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  1. Fertility Calculator for Ohio Recommendation

    https://agcrops.osu.edu/newsletter/corn-newsletter/2020-27/fertility-calculator-ohio-recommendation

    & potassium (K) recommendations. User can select when a field the critical level used for ... Lime needed in the recommendation developed.   The spreadsheet is available at: ... https://go.osu.edu/ohiofertilitytool A printed User Guide is available at: https://go.osu.edu/ohiofertilitytoolguide A video ...

  2. Cover Crop Drive It Yourself Tour

    https://agcrops.osu.edu/events/cover-crop-drive-it-yourself-tour

    and podcasts about using cover crops, please visit the link at the end of this article. The tour is ...

  3. Corn Silage Harvest Timing

    https://agcrops.osu.edu/newsletter/corn-newsletter/2020-28/corn-silage-harvest-timing

    if you are uncertain about the DM content, it is usually better to err on chopping a little early ... used to roughly predict the proper time to chop corn silage.   How to sample fields Collect about ... kernel milk-line) for conventional tower or bunker silos. Full dent stage happens about 40 days after ...

  4. Soil PH and Lime Recommendations

    https://agcrops.osu.edu/node/3483

    Soil pH is one of the most important properties in determining the cycling and availability of ... soil nutrients. Soil testing regularly and applying lime to maintain recommended pH levels should be ... the first step growers take to assure crops have sufficient availability of nutrients. Soil pH should ...

  5. Cover Crop Driving Tour

    https://agcrops.osu.edu/newsletter/corn-newsletter/2020-28/cover-crop-driving-tour

    and podcasts about using cover crops, please visit the link at the end of this article. The tour is ...

  6. Calcium, Magnesium, and Sulfur

    https://agcrops.osu.edu/node/3477

    adequately supply these nutrients for plant growth. A standard soil test measures the relative availability ... best diagnostic tool for confirming S availability. Excessive use of K fertilizers can greatly reduce ... level. Potassium recommendations above the critical level are less than crop removal so as to discourage ...

  7. Phosphorus and Potassium

    https://agcrops.osu.edu/node/3478

    on a build-up and maintenance approach. This framework strives to build soil test levels up to and ... beyond a critical level, then maintain these levels over time. The original tri-state recommendations had ... fertilizer to build soil test levels) if soils test below the critical level or are “deficient.” The ...

  8. Soil Sampling, Handling, and Testing

    https://agcrops.osu.edu/node/3484

    strategy is always a trade-off between the collection and analysis cost and the level of detail of the ... same depth each sampling period to ensure changes in soil test levels can be reliably tracked over ... due to the effect of moisture on soil pH and nutrient levels, particularly K. Intervals Between ...

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

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

    Default soil test P and K levels now based on Mehlich-3. These recommendations are consistent with current ... soil test extracts. Details P critical level 20 ppm for corn and soybean, 30 ppm for wheat and alfalfa ... (Mehlich-3 P). This update is based on extensive field trials over past decade. Details K critical levels are ...

  10. How to Identify Late Season Soybean Diseases in 2020

    https://agcrops.osu.edu/newsletter/corn-newsletter/2020-27/how-identify-late-season-soybean-diseases-2020

    levels can reach 20% incidence before there is a measurable yield loss.  Sclerotinia will occur as single ...

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