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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. 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 ...

  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. New Hire Announcement – Welcome, Dr. Eugene Law

    https://hcs.osu.edu/news/welcome-dr-law

    finishes up his time as a Postdoctoral Researcher with the University of Delaware Department of Plant and Soil ... high-impact responsibilities & we could not be happier to bring Dr. Law on board for this exciting ...

  5. Dr. Eugene Law

    https://hcs.osu.edu/our-people/dr-eugene-law

    Dr. Eugene Law Assistant Professor- Weed Ecology 50% Research | 30% Teaching | 20% Extension ... from weeds that survive to maturity from being returned to the soil seedbank at harvest) developed in ...

  6. Dr. Florence Sessoms

    https://hcs.osu.edu/our-people/dr-florence-sessoms

    in Switzerland. It was eye opening to learn how these tiny and unseen soil organisms can have so much ... impact for plants and soil health. Later in my career, I understood we could not achieve better ... biomass. We need to have a better understanding of the soil community and take full advantage of its many ...

  7. Metro High School

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

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

  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. Dan Borrenpohl

    https://hcs.osu.edu/our-people/dan-borrenpohl

    biochar in an integrated crop-livestock system increase yield while also improving soil health? To answer ... of grazed cover crops after applying co-composted biochar, and we are collecting soil and greenhouse ... between treatments, but also to analyze treatment effects for yield as a function of greenhouse gas ...

  10. Interpreting a Soil Test Report

    https://ohioline.osu.edu/factsheet/agf-0514

    suitability to grow a chosen crop. Phosphorous and potassium soil test levels help us know if fertilizer is ... values is needed if they are not reported as ppm using a Mehlich 3 soil test. Soil test values reported ... in pounds per acre are converted to ppm by dividing pounds per acre by 2. If phosphorus soil test ...

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