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  1. Converting between Mehlich-3, Bray P, and Ammonium Acetate Soil Test Values

    https://ohioline.osu.edu/factsheet/anr-75

    Bray P. When only soil test values in the agronomic range were considered (less than 50 ppm Bray P), ... relationships between Mehlich-3, Bray P, and Ammonium Acetate soil test extractants in the Tri-State Region. ... 3–1170 ppm, and Mehlich-3 K values ranged from 25–899 ppm. We examined relationships with all soil test ...

  2. Online Webinar- New Pesticide Applicator Training- October 11, 2023

    https://pested.osu.edu/events/online-webinar-new-pesticide-applicator-training-october-11-2023

    Ornamental Weed Control (Category 6c). Attendees will choose between Industrial Vegetation (Category 5) and ... Turf (Category 8). No testing is available at the conclusion of this course. Contact the ODA to ... applications. 8- Turf-  The application of pesticides to lawns, turf, sod, or to soil areas being prepared for ...

  3. Demonstration Sprayer

    https://pested.osu.edu/EducatorResources/demonstration-sprayer

    https://mediasite.osu.edu/Mediasite/Play/8d18373477484ef49a2d443eb0cf55181d Pressure comparison 8. Using a pressure gauge to test nozzle flow rate. 2:50 ... https://mediasite.osu.edu/Mediasite/Play/92552b295d074b9dbd5cae76e3455eda1d Gauge test 9. Demonstration of how high pressure contributes to spray drift. 3:12 ... https://mediasite.osu.edu/Mediasite/Play/4739ca20cfb248aa8f8596d4d543b0f11d Spray pattern 2 7. Effect of pressure on flow rate and droplet size. 5:50 ...

  4. 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 ...

  5. Developing Phosphorus and Potassium Recommendations for Field Crops

    https://ohioline.osu.edu/factsheet/AGF-515

    + (0.05 x CEC))] + (YP x CR) + 20 CL is the critical level (100 ppm at a CEC of 10), STL is the soil test ... test results are based on soil calibration studies that correlate soil test levels to crop yield ... crop (buildup stage). Once soil test values reach the critical soil test level, a maintenance approach ...

  6. 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) ...

  7. Soil Terminology and Definitions

    https://ohioline.osu.edu/factsheet/SAG-19

    of soil antecedent biological activity. A high BR generally indicates higher soil microbial activity, ... accumulation in the soil. This index can be used as an early and sensitive indicator of carbon or soil organic ... and macropores leading to soil compaction and decreased soil organic matter levels. Soil compaction ...

  8. New Pesticide Applicator Training- August 16, 2023

    https://pested.osu.edu/events/new-pesticide-applicator-training-august-16-2023

    (Category 6c). Attendees will choose between Industrial Vegetation (Category 5) and Turf (Category 8). ... Testing is available at the conclusion of the day.  A photo ID is required for the test. Program Brochure ... Applicator test. To become licensed, you must apply for your license with the Ohio Department of Agriculture. ...

  9. 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 ...

  10. Silent Spring Revolution: John F. Kennedy, Rachel Carson, Lyndon Johnson, Richard Nixon, and the Great Environmental Awakening

    https://epn.osu.edu/user-events/silent-spring-revolution-john-f-kennedy-rachel-carson-lyndon-johnson-richard-nixon-and

    (Pennsylvania) smog incident, JFK’s Limited Nuclear Test Ban Treaty, Great Lakes preservation, the Santa Barbara ...

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