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  1. Understanding How Soil Test Phosphorus Impacts Water Quality

    https://ohioline.osu.edu/factsheet/anr-0111

    Soil test P is one indicator of environmental P loss potential from a field. STP values above 100 ppm ... Tests as Risk Indicators for Leaching of Dissolved Phosphorus from Agricultural Soils in Ontario. Soil ... called eutrophication, results in depleted dissolved oxygen in water bodies. A soil test for P (STP) ...

  2. Fertilization

    https://agcrops.osu.edu/node/4389

    before planting when the soil-test level is below 50 ppm. Recommendations are determined by yield goal ... Levels―Both Grain and Straw Removed.  Yield Potential Soil CEC Soil-Test K (ppm)             (bu/ac)     25 50 ... Yield Potentials and Soil-Test Levels Yield Potential (bu/ac) Soil-Test P (Bray) in ppm   15 20 25-40  ...

  3. Fertility Recommendations

    https://agcrops.osu.edu/node/4423

    surface residues are high. Soils that have moderate to high levels of soil test phosphorus and potassium ... current soil test levels. Considering it takes between 8 to 20 pounds of P2O5 and 5 to 10 pounds of K2O ... benefit of starter fertilizers increases when soil test levels and soil temperatures are low and when soil ...

  4. Production of Other Small Grain Species

    https://agcrops.osu.edu/node/4396

    45 60 Soil Test Value  Annual Recommendation       (lb P2O5/ac)  lb P/ac  ppm        30 15 80 95 115 ... Oats  100 130 160 Rye  30 45 60     CEC CEC CEC Soil Test Value  10 20 30 10 20 30 10 20 30 lb K/ac ppm ... Annual Recommendation (lb K2O/ac) 50 25 150 190 230 160 195 240 165 255 300 150 75 75 140 225 85 145 235 ...

  5. Plan Now For Frost Seeding Renovation

    https://wayne.osu.edu/news/plan-now-frost-seeding-renovation-0

    fertility are important.  A soil pH of 6.5 is desirable for legume plants.  Critical or base level soil test ... hay field. It involves broadcasting seed on to the soil surface and letting natural freeze/thaw cycles ... work to increase seed to soil contact.  Fields roughed up by livestock grazing and/or are overgrazed ...

  6. 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 ...

  7. Fertilization Recommendations

    https://agcrops.osu.edu/node/4348

    maintain soil-test potassium levels for optimum soy- bean production is between 100 and 180 ppm. Potash ... Calcium (Ca) and Magnesium (Mg)  Soybeans require a minimum exchangeable soil test level of 200 and 50 ppm ... Recommendations for Soybeans.    Yield Potential (bu/ac)          Soil test (Bray P)  30 40 50 60 70 ppm (lb/ac)  ...

  8. Elderberry Production in Ohio

    https://ohioline.osu.edu/factsheet/anr-0110

    Ensure ideal soil condition and fertility. Ideal nutrient conditions are a pH level of 5.5–6.5, 50 ... conditions for elderberries (pH level of 5.5–6.5, 50 lb/acre (25 ppm) of phosphorus, and 200–300 lb/acre ... lb/acre (25 ppm) of phosphorus, and 200–300 lb/acre (100–150 ppm) (Byers et al. 2012) as reported on ...

  9. 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 ...

  10. Sampling Corn Grain for Vomitoxin

    https://agcrops.osu.edu/newsletter/corn-newsletter/2023-03/sampling-corn-grain-vomitoxin

    Moldy grain and vomitoxin levels vary considerably within the grain lot. This is largely because ... produces vomitoxin in the grain, and number of infected kernels on a given ear within a field are highly ... vastly different levels of internal fungal colonization, and consequently, different levels of vomitoxin ...

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