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  1. Guidelines for Choosing a Soil Analytical Laboratory

    https://ohioline.osu.edu/factsheet/HYG-1133

    the test results will be of high quality, credible, and meaningful. In addition, any recommendations ... here to aid the grower in evaluating a soil analytical laboratory. Factors to Consider Test Me​thods ... region. This summary, entitled  Recommended Chemical Soil Test Procedures for the North Central Region, ...

  2. Herbicide Injury and the Problem of Spray Drift

    https://ohioline.osu.edu/factsheet/anr-0137

    but it has a high degree of uptake from the soil and is very persistent. Grape injury has been ... vineyard. Injury, however, may occur if the spray rate is too high when these herbicides are applied to soil ... may provide an acceptable level of weed control while minimizing the risk of severe grape injury as ...

  3. April 10, 2024- New Applicator Training- Webinar

    https://pested.osu.edu/events/april-10-2024-new-applicator-training-webinar

    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 ... 8- Turf-  The application of pesticides to lawns, turf, sod, or to soil areas being prepared for the ...

  4. 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 ...

  5. Wood Destroying Insect Inspection- March 21, 2024

    https://pested.osu.edu/events/wood-destroying-insect-inspection-march-21-2024

    study materials for core and category 12. Pass the core test and category 12 test Complete this ... mandatory course The test will be offered upon completion of the course. You may take the test before taking ... Class Adjourns & Testing Available for Core and Category 12   Recertification Credit: Applicators ...

  6. Forage Kochia (Bassia prostrata)

    https://pested.osu.edu/node/424

    Forage Kochia (Bassia prostrata) Description: Small to medium polymorphic evergreen subshrub. Part ...

  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. Water Hemp (Amaranthus tuberculatus)

    https://pested.osu.edu/node/425

    Water Hemp (Amaranthus tuberculatus)  Description: Erect plant up to 8 feet tall.  Highly variable ... Habitat: Crop fields, disturbed areas. Prefers poorly drained soils. Flower: Narrow bracts arranged in ...

  9. 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 ...

  10. 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 ...

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