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  1. 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 ...

  2. Ripe Rot of Grape

    https://ohioline.osu.edu/factsheet/plpath-fru-0052

    rot (see PLPATH-FRU-50 Sour Rot Disorder of Grape). Rain spreads spores to other berries and clusters. ... Neptune, Sauvignon blanc, Seyval Highly susceptible Cabernet Franc, Cabernet Sauvignon, Carlos, Flame ... conditions favor disease development close to harvest (i.e., warm, wet, high humidity), additional fungicide ...

  3. 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, ... increasing interest in drone spraying and the high level of public demand for relaxation of current rules and ... data points: soil characteristics (type, moisture content, and nutrient content) location of drainage ...

  4. 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, ...

  5. Raw Oat Safety

    https://ohioline.osu.edu/factsheet/fcs-1006

    with minimal risk to the consumer. Steel cut oats and oat groats are not subject to the additional heat ... diet: a persistent risk for celiac patients References Food Network. (2021). What Are Rolled Oats? ...

  6. 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 ...

  7. 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 ...

  8. 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 ...

  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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