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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. Nutrient Management of Forage Crops Intended for Hay

    https://ohioline.osu.edu/factsheet/anr-0109

    is to maintain soil test P and K between the “critical level” (minimum) and “maintenance limit” ... level before planting. The estimated amount of P 2 O 5 required to raise a soil test 1 PPM is 20 pounds ... For example, if a soil test is 100 PPM and the goal is to increase the soil test to a critical level ...

  3. Elderberry Production in Ohio

    https://ohioline.osu.edu/factsheet/anr-0110

    Ensure ideal soil condition and fertility. Ideal nutrient conditions are a pH level of 5.5–6.5, 50 ... conditions for elderberries (pH level of 5.5–6.5, 50 lb/acre (25 ppm) of phosphorus, and 200–300 lb/acre ... lb/acre (25 ppm) of phosphorus, and 200–300 lb/acre (100–150 ppm) (Byers et al. 2012) as reported on ...

  4. 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 ...

  5. Drones for Spraying Pesticides—Opportunities and Challenges

    https://ohioline.osu.edu/factsheet/fabe-540

    likely to cause a significant level of soil compaction resulting in reduced crop yield. Spot spraying, ... spraying and the high level of public demand for relaxation of current rules and regulations. Universities, ... a number of important data points: soil characteristics (type, moisture content, and nutrient content) ...

  6. 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 ...

  7. Stone Laboratory- Small Island. Big Impact.

    https://senr.osu.edu/news/stone-laboratory-small-island-big-impact

    yourself, get outside and discover science. Ohio State's Stone Lab offers high-impact courses that give ...

  8. Monday Morning Message, January 23

    https://senr.osu.edu/email/monday-morning-message-january-23

    landscape level. I plan to invest our time and resources in helping facilitate collaborative work among ... research and extension faculty, farmers, and other key stakeholders on these topics. While a college-level ... role is a 50% FTE role funded by the college, I will need to reduce my SENR role by half.  I will stay ...

  9. Study advances understanding of conservation grazing in oak-hickory forests 

    https://senr.osu.edu/news/study-advances-understanding-conservation-grazing-oak-hickory-forests%C2%A0

    orbiculatus) in oak-hickory forests when high browsing pressure is implemented, although, goats may initially ...

  10. Quality Assurance Test-Out

    https://butler.osu.edu/events/quality-assurance-test-out-6

    ...

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