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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. 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 ...

  5. 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 ... from Recent Storms Determine N in the soil: Pre-Sidedress Nitrogen test (PSNT) can be done to quantify ... N would be needed in this article: Estimated and Soil Test Methods to Determine Supplemental N need after ...

  6. Soil Sampling

    https://extension.osu.edu/node/4487

    Learn More soil testing Gardens, lawns, and agricultural fields all benefit from soil testing ...

  7. Spring 2024 Weather & Soil Conditions: Update 2

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-09/spring-2024-weather-soil-conditions-update-2

    Figure 1: Daily average air temperature (dashed red), two-inch (green) and four-inch (blue) soil ... temperatures for spring 2024. Soil type and location of measurements (under sod or bare soil) are provided in ... located throughout the state. Daily average soil temperatures remained steady or fell slightly for most ...

  8. Capstone students contribute to space research

    https://fabe.osu.edu/news/capstone-students-contribute-space-research

    guided the project members to reduce biofilm growth by testing a variety of materials with antimicrobial ... Pathology to revise their testing methods, leading to the design and 3D printing of an apparatus to test how ... oxygen sensors need to be developed and tested thoroughly to ensure that astronauts are eating healthy, ...

  9. Spring 2024 Weather & Soil Conditions: Update 1

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-08/spring-2024-weather-soil-conditions-update-1

    to mid 50s for daily averages (Figure 1). Soil temperatures should remain steady early this week, ... Soil Temperatures and Moisture   Figure 1: Daily average air temperature (dashed red), two-inch ... (green) and four-inch (blue) soil temperatures for spring 2024. Soil type and location of measurements ...

  10. Forage Weeds: Fall Forgotten and Spring Startups

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-09/forage-weeds-fall-forgotten-and-spring-startups

    category, and the spring weed control plan can look very different between species and operations. The ... problem weeds and whether control is necessary are going to be different between permanent pasture systems ... and alfalfa fields, and highly dependent on the consequences of specific weeds. In established ...

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