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  1. 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 ...

  2. Interpreting a Soil Test Report

    https://ohioline.osu.edu/factsheet/AGF-514

    Soil test values may be reported in parts per million (ppm) or pounds per acre (lb/ac). To convert from ... ppm to lb/ac, multiply ppm by two. Phosphorus, potassium, calcium, and magnesium soil test values are ... 250–310 125–155 CEC=30 meq/100g 300–360 150–180 Calcium (Ca) 800–16,000 400–8,000 Levels less than 200 ppm ...

  3. 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 ...

  4. 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 ...

  5. Lime and the Home Lawn

    https://ohioline.osu.edu/factsheet/hyg-4026

    For turfgrasses used in Ohio home lawns, a soil pH between 6.0 and 7.0 (slightly acidic) is ideal. ... in an immediate and dramatic change to soil pH levels or the health of turfgrass plants. Homeowners ... or not liming is needed, and how much lime to apply, is through the results of a soil test conducted ...

  6. Ever-Evolving Aspects of Cannabis Production

    https://ohioline.osu.edu/factsheet/anr-99

    recreational status. Even though marijuana continues to be illegal at the federal level due to its high ... concentration goes beyond 0.3%. For obvious reasons, high tunnel and greenhouse operations face lower ... overall success of any cannabis production effort. Hemp programs overseen by state-level agencies also ...

  7. SENR Seminar Series- Exposure Systems and Dynamic Populations are the Realities of Health Risks and Benefits

    https://senr.osu.edu/events/senr-seminar-series-exposure-systems-and-dynamic-populations-are-realities-health-risks-and

    Mark Weir, Assistant Professor of Risk Analysis and Environmental Health Science at The Ohio State ... University will present,   Exposure Systems and Dynamic Populations are the Realities of Health Risks and ...

  8. Ammonia Emission from Animal Feeding Operations and Its Impacts

    https://ohioline.osu.edu/factsheet/AEX-723.1

    50 ppm, increased levels of keratoconjuctivitis and tracheitis have been observed. These trachea and ... causes high ammonia levels inside animal production buildings, especially in winter months when the ... concentrations. People begin to detect odors at 5–50 ppm. Irritation to mucous surfaces occurs at 100–500 ppm ...

  9. New tenure-track faculty position in Environmental and Natural Resources Education

    https://senr.osu.edu/news/new-tenure-track-faculty-position-environmental-and-natural-resources-education

    we are excited to announce a new tenure-track faculty position (Assistant or Associate level ... priorities in the School, including understanding the inter-relationships between informal settings and ...

  10. Discovering Macroinvertebrates- One ENR experience at a time

    https://senr.osu.edu/news/discovering-macroinvertebrates-one-enr-experience-time

    students how sample for and calculate an ICI, or Invertebrate Community Index. This is an index commonly ... connections between the students and agency professionals.    A toolbox of skills SENR:  What do you hope ...

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