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  1. Fertilization

    https://agcrops.osu.edu/node/4389

    before planting when the soil-test level is below 50 ppm. Recommendations are determined by yield goal ... removal).  Yield  Potential  (bu/ac) Soil  CEC Soil-Test K  (ppm)     25 50 75 100 125 150 175 60       lb  ... ―Both Grain and Straw Removed.  Yield  Potential  (bu/ac) Soil  CEC Soil-Test K (ppm)     25 50 75 100 125 150 ...

  2. 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 ...

  3. Phosphorus (P) Nutrient Use in Ohio

    https://ohioline.osu.edu/factsheet/anr-0143

    percent of Ohio counties had decreasing trends in mean soil test P (STP) levels between 1993 and 2015. ... a large degree for given soil test P (STP) values and crop production levels. In instances with the same ... reduced median soil test P (STP) levels across most Ohio counties from 1995 to 2015 supports this finding ...

  4. Converting between Mehlich-3, Bray P, and Ammonium Acetate Soil Test Values

    https://ohioline.osu.edu/factsheet/anr-75

    Bray P. When only soil test values in the agronomic range were considered (less than 50 ppm Bray P), ... relationships between Mehlich-3, Bray P, and Ammonium Acetate soil test extractants in the Tri-State Region. ... 3–1170 ppm, and Mehlich-3 K values ranged from 25–899 ppm. We examined relationships with all soil test ...

  5. Fertilization Recommendations

    https://agcrops.osu.edu/node/4348

    Magnesium (Mg)  Soybeans require a minimum exchangeable soil test level of 200 and 50 ppm (400 and 100 ... Recommendations for Soybeans.    Yield   Potential   (bu/ac) Soil   test   (Bray   P) 30 40 50 60 70 ppm   (lb/ac) ... Cation Exchange Capacities (CECs) and Soil-Test Levels.  ​​​​​​     Yield Potential bu/  ac 30 40 50 60 ...

  6. Winter Application of Manure in Ohio

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-032023-41/winter-application-manure-ohio

    things to keep in mind. Frozen ground would be soil that you cannot inject the manure into or cannot ... application of manure on frozen and snow-covered soil is not acceptable. An emergency exists as a temporary ... frozen soils are available for manure application. All applications of liquid manure to frozen and ...

  7. Graduate Exit Seminar- Danielle Bush

    https://senr.osu.edu/events/graduate-exit-seminar-danielle-bush-0

    Kottman Hall 245 or  via Zoom. Danielle will present, "Possible connections between urban soil health ... Relationships between community wellbeing and soil health may be important for overall community improvement but ... are unclear. Increasing our knowledge of past impacts on and the range of urban soil properties and ...

  8. Money To Grow

    https://southcenters.osu.edu/direct-marketing/money-grow

    Roots, Fruits, and Shoots, LLC. SARE- Project The Costs and Benefits of Winter High Tunnel Supplemental ...

  9. Ohio CCA Pre-Exam Preparation Class

    https://agcrops.osu.edu/events/ohio-cca-pre-exam-preparation-class

    test by covering basic principles in the four competency areas – nutrient management, soil and water ... online tests. You must pass both exams to obtain Certified Crop Adviser status. Tests are offered four ... Physiology Variety Selection Soil & Water Management Soil Properties Soil Water Surface and Ground Water ...

  10. Grapevine Nutrient Management: Petiole Sampling and Analysis

    https://ohioline.osu.edu/factsheet/hyg-1438

    availability. However, there is a poor relationship between soil and plant nutrient levels. While a soil may be ... adequate levels of another nutrient while the soil test indicates a deficiency. This poor relationship may ... Manganese (Mn) 25–1,000 ppm 3 31–150 ppm Iron (Fe) 30–100 ppm 31–50 ppm Copper (Cu) 5–15 ppm 5–15 ppm Boron ...

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