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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. 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 ...

  3. 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 ...

  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. Metro High School

    https://fabe.osu.edu/node/10827

    Encore House Aimee Moore kw Wednesday, March 20, 2024 (All day) ...

  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. Calendar of events

    https://ohio4h.org/january-2024/calendar-events

    include a 50/50 raffle and card games and refreshments will be available. All donations will benefit the ... for its third annual reverse raffle. Tickets are $50 and a meal and drinks are included. Guests must ... players in the club level of Huntington Stadium after the conclusion of the game. Tickets are $17 each and ...

  8. 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 ...

  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. Fertility Recommendations

    https://agcrops.osu.edu/node/4423

    surface residues are high. Soils that have moderate to high levels of soil test phosphorus and potassium ... current soil test levels. Considering it takes between 8 to 20 pounds of P2O5 and 5 to 10 pounds of K2O ... benefit of starter fertilizers increases when soil test levels and soil temperatures are low and when soil ...

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