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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. 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 ...

  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. Soil Phosphorus and Crop Response to Phosphorus Fertilizer in Ohio

    https://ohioline.osu.edu/factsheet/anr-0146

    responding to applied P can best be predicted by soil-test P levels. Recently, Culman et al. (2023) published ... 29.9% of trials, soybean in 14.2% of trials, and wheat in 36.8% trials. Critical soil test levels ranged ... Furthermore, the risk of yield loss with no P application decreased as the soil P level increased. As per the ...

  6. Forage Testing for Beef Cattle

    https://ohioline.osu.edu/factsheet/anr-0149

    0.12% Mg. High soil potassium levels are associated with increased incidence of grass tetany. The ratio ... (ppm). If the forage contains a high level of molybdenum (2 ppm) or sulfur at 0.25%, Cu could be ... samples are low in Zn. The recommended levels for zinc are between 30 and 1,000 parts per million (ppm ...

  7. Topdressing Wheat with Liquid Manure

    https://agcrops.osu.edu/newsletter/corn-newsletter/2024-06/topdressing-wheat-liquid-manure

    know the manure’s nitrogen content. Most manure tests reveal total nitrogen, ammonia nitrogen and ... between 30 and 40 pounds of ammonia nitrogen per 1,000 gallons. Finishing buildings with bowl waters and ... drag hoses when topdressing wheat. The concern with manure tankers is soil compaction, especially on ...

  8. You can support the creation of a new 4-H project book!

    https://ohio4h.org/march-2024/you-can-support-creation-new-4-h-project-book

    purchase at a fraction of the cost required to create the book. Donations will also fund pilot testing of ... materials with Ohio youth to ensure that they meet the high standards set by 4-H. This next foray into ... easily adapted for use in classrooms or groups. The impact of weather and climate at the local level ...

  9. Corn Response to Long-Term Weather Stressors

    https://ohioline.osu.edu/factsheet/anr-0150

    early, it calculates the time needed for the soil to warm so crop planting can proceed with a lower risk ... these challenges through management decisions. Drought and High Temperatures An increased frequency of ... continue to increase, leading to variable soil moisture across the midwestern United States (Crimmins et ...

  10. Opportunities for Sub-surface Nutrient Placement in Ohio

    https://ohioline.osu.edu/factsheet/fabe-56401

    horsepower requirements, the level of tillage and soil disruption, depth of fertilizer placement, and ... while leaving the soil between these strips undisturbed. When the strip-till unit is equipped with ... leaving residue on the soil surface between the strips. Quicker spring soil warm-up compared to no-till ...

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