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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. 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 ...

  3. 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 ...

  4. Spring 2024 Weather & Soil Conditions: Update 6

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-13/spring-2024-weather-soil-conditions-update-6

    Soil Temperatures and Moisture A warm stretch of weather, with temperatures over the last 30 days ... averaging 3-6°F above normal, have resulted in daily average near surface soil temperatures in the mid to ... upper 60s for the bulk of Ohio (Figure 1). Forecast trends should help maintain mild soil temperatures ...

  5. Spring 2024 Weather & Soil Conditions: Update 5

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-12/spring-2024-weather-soil-conditions-update-5

    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 ... (under sod or bare soil) are provided in the lower right corner of each panel. A map of all locations is ...

  6. Spring 2024 Weather & Soil Conditions: Update 4

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-11/spring-2024-weather-soil-conditions-update-4

    with high flows on all the major rivers. Soils remain saturated compared to late winter conditions ... bump soil temperatures up into the 50s to low 60s by early next week. For more complete weather records ... average highs in the upper 50s to mid 60s. Showers should exit the state on Wednesday, with high pressure ...

  7. Battle for the Belt: Season 2 Episode 4- Chilling Injury

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-11/battle-belt-season-2-episode-4-chilling-injury

    conditions using some lab experiments. We planted soybeans into field soil (starting at 20% or 60% available ... 50°F or 35°F, cut the emergence totals in half. Application of ice after planting was less damaging to ... less) compared to those planted at the normal depth of 1.5-inch when the soil was drier (20% available ...

  8. Lep Monitoring Network – Black Cutworm and True Armyworm Update # 4

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-14/lep-monitoring-network-%E2%80%93-black-cutworm-and-true-armyworm-update-4

    the statewide average for both pests; however, some counties continue to have high trap numbers. These ... ending May 12 th. Counties with high averages included Defiance (9.8), Hardin (8.7) and Van Wert (8.6) ... the next 28 – 35 days. Counties with high trap numbers should plan to scout for BCW larvae after corn ...

  9. Corn & Soybean Planting Updates: Delays and Potential Yield Impacts and Recommendations

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-14/corn-soybean-planting-updates-delays-and-potential-yield-impacts

    (Nielsen, 2022; Roekel & Coulter, 2011). Although early planting is important, planting into good soil ... recommended target population increases to 130,000 to 150,000 plants/acre. Row spacing. Regardless of planting ... and soils. Agricultural and Forest Meteorology, 247, 170-180. ...

  10. 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 ...

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