... (ppm) to meq/100 g soil for base and acid cations to determine CEC. Base Cation Soil test level (ppm ...

  2. Gypsum for Agricultural Use in Ohio—Sources and Quality of Available Products

    https://ohioline.osu.edu/factsheet/anr-20

    to elevated levels. Unwashed FGD by-products can have levels of B sufficiently high to result in ... Professor This fact sheet provides information on gypsum as a soil amendment, the sources and mineral ... metal content of gypsum samples.  The Role of Gypsum as a Soil Amendment Gypsum is hydrated calcium ...

  3. Estimated and Soil Test Methods to Determine Supplemental N need after Flooding

    https://agcrops.osu.edu/newsletter/corn-newsletter/2022-19/estimated-and-soil-test-methods-determine-supplemental-n-need

    than 10 pounds of N for every 2 ppm reduction in soil sample N below the expected levels listed in ... understanding of loss mechanisms and other estimates of loss or soil tests may help decide on 2022 management in ... between 55 to 65 degrees Fahrenheit, approximately 2 to 3% of soil nitrate is lost per day under saturated ...

  4. October is here, harvest considerations for corn grain

    https://agcrops.osu.edu/newsletter/corn-newsletter/2022-35/october-here-harvest-considerations-corn-grain

    >90% was dented, and >50% was mature. According to this report, corn condition was rated 64% good to ... year, yield forecasts (see Table 1) show a high probability of near or above long-term average yields in ... Ohio (between 207 and 250 bu/Ac for the analyzed locations). Certainly, this would apply if adequate ...

  5. Plant Population

    https://agcrops.osu.edu/node/4337

    for mid-June plantings should be in the range of 130,000 to150,000 plants per acre. Final populations ... and depends on such things as soil moisture conditions, seed-soil contact, disease pressure, fungicide ... seed treatments, etc. Final harvest stands are typically 60 to 80 percent of the seeding rate when high ...

  6. Weather Update: A Winter Preview Before Warmer Weather Returns

    https://agcrops.osu.edu/newsletter/corn-newsletter/2022-36/weather-update-winter-preview-warmer-weather-returns

    week will be dominated by an upper-level low pressure system that will move through the Great Lakes, ... growing season across the state. Highs through  Wednesday are only expected to top out in the mid to upper ... 40s at best. Conditions will start to impove on Thursday, with sunshine returning and highs in the low ...

  7. Enroll in FDSCTE 7727 Interdisciplinary Colloquium on Food Safety, Current Topics in Food Safety Course

    https://foodsafety.osu.edu/news/enroll-fdscte-7727-interdisciplinary-colloquium-food-safety-current-topics-food-safety-course

    Reflection Across 22 Years of Experience in the Largest Food Manufacturing Company” to “Risk Ranking of ...

  8. Fertility Management of Meadows

    https://ohioline.osu.edu/factsheet/anr-5

    nutrition, forage test to check for adequate levels. When the soil pH is below 5.0, aluminum availability ... critical soil test level of 15-25 parts per million (ppm) phosphorus for Bray P1 test results or 28-40 ppm ... leaching. The critical soil test levels for potassium are 125-200 ppm. Plants have the ability to take up ...

  9. Fall Herbicide Applications in Dry Conditions

    https://agcrops.osu.edu/newsletter/corn-newsletter/2022-39/fall-herbicide-applications-dry-conditions

    most effective when daytime temperatures are in the 50s or higher, and nighttime temps above 40. ...

  10. Seeding Perennial Forages in Late Summer

    https://agcrops.osu.edu/newsletter/corn-newsletter/2022-24/seeding-perennial-forages-late-summer

    phosphorus level for forage legumes is 30 to 50 ppm Mehlich-3 and for grasses 20 to 30 ppm Mehlich-3. The ... optimal soil potassium level is 120 to 170 ppm for most of our soils.   Check herbicide history of field. ... contact. Be aware that too much tillage depletes soil moisture and increases the risk of soil crusting. ...

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