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  1. Plan Now for Fall Fertilization of Perennial Forages

    https://agcrops.osu.edu/newsletter/corn-newsletter/2022-26/plan-now-fall-fertilization-perennial-forages

    When soil test P exceeds the agronomic level of 50 PPM, there is increased  potential of P losses into ... For example, many dairies have high levels of soil P, making the expense of fertilizer P unnecessary. ... https://forages.osu.edu/forage-management/soil-fertility-forages. We highly recommend using this tool to check any fertilizer recommendations you receive, as we ...

  2. Phosphorus Nutrient Management for Yield and Reduced P Loss at Edge of Field

    https://ohioline.osu.edu/factsheet/agf-509

    site and rate criteria from Assessing Nutrient Loss Risk in Ohio (NRCS) between 50 to 200 PPM. Time ... step 7. STP value of 50 PPM Mehlich III or less: CROP YIELD —Reduce risk of crop yield losses with ... available. The maintenance STP range is "critical level" to 40 PPM in corn soybean rotation and 50 ...

  3. Corn Silage and Foliar Disease

    https://dairy.osu.edu/newsletter/buckeye-dairy-news/volume-24-issue-4/corn-silage-and-foliar-disease

    contamination of corn silage and high moisture corn with many nutritionists encouraging levels below 1 ppm in ... with DON levels as high as 17.9 ppm in one hybrid and 30.3 ppm in the other hybrid. Again, fungicide ... by at least 50%. The trial was then expanded the second year, which was a high disease pressure year ...

  4. Interpreting a Soil Test Report

    https://ohioline.osu.edu/factsheet/agf-0514

    are rare in Ohio. Magnesium (Mg) 50–1,000 100–2,000 Levels less than 20 ppm are a concern. Dolomitic ... suitability to grow a chosen crop. Phosphorous and potassium soil test levels help us know if fertilizer is ... desired range. Calcium (Ca) 200–8,000 400–16,000 Levels less than 200 ppm are a concern. Ca deficiencies ...

  5. Fertilizing Perennial Forages on Dairy Farms

    https://dairy.osu.edu/newsletter/buckeye-dairy-news/volume-24-issue-4/fertilizing-perennial-forages-dairy-farms

    Many dairy farms have high levels of soil P, making the expense of fertilizer P unnecessary. When soil ... test P exceeds the agronomic level of 50 ppm, there is increased  potential of P losses into streams ... https://forages.osu.edu/forage-management/soil-fertility-forages. We highly recommend using this tool to check any fertilizer recommendations you receive, as we ...

  6. Seeding Perennial Forages in Late Summer

    https://agcrops.osu.edu/newsletter/corn-newsletter/2022-24/seeding-perennial-forages-late-summer

    phosphorus level for forage legumes is 30 to 50 ppm Mehlich-3 and for grasses 20 to 30 ppm Mehlich-3. The ... optimal soil potassium level is 120 to 170 ppm for most of our soils.   Check herbicide history of field. ... contact. Be aware that too much tillage depletes soil moisture and increases the risk of soil crusting. ...

  7. Seeding Perennial Forages in Late Summer

    https://dairy.osu.edu/newsletter/buckeye-dairy-news/volume-24-issue-4/seeding-perennial-forages-late-summer

    30 to 50 ppm Mehlich-3 and for grasses 20 to 30 ppm Mehlich-3. The optimal soil potassium level is ... much tillage depletes soil moisture and increases the risk of soil crusting. Follow the "footprint ... and clovers should have a pH of 6.0 or above. The optimal soil phosphorus level for forage legumes is ...

  8. Developing Phosphorus and Potassium Recommendations for Field Crops

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

    a soil with a CEC of 10 ppm, the critical level is 100 ppm and the maintenance limit is 130 ppm. Table 1. ... + (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 ...

  9. Estimated and Soil Test Methods to Determine Supplemental N need after Flooding

    https://brown.osu.edu/news/estimated-and-soil-test-methods-determine-supplemental-n-need-after-flooding

    than 10 pounds of N for every 2 ppm reduction in soil sample N below the expected levels listed in ... soil temperatures between 55 to 65 degrees Fahrenheit, approximately 2 to 3% of soil nitrate is lost ... soil reaches anaerobic conditions)] of the 150 lbs N/acre was denitrified or lost (approximately 30 lbs ...

  10. All Puckered Up: Dicamba Drift Reminders

    https://agcrops.osu.edu/newsletter/corn-newsletter/2022-25/all-puckered-dicamba-drift-reminders

    a long half-life in the soil and risk of injury is increased in years with low rainfall. Typical PGR ... chemical makeup and high vapor pressure. Formulation greatly affects the volatility of 2,4-D. Higher ... plant stunting. Soybean tolerance to sublethal rates of these herbicides varies between the different ...

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