Site

Search results

  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. 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 ...

  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. 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. Fall Color Change in Ohio

    https://ohioline.osu.edu/factsheet/anr-0145

    typically peak between mid- to late October. This fact sheet explains the processes that cause fall ... marcescent. The leaves remain on the trees due to the abscission layer not completely forming between the leaf ... the production of carotenoid pigments within the leaves. Soil moisture also plays a part in fall ...

  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. Molds and Mycotoxins in Dairy Cattle: Effects, Diagnosis, and Control

    https://dairy.osu.edu/newsletter/buckeye-dairy-news/volume-25-issue-6/molds-and-mycotoxins-dairy-cattle-effects-diagnosis

    provides an overview of health effects, laboratory diagnosis, interpretation of results with risk levels ...

  10. National Dairy FARM Program to Release Animal Care Version 5

    https://dairy.osu.edu/newsletter/buckeye-dairy-news/volume-25-issue-6/national-dairy-farm-program-release-animal-care

    farmers are committed to producing high quality, safe milk with integrity. The National Dairy FARM Program ... process between FARM & co-op/processor for farms that exceed animal observation benchmarks ...

Pages