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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. John Yost Joins Our Team and Toxic Levels of Hay Nitrates

    https://wayne.osu.edu/news/john-yost-joins-our-team-and-toxic-levels-hay-nitrates

    feed, and levels between 1000 and 2100 ppm should be safe for non-pregnant livestock.  Nitrate levels of ... indicate that nitrate levels in some stands, are approaching a range of 1700 ppm which is acutely toxic to ... flash graze pastures to keep the animals from grazing too close to the soil level and delaying harvest ...

  3. 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 ...

  4. 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 ...

  5. Keep Forage Nitrate Toxicity in Mind This Year

    https://dairy.osu.edu/newsletter/buckeye-dairy-news/volume-25-issue-5/keep-forage-nitrate-toxicity-mind-year

    away. We have had multiple reports of high nitrate levels this year. The first reports of high nitrate ... reports of dangerously high nitrate levels in millet hay with the recently dry weather.  Producers have ... the results. Table 1: Interpretation of nitrate forage test results. ppm NO 3 (DM) Percent NO 3 ppm NO ...

  6. 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 ...

  7. 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 ...

  8. 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 ...

  9. 2023 Livestock Judging Team finishes season at North American International Livestock Exposition

    https://ansci.osu.edu/news/2023-livestock-judging-team-finishes-season-north-american-international-livestock-exposition

    NAILE as the 13th High Team in the senior college competition. Other notable finishes for the team from ... the fall include 2nd High Team overall (1st in placings, 2nd in reasons) at the Purdue Boilermaker ... Classic, 3rd High Team (High Team in swine) at the Keystone International Livestock Exposition, and 12th ...

  10. Post-Harvest Sanitation Steps To Help Prevent Diseases, Insects From Overwintering

    https://wayne.osu.edu/news/post-harvest-sanitation-steps-help-prevent-diseases-insects-overwintering

    of production, there is always a risk of over wintering diseases and insects on alternative host ... plants or in crop residue post-harvest. Realizing where these risks exist, and the challenges associated ... with allowing insects and diseases to over winter, can help you make decisions to mitigate such risks ...

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