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  1. 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 ...

  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. Nutrient Management Field Day

    https://agcrops.osu.edu/events/nutrient-management-field-day

    Water Quality Team Report – Amber Herman, Water Quality Extension Associate Soil Biology Testing Options ... – Russ Rice & Alan Sundermeier, CAP Coordinators Meal included: Loaded Lunchbox food truck. Soil and ...

  4. Fertility Management of Meadows

    https://ohioline.osu.edu/factsheet/anr-5

    nutrition, forage test to check for adequate levels. When the soil pH is below 5.0, aluminum availability ... critical soil test level of 15-25 parts per million (ppm) phosphorus for Bray P1 test results or 28-40 ppm ... leaching. The critical soil test levels for potassium are 125-200 ppm. Plants have the ability to take up ...

  5. Forage Testing for Beef Cattle

    https://ohioline.osu.edu/factsheet/anr-0149

    0.12% Mg. High soil potassium levels are associated with increased incidence of grass tetany. The ratio ... (ppm). If the forage contains a high level of molybdenum (2 ppm) or sulfur at 0.25%, Cu could be ... samples are low in Zn. The recommended levels for zinc are between 30 and 1,000 parts per million (ppm ...

  6. Effects of Lime and Gypsum Application on Vegetable Yields and Nutrient Availability in Muck Soil

    https://ohioline.osu.edu/factsheet/anr-0102

    to keep organic soils at a target pH of 5.3 to minimize the risk of micronutrient deficiencies ... state that the optimal pH range of muck soils should be between 5.3 and 5.8, depending on the crop ... The application of lime had no effect on soil test phosphorus (P) or potassium (K) values, but the ...

  7. Register for Soil Health Field Day on August 15

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-23/register-soil-health-field-day-august-15

    RegenConnect ®  on Thursday, August 15 for a Soil Health Field Day featuring leading experts and hands-on field ... Rain Fall Simulator and Slake Test- Jay & Ann Brandt Cover Crop Selection Decisions & Planting ... discussion and additional time to interact with vendors. Register online by clicking here. Soil and Water ...

  8. Hot Water and Chlorine Treatments to Eradicate Bacterial Plant Pathogens from Vegetable Seeds

    https://ohioline.osu.edu/factsheet/hyg-5818

    F (50 C), or the temperature indicated for the seed type being tested (see Table 1). Place container in ... may be damaged by hot water. It is highly recommended that a small sample of each seed lot be treated ... and tested for germination (see below) prior to treating the entire lot. Chlorine treatment is easier ...

  9. Nutrient Value of Wheat Straw

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-21/nutrient-value-wheat-straw

    lower soil K levels. If straw is removed after heavy rainfall, some of the K may have leached out of the ... straw, lowering the nutrient value. However, a soil test should be done to accurately estimate nutrient ... scenarios are also available for profitability comparisons. Although N adds value, we do not give it an ...

  10. Crop Response to Potassium Fertilizer in Ohio

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-04/crop-response-potassium-fertilizer-ohio

    of yield penalty with no K application decreases as soil K levels go above 100 ppm. If the soil test ... (2023) classified Mehlich-3 soil K levels into <70, 70-100, 100-130, 130-160, and >160 ppm to ... yield, the higher the yield increase from K fertilizer.   Generally, as the soil test K levels decreased, ...

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