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  1. Wheat Management for Fall 2021

    https://agcrops.osu.edu/newsletter/corn-newsletter/2021-30/wheat-management-fall-2021

    phosphorus than corn or soybean, and soil test levels should be maintained between 30-50 ppm (Mehlich-3 P) ... for optimum production (Table 1). Do not add any phosphorus if soil test levels are higher than 50 ... 45 60 75 >50 0 0 0 0 Soil potassium should be maintained at levels of 100-130 and 120-170 ppm ...

  2. Converting between Mehlich-3, Bray P, and Ammonium Acetate Soil Test Values

    https://ohioline.osu.edu/factsheet/anr-75

    Bray P. When only soil test values in the agronomic range were considered (less than 50 ppm Bray P), ... relationships between Mehlich-3, Bray P, and Ammonium Acetate soil test extractants in the Tri-State Region. ... 3–1170 ppm, and Mehlich-3 K values ranged from 25–899 ppm. We examined relationships with all soil test ...

  3. Grapevine Nutrient Management: Petiole Sampling and Analysis

    https://ohioline.osu.edu/factsheet/hyg-1438

    availability. However, there is a poor relationship between soil and plant nutrient levels. While a soil may be ... adequate levels of another nutrient while the soil test indicates a deficiency. This poor relationship may ... Manganese (Mn) 25–1,000 ppm 3 31–150 ppm Iron (Fe) 30–100 ppm 31–50 ppm Copper (Cu) 5–15 ppm 5–15 ppm Boron ...

  4. Tillage is Useful for Managing Tar Spot and Other Diseases

    https://agcrops.osu.edu/newsletter/corn-newsletter/2021-39/tillage-useful-managing-tar-spot-and-other-diseases

    Tillage to remove and speed-up the decomposition of crop residue will help to reduce the risk of ... given that in many fields, most of the stubble that remain after harvest came from a 2021 crop with high ... levels of disease. Unless this stubble is buried or destroyed, several of the fungi that infected the ...

  5. Summer General Global Education Information Session

    https://ansci.osu.edu/newsletter/student-newsletter/december-6th-2021/summer-general-global-education-information-session

    safety resources. They will also give a high level overview of each of their Summer 2022 programs! If you ...

  6. Interpreting a Soil Test Report

    https://ohioline.osu.edu/factsheet/AGF-514

    Soil test values may be reported in parts per million (ppm) or pounds per acre (lb/ac). To convert from ... ppm to lb/ac, multiply ppm by two. Phosphorus, potassium, calcium, and magnesium soil test values are ... 250–310 125–155 CEC=30 meq/100g 300–360 150–180 Calcium (Ca) 800–16,000 400–8,000 Levels less than 200 ppm ...

  7. Implications of High N Fertilizer Prices on Corn N Fertilizer Recommendations

    https://agcrops.osu.edu/newsletter/corn-newsletter/2021-39/implications-high-n-fertilizer-prices-corn-n-fertilizer

    ($/lb) Price/Bushel Corn $0.45 $ 0.55 $0.65 $0.75 $0.85 $0.95 $1.05 $4.50 180 169 159 150 143 136 129 ... corn (150 – 200 lbs N/acre), each additional pound returns less and less and eventually reaches a point ... yielding a high enough return to pay for itself.   Table 1. Price per Ton of Anhydrous and 28% UAN at ...

  8. Phosphorus Nutrient Management for Yield and Reduced P Loss at Edge of Field

    https://ohioline.osu.edu/factsheet/agf-509

    site and rate criteria from Assessing Nutrient Loss Risk in Ohio (NRCS) between 50 to 200 PPM. Time ... step 7. STP value of 50 PPM Mehlich III or less: CROP YIELD —Reduce risk of crop yield losses with ... available. The maintenance STP range is "critical level" to 40 PPM in corn soybean rotation and 50 ...

  9. Fall Herbicide Treatments – Just Do It – Nag Nag Nag

    https://agcrops.osu.edu/newsletter/corn-newsletter/2021-39/fall-herbicide-treatments-%E2%80%93-just-do-it-%E2%80%93-nag-nag-nag

    application): the soil temperature is above 50 F for at least 10 days between application and planting; the ... situation requiring a less aggressive burndown mixture.  So – where shortages or high prices cause ... levels that can cause injury to soybeans.  Rimsulfuron is one of the few herbicides with decent activity ...

  10. Ammonia Emission from Animal Feeding Operations and Its Impacts

    https://ohioline.osu.edu/factsheet/AEX-723.1

    50 ppm, increased levels of keratoconjuctivitis and tracheitis have been observed. These trachea and ... causes high ammonia levels inside animal production buildings, especially in winter months when the ... concentrations. People begin to detect odors at 5–50 ppm. Irritation to mucous surfaces occurs at 100–500 ppm ...

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