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  1. Ohio Long-Term Phosphorus and Potassium Fertilizer Trials: Grain Yields

    https://agcrops.osu.edu/newsletter/corn-newsletter/2015-20/ohio-long-term-phosphorus-and-potassium-fertilizer-trials-grain

    the study in 2006, soil test phosphorus levels were within or above the maintenance range (15–30 ppm ... Likewise in 2006, soil test potassium levels were within or above the maintenance range (100–155 ppm ... for soil test phosphorus and potassium values are still relevant at these three sites, although some ...

  2. Understanding and Overcoming Cover Crop Yield Penalties in the Maumee River Watershed: Unlocking the Potential

    https://agcrops.osu.edu/newsletter/corn-newsletter/2023-40/understanding-and-overcoming-cover-crop-yield-penalties-maumee

    start in 2024 and continue through 2025. Field measurements will include soil samples, gas emissions, ... influencing cover crop biomass production, variability, and their impact on soil health and nutrient cycling. ... Cover crops can enhance soil fertility, improve soil health, and reduce greenhouse gas emissions (learn ...

  3. Tri-State Fertilizer Recommendations for Corn, Soybean, Wheat, and Alfalfa

    https://extensionpubs.osu.edu/tri-state-fertilizer-recommendations-for-corn-soybean-wheat-and-alfalfa/

    pests and diseases, and the emergence of precision soil sampling and fertilizer rate and placement ...

  4. Tri-State Fertilizer Recommendations for Corn, Soybean, Wheat, and Alfalfa (PDF)

    https://extensionpubs.osu.edu/tri-state-fertilizer-recommendations-for-corn-soybean-wheat-and-alfalfa-pdf/

    pests and diseases, and the emergence of precision soil sampling and fertilizer rate and placement ...

  5. 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. ...

  6. Options for Short Season Summer Fall Forages

    https://agcrops.osu.edu/newsletter/corn-newsletter/2023-23/options-short-season-summer-fall-forages

    NDF in the mid-50s.  Next year, the crop will head out quickly at each harvest, and will be a medium ... Short-season forages planted in late summer can be sources of highly digestible fiber in ruminant ... silage or Baleage are possible if planted in late July to early August. Harvesting between late boot, or ...

  7. Introductory HACCP

    https://foodindustries.osu.edu/events/introductory-haccp-4

    Cancellations must be received before August 28 to receive a partial refund. There is a $50 cancellation fee. No ... Individuals who test positive or experience symptoms of COVID-19 cannot attend the course and will be provided ...

  8. BEST MANAGEMENT PRACTICES TO KEEP PHOSPHORUS ON THE FIELD

    https://agcrops.osu.edu/newsletter/corn-newsletter/2014-28/best-management-practices-keep-phosphorus-field

    Where soil test levels are above 40 ppm Bray P1 or 58 ppm Mehlich III-ICP, do not apply additional ... phosphorus in the corn-soybean rotation. These soil test levels require no additional fertilizer, according ... to the Tri-State Fertilizer recommendations. Fertilizing soils testing above these levels increases ...

  9. Harvest Delays- Light vs. Temperature

    https://agcrops.osu.edu/newsletter/corn-newsletter/2023-39/harvest-delays-light-vs-temperature

    days and below average rainfall. Light availability approached normal levels throughout June and July ...   Figure 2. Daily light integral (left) and accumulated growing degree days, base 50 °F (right), and the ... Volcanic emissions circled around the globe high in the atmosphere throughout the tropical and sub-tropical ...

  10. Quick Reference Guide to Tri-State Fertilizer Recommendation Changes

    https://agcrops.osu.edu/node/3488

    soil test extracts. Details P critical level 20 ppm for corn and soybean, 30 ppm for wheat and alfalfa ... Default soil test P and K levels now based on Mehlich-3. These recommendations are consistent with current ... 100 ppm for sandy soils, 120 ppm silt and clay soils (Mehlich-3 K, all crops). This update is based on ...

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