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  1. P & K Fertility Decision with Tight Margins

    https://agcrops.osu.edu/newsletter/corn-newsletter/corn-newsletter-2024-35/p-k-fertility-decision-tight-margins

    were above 20 ppm P (Rakkar and LaBarge, 2024). When P is not applied, how much a soil test P level ... K fertilizer in 95-98% of trials when soil test K was above 130 ppm, indicating a low risk of yield penalty. ... yield increases were about 4%. It is when soil K levels were below 100 ppm that about 40-50% of trials ...

  2. Forage Nitrate Toxicity a Major Concern as Drought Worsens

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-29/forage-nitrate-toxicity-major-concern-drought-worsens

    drought-stressed corn can be at risk of high nitrate levels the greatest risk is in corn that was not ... conditions can cause unforeseen challenges with forages. We have had multiple reports of high nitrate levels ... the results. Table 1: Interpretation of nitrate forage test results. ppm NO 3 (DM) Percent NO 3 ppm NO ...

  3. Celebrate National Nematode Day and Collect a Soil Sample for SCN Testing

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-34/celebrate-national-nematode-day-and-collect-soil-sample-scn

    soil testing this autumn. Free SCN Soil Testing With funding from the Ohio Soybean Council and in ... pH, and the SCN female index on PI88788. This calculator underscores the critical need for autumn soil ... testing. As the season progresses, we encourage growers to take soil samples for SCN analysis. Wishing you ...

  4. 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 ...

  5. Risk of Corn Grain Contamination with Vomitoxin in Ohio in 2024: Projection for the Weeks of July 21 and 29

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-24/risk-corn-grain-contamination-vomitoxin-ohio-2024-projection

    growth stage between July 21 and August 4 are at high risk of being contaminated with at least 1 ppm ... As more data are collected, models will be developed to predict the risk of higher levels of ... contamination (2 ppm, 5 ppm, etc etc). More information on vomitoxin risk assessment and management in corn can ...

  6. Potassium Uptake and Ohio Crop Response

    https://ohioline.osu.edu/factsheet/anr-0147

    a measure of the risk of yield loss at a given soil-test K level without fertilizer applied during the ... total K content of Ohio soils is between 12,500 ppm and 30,500 ppm (Ames & Gaither, 1913). Even ... yield. For loams and clays, this would be 170 ppm; for sandy soils, it is 130 ppm. The range of soil test ...

  7. Cover Crop Considerations in the Dry Ohio Conditions

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-33/cover-crop-considerations-dry-ohio-conditions

    cover crop residue can serve as a protective barrier between soil and the elements. Cover crops can ... species in Ohio and across the Midwest. It is among the most drought-hardy and generates high levels of ... increase the risk of herbicide persistence in the soil, especially in dry conditions. Doing a bioassay ...

  8. Risk of Corn Grain Contamination with Vomitoxin in Ohio in 2024: A July 15th Projection

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-23/risk-corn-grain-contamination-vomitoxin-ohio-2024-july-15th

    stage between July 13 and July 19 are at high risk of being contaminated with at least 1 ppm DON. ... is to scout fields that pollinate during high-risk times for GER and plan to harvest those fields ... As more data are collected, models will be developed to predict the risk of higher levels of ...

  9. Fall Forage Management

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-26/fall-forage-management

    K 2 O. The recommended soil test ranges for phosphorus and potassium are 30 to 50 ppm and 120 to 170 ppm ... a high level of precision between sampling years so that you can accurately track your progress. Whether ... growth in the spring. We have to begin any soil discussion with a reminder to soil test. As you implement ...

  10. New Applicator Training- Online Webinar- April 16, 2025

    https://pested.osu.edu/events/new-applicator-training-online-webinar-april-16-2025

    Ornamental Weed Control (Category 6c). Attendees will choose between Industrial Vegetation (Category 5) and ... Turf (Category 8). No testing is available at the conclusion of this course. Contact the ODA to ... lawns, turf, sod, or to soil areas being prepared for the production of turf for the control of pests ...

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