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  1. Understanding How Soil Test Phosphorus Impacts Water Quality

    https://ohioline.osu.edu/factsheet/anr-0111

    Soil test P is one indicator of environmental P loss potential from a field. STP values above 100 ppm ... Tests as Risk Indicators for Leaching of Dissolved Phosphorus from Agricultural Soils in Ontario. Soil ... called eutrophication, results in depleted dissolved oxygen in water bodies. A soil test for P (STP) ...

  2. Developing Phosphorus and Potassium Recommendations for Field Crops

    https://ohioline.osu.edu/factsheet/agf-0515

    determined using field studies to correlate soil test levels to crop yield response. Ohio data was used to ... This framework strives to build soil test levels up to and beyond a critical level, and then maintain ... these levels over time. The critical level is a key component to this framework. Soil test levels above ...

  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. Ohio Phosphorus (P) Use by Crop Reporting District

    https://ohioline.osu.edu/factsheet/anr-0144

    the acreage in the Scioto River basin. Soil test P is one factor that can mitigate the amount of ... Table 2 would result in lower soil test phosphorus (STP) values over time. Evidence that this is ... levels between 1993 and 2015 (LaBarge, 2023). Future trends in STP are expected to continue to decline ...

  5. 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 ...

  6. Graduate Exit Seminar- Laura Mason

    https://senr.osu.edu/events/graduate-exit-seminar-laura-mason

    population, cropping and livestock grazing has greatly intensified, resulting in degraded soils. Local and ... biological systems are needed to maintain crop yields and soil health. A solution is the Optimized ... ha-1) and incorporates coppiced biomass to soils. Research has shown OSS shifts soil microbial ...

  7. Phosphorus Nutrient Management for Yield and Reduced P Loss at Edge of Field

    https://ohioline.osu.edu/factsheet/agf-509

    site and rate criteria from Assessing Nutrient Loss Risk in Ohio (NRCS) between 50 to 200 PPM. Time ... step 7. STP value of 50 PPM Mehlich III or less: CROP YIELD —Reduce risk of crop yield losses with ... available. The maintenance STP range is "critical level" to 40 PPM in corn soybean rotation and 50 ...

  8. Graduate Exit Seminar- MK Klenkar

    https://senr.osu.edu/events/graduate-exit-seminar-mk-klenkar

    outcompeting native plant species, and disrupting soil health. This study takes place in an invaded eastern ... including mechanical clearing and multiple levels of targeted goat browsing. Our objectives are to (i) ... decomposition rates between treatment groups and amongst litter of differing origin and nutritional ...

  9. What is your long-term care risk?

    https://farmoffice.osu.edu/news/what-your-long-term-care-risk

    Our new calculator can help farm owners estimate the risk long-term care presents to farm assets.  ...

  10. Graduate Exit Seminar- Audrey Laiveling

    https://senr.osu.edu/events/graduate-exit-seminar-audrey-laiveling

    hospital stays, increased healthcare expenditures, and greater risk of mortality. Of particular concern are ... between aquatic and riparian organisms. This study investigates the effects of (1) fish-based ecological ... riparian reaches surrounding six wastewater treatment plants discharging into medium-to-large rivers in ...

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