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  1. Crop Response to Potassium Fertilizer in Ohio

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-04/crop-response-potassium-fertilizer-ohio

    of yield penalty with no K application decreases as soil K levels go above 100 ppm. If the soil test ... (2023) classified Mehlich-3 soil K levels into <70, 70-100, 100-130, 130-160, and >160 ppm to ... yield, the higher the yield increase from K fertilizer.   Generally, as the soil test K levels decreased, ...

  2. Spring Forage Establishment

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-08/spring-forage-establishment

    Recommendations (https://forages.osu.edu/forage-management/soil-fertility-forages). Phosphorus levels for grass ... are optimal in the 20-40 ppm range, while the range for legumes is 30-50 ppm. When it comes to ... potassium the optimal range is 100-130 ppm for sandy soils with a CEC less than 5, for loam and clay soils ...

  3. Crop Response to Phosphorus Fertilizer in Ohio

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-03/crop-response-phosphorus-fertilizer-ohio

    soil P levels go above 20 ppm. If the soil test P level is less than 20 ppm, there is an increased risk ... less than 10 ppm, the median relative yield was 87%. As the soil test P level increased above the ... the Mehlich-3 soil test P level. The Mehlich-3 soil P measures the readily available soil P for crop ...

  4. Look Out for Nitrogen Loss Due to Heavy Rains

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-09/look-out-nitrogen-loss-due-heavy-rains

    N fertilizer was applied recently in such fields, especially without incorporation into the soil, there is high ... in Corn from Recent Storms Determine N in the soil: Pre-Sidedress Nitrogen test (PSNT) can be done to ... N would be needed in this article: Estimated and Soil Test Methods to Determine Supplemental N need after ...

  5. Spring 2024 Weather & Soil Conditions: Update 3

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-10/spring-2024-weather-soil-conditions-update-3

    50s and 60s on Thursday and Friday. High pressure will slowly take control over the weekend into early ... Soil Temperatures and Moisture Daily average soil temperatures jumped 5-10°F this week due to ... warmer conditions, randing from the low 50s in Ashtabula to as warm as 57°F at Western in Clark County ...

  6. FRST Fertilizer Recommendation Support Tool Launches Nationwide to Digitize Crop Nutrient Management

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-10/frst-fertilizer-recommendation-support-tool-launches-nationwide

    Recommendation Support Tool), a decision-aid that provides an unbiased, science-based interpretation of soil test ... harmonize soil testing across state boundaries. It represents an improvement in our ability to evaluate soil ... test correlation.” The new web-based tool represents a significant advancement in soil testing for ...

  7. OSU Deoxynivalenol, DON, Resistance Screening Program-2024

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-06/osu-deoxynivalenol-don-resistance-screening-program-2024

    and consistently lower DON levels are easier to keep low than those that were highly susceptible. ... temperatures between 59 ° F and 86 ° F.   Table 1 below summarizes the DON ppm as an average across locations ... lowest average DON level. The variability among some of the hybrids with high DON levels led to high ...

  8. Wheat Management for Spring 2024

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-10/wheat-management-spring-2024

    prior to or during Feekes 5.0 with 2,4-D and other labeled herbicides. This is also a good stage to ... visible above the soil surface and is commonly referred to as ‘jointing.’ Above this node is the head or ... https://www.youtube.com/watch?v=D_f3VrqzV5c&list=PLYlh_BdeqniJ8oD8TnyGhQHRd96ptV0Yt&index=1 Most herbicide applications should be made by the time wheat enters the Feekes 6 growth stage. ...

  9. Alfalfa Weevil Activity is Beginning to Peak

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-10/alfalfa-weevil-activity-beginning-peak

    days (GDD) and reaches their peak feeding and damage when heat units for the area are between 325 and ... 1 Recheck in a week 9 50 >1 Spray 12 75 >2 Spray 16 100 >4 Harvest early   If alfalfa weevil ... pressure is high in a stand that is still short a pesticide treatment may be warranted. Consult the OSU and ...

  10. Key To Alfalfa Growth Is Weed Control; Start Sooner Rather Than Later

    https://wayne.osu.edu/news/key-alfalfa-growth-weed-control-start-sooner-rather-later

    Generations ago, Alfalfa was given the nickname “Queen of Forages”, because of its high quality ... soil nutrient resources, especially in the summer months.  Not only will they thin the stand, but they ... can reduce the quality of the harvested forage.  While some weeds can actually contribute high protein ...

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